Abroma apicalis
 - Abroma apicalis Ollenbach, 1929 [ACCEPTED SPECIES 9854:8M3K nidx=null]
 + Abroma apicalis Ollenbach, 1928 [ACCEPTED SPECIES 9857:9WSMY nidx=null]
Acanthochites avicula
 - Acanthochites avicula P. P. Carpenter, 1857 [SYNONYM SPECIES 9854:64CDJ nidx=null parent=64DSD]
 + Acanthochites avicula P. P. Carpenter, 1864 [SYNONYM SPECIES 9857:9WMJH nidx=null parent=9WMJJ]
Acanthochitona avicula
 - Acanthochitona avicula (P. P. Carpenter, 1857) [ACCEPTED SPECIES 9854:64DSD nidx=null]
 + Acanthochitona avicula (P. P. Carpenter, 1864) [ACCEPTED SPECIES 9857:9WMJJ nidx=null]
Acanthochondria salmonea
 - Acanthochondria salmonea (Lamarck, 1818) [SYNONYM SPECIES 9854:7Q9Z8 nidx=null parent=6XD8S]
 + Acanthochondria salmonea (Lamarck, 1818) [SYNONYM SPECIES 9857:64DX8 nidx=null parent=6XD8S]
Achtheres ambloplitis
 - Achtheres ambloplitis Kellicott, 1880 [ACCEPTED SPECIES 9854:993M nidx=null]
 + Achtheres ambloplitis Kellicott, 1882 [ACCEPTED SPECIES 9857:9WMP7 nidx=null]
Achtheres corpulentus
 - Achtheres corpulentus Kellicott, 1880 [SYNONYM SPECIES 9854:993Q nidx=null parent=6XD8M]
 + Achtheres corpulentus Kellicott, 1882 [SYNONYM SPECIES 9857:9WMP8 nidx=null parent=9WQL6]
Acyrthosiphon calvulum
 - Acyrthosiphon calvulum [SYNONYM SPECIES 9854:9LQ7J nidx=null parent=4XT98]
 + Acyrthosiphon calvulum [SYNONYM SPECIES 9857:9WSNV nidx=null parent=4XT98]
 + Acyrthosiphon calvulum [SYNONYM SPECIES 9857:9WSNW nidx=null parent=4XT98]
Adeniana
 - Adeniana Distant, 1905 [ACCEPTED GENUS 9854:8HC7B nidx=null]
 + Adeniana Distant, 1906 [ACCEPTED GENUS 9857:9WSBV nidx=null]
Admete
 - Admete Krøyer, 1842 [ACCEPTED GENUS 9854:7NMWK nidx=null]
 + Admete Møller, 1842 [ACCEPTED GENUS 9857:9WL4H nidx=null]
Adornellus adornus
 - Adornellus adornus Roewer, 1949 [SYNONYM SPECIES 9854:7QL63 nidx=null parent=7WXTP]
 + Adornellus adornus (Goodnight & Goodnight, 1942) [SYNONYM SPECIES 9857:9WNZ2 nidx=null parent=7WXTP]
Aega lecontii
 - Aega lecontii (Dana, 1853) [ACCEPTED SPECIES 9854:64VHK nidx=null]
 + Aega lecontii (Dana, 1854) [ACCEPTED SPECIES 9857:9WMMP nidx=null]
Aegacylla lecontii
 - Aegacylla lecontii Dana, 1853 [SYNONYM SPECIES 9854:657H6 nidx=null parent=64VHK]
 + Aegacylla lecontii Dana, 1854 [SYNONYM SPECIES 9857:9WMMR nidx=null parent=9WMMP]
Agallia balli
 - Agallia balli Baker, 1900 [SYNONYM SPECIES 9854:8JNMJ nidx=null parent=65JTT]
 + Agallia balli Baker, 1901 [SYNONYM SPECIES 9857:9WSP9 nidx=null parent=9WMNC]
Agalliopsis balli
 - Agalliopsis balli (Baker, 1900) [ACCEPTED SPECIES 9854:65JTT nidx=null]
 + Agalliopsis balli (Baker, 1901) [ACCEPTED SPECIES 9857:9WMNC nidx=null]
Agalliopsis ballii
 - Agalliopsis ballii Baker, 1900 [SYNONYM SPECIES 9854:8HTQC nidx=null parent=65JTT]
 + Agalliopsis ballii Baker, 1901 [SYNONYM SPECIES 9857:9WMND nidx=null parent=9WMNC]
Albinaria (Laconica) ithomensis
 - Albinaria (Laconica) ithomensis H. Nordsieck, 1978 [SYNONYM SPECIES 9854:BFVK nidx=null parent=BFXX]
 + Albinaria (Laconica) ithomensis H. Nordsieck, 1984 [SYNONYM SPECIES 9857:9WMQ4 nidx=null parent=BFXX]
Albinaria (Laconica) ithomensis ithomensis
 - Albinaria (Laconica) ithomensis ithomensis H. Nordsieck, 1978 [SYNONYM SUBSPECIES 9854:7TPR7 nidx=null parent=7TPSP]
 + Albinaria (Laconica) ithomensis ithomensis H. Nordsieck, 1984 [SYNONYM SUBSPECIES 9857:9WR6K nidx=null parent=7TPSP]
Alepes djedaba
 - Alepes djedaba (Forsskål, 1775) [ACCEPTED SPECIES 9854:9JR9N nidx=null]
 + Alepes djedaba (Forsskål, 1775) [ACCEPTED SPECIES 9857:9WMQ3 nidx=null]
Allocharopa brazieri
 - Allocharopa brazieri (Cox, 1868) [SYNONYM SPECIES 9854:8MTWD nidx=null parent=6F6J6]
 + Allocharopa brazieri (J. C. Cox, 1868) [SYNONYM SPECIES 9857:9WMQ5 nidx=null parent=9WNPK]
Allocharopa legrandi
 - Allocharopa legrandi (Cox, 1868) [SYNONYM SPECIES 9854:BVFJ nidx=null parent=54YS3]
 + Allocharopa legrandi (J. C. Cox, 1868) [SYNONYM SPECIES 9857:9WMQ6 nidx=null parent=9WQTF]
Amoria kingi
 - Amoria kingi (Cox, 1871) [SYNONYM SPECIES 9854:CWZT nidx=null parent=CX2W]
 + Amoria kingi (J. C. Cox, 1871) [SYNONYM SPECIES 9857:9WMQN nidx=null parent=CX2W]
Amphilepis antarctica
 - Amphilepis antarctica Koehler, 1908 [SYNONYM SPECIES 9854:D33R nidx=null parent=66G7X]
 + Amphilepis antarctica Koehler, 1907 [SYNONYM SPECIES 9857:9WKNQ nidx=null parent=66G7X]
Amphiophiura inops
 - Amphiophiura inops (Koehler, 1908) [ACCEPTED SPECIES 9854:D4HC nidx=null]
 + Amphiophiura inops (Koehler, 1907) [ACCEPTED SPECIES 9857:9WKNR nidx=null]
Amphiporus bioculatus
 - Amphiporus bioculatus sensu Corrêa, 1958 [SYNONYM SPECIES 9854:D4YS nidx=null parent=YHHV]
 + Amphiporus bioculatus [SYNONYM SPECIES 9857:9WZ9X nidx=null parent=YHHV]
Amphiura consors
 - Amphiura consors Koehler, 1908 [SYNONYM SPECIES 9854:84WNN nidx=null parent=874ML]
 + Amphiura consors Koehler, 1907 [SYNONYM SPECIES 9857:9WKNS nidx=null parent=9WKQB]
Amphiura mortenseni
 - Amphiura mortenseni Koehler, 1908 [SYNONYM SPECIES 9854:D6SY nidx=null parent=D6MB]
 + Amphiura mortenseni Koehler, 1907 [SYNONYM SPECIES 9857:9WKNT nidx=null parent=D6MB]
Ampullella
 - Ampullella Cox, 1931 [ACCEPTED GENUS 9854:8YJKL nidx=null]
 + Ampullella L. R. Cox, 1931 [ACCEPTED GENUS 9857:9WVCS nidx=null]
Ancylus smithi
 - Ancylus smithi Cox, 1890 [SYNONYM SPECIES 9854:7Q43J nidx=null parent=76VTP]
 + Ancylus smithi J. C. Cox, 1890 [SYNONYM SPECIES 9857:9WMRN nidx=null parent=76VTP]
Annabellia assimilans
 - Annabellia assimilans (Cox, 1864) [ACCEPTED SPECIES 9854:5V4M3 nidx=null]
 + Annabellia assimilans (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WMRC nidx=null]
Anoplogynus nasutus
 - Anoplogynus nasutus Piza Jr., 1938 [SYNONYM SPECIES 9854:7RF3B nidx=null parent=7WG2V]
 + Anoplogynus nasutus Piza, 1938 [SYNONYM SPECIES 9857:9WNZ3 nidx=null parent=9WP27]
Anoplotettix fuscovenosus bipunctata
 - Anoplotettix fuscovenosus bipunctata (Horváth, 1895) [SYNONYM INFRASPECIFIC_NAME 9854:8RP6M nidx=null parent=678MC]
 + Anoplotettix fuscovenosus bipunctata (Ferrari, 1882) [SYNONYM INFRASPECIFIC_NAME 9857:9WV5N nidx=null parent=678MC]
Anoxypristis cuspidata
 - Anoxypristis cuspidata (Latham, 1794) [ACCEPTED SPECIES 9854:9HBC8 nidx=null]
 + Anoxypristis cuspidata (Latham, 1794) [ACCEPTED SPECIES 9857:9WMRL nidx=null]
Anthracopupa britannica
 - Anthracopupa britannica Cox, 1926 [ACCEPTED SPECIES 9854:67H5W nidx=null]
 + Anthracopupa britannica L. R. Cox, 1926 [ACCEPTED SPECIES 9857:9WMRP nidx=null]
Antichira taeniata madeirensis
 - Antichira taeniata madeirensis Ohaus, 1922 [SYNONYM INFRASPECIFIC_NAME 9854:7Z7NC nidx=null parent=7ZBK8]
 + Antichira taeniata madeirensis Ohaus, 1922 [SYNONYM INFRASPECIFIC_NAME 9857:7GKB5 nidx=null parent=6DK8T]
Antigona orientalis
 - Antigona orientalis Cox, 1930 [SYNONYM SPECIES 9854:5VJT7 nidx=null parent=6KJBH]
 + Antigona orientalis L. R. Cox, 1930 [SYNONYM SPECIES 9857:9WMRQ nidx=null parent=9WNVV]
Antiquilima
 - Antiquilima Cox, 1943 [ACCEPTED GENUS 9854:7NQB8 nidx=null]
 + Antiquilima L. R. Cox, 1943 [ACCEPTED GENUS 9857:9WLRZ nidx=null]
Aparchitidae
 - Aparchitidae Jones, 1901 [ACCEPTED FAMILY 9854:857WH nidx=null]
 + Aparchitidae Ulrich & Bassler, 1923 [ACCEPTED FAMILY 9857:9WLM8 nidx=null]
Aphis (Aphis) cactae
 - Aphis (Aphis) cactae [ACCEPTED SPECIES 9854:8QX63 nidx=null]
 + Aphis (Aphis) cactae [ACCEPTED SPECIES 9857:9WSSM nidx=null]
Aphis (Bursaphis) schneideri
 - Aphis (Bursaphis) schneideri (Börner, 1940) [ACCEPTED SPECIES 9854:9JSDY nidx=null]
 + Aphis (Bursaphis) schneideri (Börner, 1940) [ACCEPTED SPECIES 9857:9WMX3 nidx=null]
Aphis (Cerosipha) stachydis
 - Aphis (Cerosipha) stachydis [SYNONYM SPECIES 9854:9JSF4 nidx=null parent=67LPF]
 + Aphis (Cerosipha) stachydis [SYNONYM SPECIES 9857:9WMX6 nidx=null parent=67LPF]
Aphis citricola
 - Aphis citricola van der Goot, 1912 [AMBIGUOUS_SYNONYM SPECIES 9854:9HH6L nidx=null parent=5DJMP]
 + Aphis citricola [AMBIGUOUS_SYNONYM SPECIES 9857:9WRT9 nidx=null parent=5VLPG]
 + Aphis citricola van der Goot, 1912 [AMBIGUOUS_SYNONYM SPECIES 9857:9WRTB nidx=null parent=5DJMP]
Aphis polygoni
 - Aphis polygoni van der Goot, 1912 [AMBIGUOUS_SYNONYM SPECIES 9854:FF9V nidx=null parent=67LMT]
 + Aphis polygoni [AMBIGUOUS_SYNONYM SPECIES 9857:9WMWT nidx=null parent=8QWZ7]
 + Aphis polygoni van der Goot, 1912 [AMBIGUOUS_SYNONYM SPECIES 9857:9WMWV nidx=null parent=67LMT]
Aphistogoniulus hova
 - Aphistogoniulus hova (De Saussure & Zehntner, 1902) [ACCEPTED SPECIES 9854:FFND nidx=null]
 + Aphistogoniulus hova (De Saussure & Zehntner, 1897) [ACCEPTED SPECIES 9857:9WMRX nidx=null]
Apocyclops borneoensis
 - Apocyclops borneoensis Lindberg, 1954 [ACCEPTED SPECIES 9854:FR5Y nidx=null]
 + Apocyclops borneoensis Lindberg, 1955 [ACCEPTED SPECIES 9857:9WMRZ nidx=null]
Araeopleura
 - Araeopleura Cox, 1965 [ACCEPTED GENUS 9854:7NQSB nidx=null]
 + Araeopleura L. R. Cox, 1965 [ACCEPTED GENUS 9857:9WLSC nidx=null]
Archaediscida
 - Archaediscida Cushman, 1928 in Poyarkov & Skvortsov, 1979 [ACCEPTED ORDER 9854:7ZSTT nidx=null]
 + Archaediscida Poyarkov & Skvortsov, 1979 [ACCEPTED ORDER 9857:9WLLM nidx=null]
Archechiniscus minutus
 - Archechiniscus minutus Grimaldi de Zio & D'Addabbo Gallo, 1987 [ACCEPTED SPECIES 9854:G878 nidx=null]
 + Archechiniscus minutus de Zio Grimaldi & M. Gallo D'Addabbo, 1987 [ACCEPTED SPECIES 9857:9WMSD nidx=null]
Arctodiaptomus altissimus
 - Arctodiaptomus altissimus Kiefer, 1936 [ACCEPTED SPECIES 9854:5W42B nidx=null]
 + Arctodiaptomus altissimus Kiefer, 1939 [ACCEPTED SPECIES 9857:9WMSF nidx=null]
Arctodiaptomus stephanidesi
 - Arctodiaptomus stephanidesi [SYNONYM SPECIES 9854:7ZFZC nidx=null parent=7ZGVS]
 + Arctodiaptomus stephanidesi Pesta, 1936 [SYNONYM SPECIES 9857:9WMSJ nidx=null parent=7ZGVS]
Armina bilamella
 - Armina bilamella Lin, 1981 [ACCEPTED SPECIES 9854:GSRS nidx=null]
 + Armina bilamella G.Y. Lin, 1981 [ACCEPTED SPECIES 9857:9WMT5 nidx=null]
Armina longicauda
 - Armina longicauda Lin, 1981 [ACCEPTED SPECIES 9854:GSSG nidx=null]
 + Armina longicauda G.Y. Lin, 1981 [ACCEPTED SPECIES 9857:9WMT7 nidx=null]
Armina punctilopsis
 - Armina punctilopsis Lin, 1992 [ACCEPTED SPECIES 9854:GSSW nidx=null]
 + Armina punctilopsis G.-Y. Lin, 1992 [ACCEPTED SPECIES 9857:9WMT9 nidx=null]
Armina punctulata
 - Armina punctulata Lin, 1990 [ACCEPTED SPECIES 9854:GSSY nidx=null]
 + Armina punctulata G.-Y. Lin, 1990 [ACCEPTED SPECIES 9857:9WMTB nidx=null]
Armina sinensis
 - Armina sinensis Lin, 1981 [ACCEPTED SPECIES 9854:GST5 nidx=null]
 + Armina sinensis G.Y. Lin, 1981 [ACCEPTED SPECIES 9857:9WMTF nidx=null]
Arnemelassa creedi
 - Arnemelassa creedi (Cox, 1868) [ACCEPTED SPECIES 9854:GT27 nidx=null]
 + Arnemelassa creedi (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WMTG nidx=null]
Aspastus sellersi
 - Aspastus sellersi (Cox, 1872) [ACCEPTED SPECIES 9854:HBQ5 nidx=null]
 + Aspastus sellersi (J. C. Cox, 1872) [ACCEPTED SPECIES 9857:9WMTV nidx=null]
Assiminea magna
 - Assiminea magna Zeng & Hu, 1985 [ACCEPTED SPECIES 9854:7Q8MK nidx=null]
 + Assiminea magna D.-M. Zeng & J.-M. Hu, 1985 [ACCEPTED SPECIES 9857:9WMV2 nidx=null]
Astylozoon piriforme
 - Astylozoon piriforme [ACCEPTED SPECIES 9854:9G48V nidx=null]
 + Astylozoon piriforme [ACCEPTED SPECIES 9857:9WN2R nidx=null]
Atopocoenia
 - Atopocoenia Wells, 1973 [ACCEPTED GENUS 9854:858T5 nidx=null]
 + Atopocoenia Wells, 1974 [ACCEPTED GENUS 9857:9WSCG nidx=null]
Austrochloritis bellengerensis
 - Austrochloritis bellengerensis (Cox, 1871) [ACCEPTED SPECIES 9854:JW3R nidx=null]
 + Austrochloritis bellengerensis (J. C. Cox, 1871) [ACCEPTED SPECIES 9857:9WMY9 nidx=null]
Austrochloritis porteri
 - Austrochloritis porteri (Cox, 1866) [ACCEPTED SPECIES 9854:JW4F nidx=null]
 + Austrochloritis porteri (J. C. Cox, 1866) [ACCEPTED SPECIES 9857:9WMYB nidx=null]
Austrorhytida harriettae
 - Austrorhytida harriettae (Cox, 1868) [ACCEPTED SPECIES 9854:67XH9 nidx=null]
 + Austrorhytida harriettae (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WMYD nidx=null]
Austrosuccinea macgillivrayi
 - Austrosuccinea macgillivrayi (Cox, 1864) [SYNONYM SPECIES 9854:8HTDX nidx=null parent=8HX54]
 + Austrosuccinea macgillivrayi (J. C. Cox, 1864) [SYNONYM SPECIES 9857:9WMYF nidx=null parent=9WV2Y]
Baeturia quadrifida
 - Baeturia quadrifida (Walker, 1868) [ACCEPTED SPECIES 9854:KD8R nidx=null]
 + Baeturia quadrifida (Walker, 1870) [ACCEPTED SPECIES 9857:9WT53 nidx=null]
Baeturia reijnhoudti
 - Baeturia reijnhoudti Boer, 1989 [ACCEPTED SPECIES 9854:9HK4P nidx=null]
 + Baeturia reijnhoudti Boer, 1989 [ACCEPTED SPECIES 9857:9WT54 nidx=null]
Bairdioidea
 - Bairdioidea Sars, 1865 [ACCEPTED SUPERFAMILY 9854:84JSQ nidx=null]
 + Bairdioidea Sars, 1888 [ACCEPTED SUPERFAMILY 9857:6239F nidx=null]
Balanophyllia (Balanophyllia) capensis
 - Balanophyllia (Balanophyllia) capensis Verrill, 1865 [ACCEPTED SPECIES 9854:KFZQ nidx=null]
 + Balanophyllia (Balanophyllia) capensis Verrill, 1866 [ACCEPTED SPECIES 9857:9WMYV nidx=null]
Balanophyllia (Eupsammia) stimpsonii
 - Balanophyllia (Eupsammia) stimpsonii (Verrill, 1865) [ACCEPTED SPECIES 9854:KG44 nidx=null]
 + Balanophyllia (Eupsammia) stimpsonii (Verrill, 1866) [ACCEPTED SPECIES 9857:9WMYX nidx=null]
Balanophyllia capensis
 - Balanophyllia capensis Verrill, 1865 [SYNONYM SPECIES 9854:84WTD nidx=null parent=KFZQ]
 + Balanophyllia capensis Verrill, 1866 [SYNONYM SPECIES 9857:9WMYW nidx=null parent=9WMYV]
Balcanocerus (Balcanocerus) sasakii
 - Balcanocerus (Balcanocerus) sasakii (Ishihara, 1955) [ACCEPTED SPECIES 9854:8JQ6D nidx=null]
 + Balcanocerus (Balcanocerus) sasakii (Ishihara, 1956) [ACCEPTED SPECIES 9857:9WT58 nidx=null]
Balcanocerus myroxyli
 - Balcanocerus myroxyli (Ishihara, 1955) [ACCEPTED SPECIES 9854:8JQ6N nidx=null]
 + Balcanocerus myroxyli (Ishihara, 1956) [ACCEPTED SPECIES 9857:9WT5B nidx=null]
Balcanocerus sasakii
 - Balcanocerus sasakii (Ishihara, 1955) [SYNONYM SPECIES 9854:8JQ6R nidx=null parent=8JQ6D]
 + Balcanocerus sasakii (Ishihara, 1956) [SYNONYM SPECIES 9857:9WT59 nidx=null parent=9WT58]
Balinta sanguiniventris
 - Balinta sanguiniventris Ollenbach, 1929 [ACCEPTED SPECIES 9854:KGX9 nidx=null]
 + Balinta sanguiniventris Ollenbach, 1928 [ACCEPTED SPECIES 9857:9WT5C nidx=null]
Baseodiscus mexicanum
 - Baseodiscus mexicanum ? [SYNONYM SPECIES 9854:9JTFY nidx=null parent=84XNX]
 + Baseodiscus mexicanum ? [SYNONYM SPECIES 9857:9WMZ2 nidx=null parent=84XNX]
Baseodiscus ophiocephalus
 - Baseodiscus ophiocephalus ? [SYNONYM SPECIES 9854:9JTFZ nidx=null parent=39JVV]
 + Baseodiscus ophiocephalus ? [SYNONYM SPECIES 9857:9WMZ3 nidx=null parent=39JVV]
Bathrotomaria
 - Bathrotomaria Cox, 1956 [ACCEPTED GENUS 9854:7NZ9T nidx=null]
 + Bathrotomaria L. R. Cox, 1956 [ACCEPTED GENUS 9857:9WSCK nidx=null]
Bellamya alberti
 - Bellamya alberti (Cox, 1926) [ACCEPTED SPECIES 9854:68H9Z nidx=null]
 + Bellamya alberti (L. R. Cox, 1926) [ACCEPTED SPECIES 9857:9WMZH nidx=null]
Bentosites blomfieldi
 - Bentosites blomfieldi (Cox, 1864) [SYNONYM SPECIES 9854:7QBTG nidx=null parent=4YS3X]
 + Bentosites blomfieldi (J. C. Cox, 1864) [SYNONYM SPECIES 9857:9WT5V nidx=null parent=9WQQT]
Bentosites macleayi
 - Bentosites macleayi (Cox, 1865) [ACCEPTED SPECIES 9854:LJ3H nidx=null]
 + Bentosites macleayi (J. C. Cox, 1865) [ACCEPTED SPECIES 9857:9WMZL nidx=null]
Bithynia (Pseudemmericia) bicircaforma
 - Bithynia (Pseudemmericia) bicircaforma Zeng & Hu, 1985 [SYNONYM SPECIES 9854:7QBZL nidx=null parent=7QBZX]
 + Bithynia (Pseudemmericia) bicircaforma D.-M. Zeng & J.-M. Hu, 1985 [SYNONYM SPECIES 9857:9WN23 nidx=null parent=7QBZX]
Bithynia (Pseudemmericia) hunanensis
 - Bithynia (Pseudemmericia) hunanensis Zeng & Hu, 1985 [SYNONYM SPECIES 9854:7QBZM nidx=null parent=7QC3H]
 + Bithynia (Pseudemmericia) hunanensis D.-M. Zeng & J.-M. Hu, 1985 [SYNONYM SPECIES 9857:9WN24 nidx=null parent=7QC3H]
Blanfordia pyrrhostoma
 - Blanfordia pyrrhostoma Cox, 1868 [SYNONYM SPECIES 9854:LZXB nidx=null parent=Z36N]
 + Blanfordia pyrrhostoma J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WN25 nidx=null parent=9WNDP]
Blanonais vermicularis
 - Blanonais vermicularis Gervais, 1838 [SYNONYM SPECIES 9854:LZZ5 nidx=null parent=69NMP]
 + Blanonais vermicularis (Müller, 1788) [SYNONYM SPECIES 9857:9WN26 nidx=null parent=69NMP]
Blasicrura coxeni
 - Blasicrura coxeni (Cox, 1873) [SYNONYM SPECIES 9854:M23T nidx=null parent=6DWLG]
 + Blasicrura coxeni (J. C. Cox, 1873) [SYNONYM SPECIES 9857:9WN27 nidx=null parent=9WNP3]
Bolboceras laevicollis
 - Bolboceras laevicollis W>estwood, 1848 [SYNONYM SPECIES 9854:9JZWD nidx=null parent=MBKH]
 + Bolboceras laevicollis Westwood, 1848 [SYNONYM SPECIES 9857:9WNN7 nidx=null parent=MBKH]
Bolivina prion
 - Bolivina prion Lindenberg, 1965 [ACCEPTED SPECIES 9854:9JTV7 nidx=null]
 + Bolivina prion Lindenberg, 1965 [ACCEPTED SPECIES 9857:9WN29 nidx=null]
Bollioidea
 - Bollioidea Liebau, 2005 [ACCEPTED SUPERFAMILY 9854:9THDF nidx=null]
 + Bollioidea Boucek, 1936 [ACCEPTED SUPERFAMILY 9857:9WVBT nidx=null]
Bostryx obliquiportus laraosensis
 - Bostryx obliquiportus laraosensis Weyrauch, 1958 [SYNONYM SUBSPECIES 9854:7TR27 nidx=null parent=7QCN2]
 + Bostryx obliquiportus laraosensis Weyrauch, 1960 [SYNONYM SUBSPECIES 9857:9WR72 nidx=null parent=7QCN2]
Bothriembryon (Bothriembryon) gratwicki
 - Bothriembryon (Bothriembryon) gratwicki (Cox, 1899) [SYNONYM SPECIES 9854:7QCRB nidx=null parent=MN35]
 + Bothriembryon (Bothriembryon) gratwicki (J. C. Cox, 1899) [SYNONYM SPECIES 9857:9WN2F nidx=null parent=9WN2D]
Bothriembryon (Bothriembryon) mastersi
 - Bothriembryon (Bothriembryon) mastersi (Cox, 1867) [SYNONYM SPECIES 9854:7QCRJ nidx=null parent=MN3B]
 + Bothriembryon (Bothriembryon) mastersi (J. C. Cox, 1867) [SYNONYM SPECIES 9857:9WN2H nidx=null parent=9WN2G]
Bothriembryon (Bothriembryon) onslowi
 - Bothriembryon (Bothriembryon) onslowi (Cox, 1864) [SYNONYM SPECIES 9854:7QCRM nidx=null parent=MN3D]
 + Bothriembryon (Bothriembryon) onslowi (J. C. Cox, 1864) [SYNONYM SPECIES 9857:9WN2J nidx=null parent=9WN2K]
Bothriembryon gratwicki
 - Bothriembryon gratwicki (Cox, 1899) [ACCEPTED SPECIES 9854:MN35 nidx=null]
 + Bothriembryon gratwicki (J. C. Cox, 1899) [ACCEPTED SPECIES 9857:9WN2D nidx=null]
Bothriembryon mastersi
 - Bothriembryon mastersi (Cox, 1867) [ACCEPTED SPECIES 9854:MN3B nidx=null]
 + Bothriembryon mastersi (J. C. Cox, 1867) [ACCEPTED SPECIES 9857:9WN2G nidx=null]
Bothriembryon onslowi
 - Bothriembryon onslowi (Cox, 1864) [ACCEPTED SPECIES 9854:MN3D nidx=null]
 + Bothriembryon onslowi (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WN2K nidx=null]
Bryocyclops ankaratranus
 - Bryocyclops ankaratranus Kiefer, 1954 [ACCEPTED SPECIES 9854:NHYD nidx=null]
 + Bryocyclops ankaratranus Kiefer, 1955 [ACCEPTED SPECIES 9857:9WN2W nidx=null]
Bryocyclops fidjiensis
 - Bryocyclops fidjiensis Lindberg, 1954 [ACCEPTED SPECIES 9854:NHYR nidx=null]
 + Bryocyclops fidjiensis Lindberg, 1955 [ACCEPTED SPECIES 9857:9WN2X nidx=null]
Bryocyclops mandrakanus
 - Bryocyclops mandrakanus Kiefer, 1954 [ACCEPTED SPECIES 9854:NHYW nidx=null]
 + Bryocyclops mandrakanus Kiefer, 1955 [ACCEPTED SPECIES 9857:9WN2Y nidx=null]
Buccinum luctuosum
 - Buccinum luctuosum Tapparone Canefri, 1880 [SYNONYM SPECIES 9854:5WSH5 nidx=null parent=4J8GF]
 + Buccinum luctuosum (Tapparone Canefri, 1877) [SYNONYM SPECIES 9857:9WN3C nidx=null parent=9WQ9S]
Buliminus gratwicki
 - Buliminus gratwicki Cox, 1899 [SYNONYM SPECIES 9854:7QFJ2 nidx=null parent=MN35]
 + Buliminus gratwicki J. C. Cox, 1899 [SYNONYM SPECIES 9857:9WN3X nidx=null parent=9WN2D]
Bulimus (Charis) kreftii
 - Bulimus (Charis) kreftii Cox, 1872 [SYNONYM SPECIES 9854:NT69 nidx=null parent=4JDQ8]
 + Bulimus (Charis) kreftii J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WN42 nidx=null parent=9WQ9Y]
Bulimus (Eumecostylus) scottii
 - Bulimus (Eumecostylus) scottii Cox, 1873 [SYNONYM SPECIES 9854:NT6J nidx=null parent=3CD7F]
 + Bulimus (Eumecostylus) scottii J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WN43 nidx=null parent=9WNQY]
Bulimus (Placostylus) hobsoni
 - Bulimus (Placostylus) hobsoni Cox, 1892 [SYNONYM SPECIES 9854:NT73 nidx=null parent=3CD7G]
 + Bulimus (Placostylus) hobsoni J. C. Cox, 1892 [SYNONYM SPECIES 9857:9WN45 nidx=null parent=3CD7G]
Bulimus bidwilli
 - Bulimus bidwilli Cox, 1868 [SYNONYM SPECIES 9854:7QFZW nidx=null parent=795SG]
 + Bulimus bidwilli J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WN8Y nidx=null parent=795SG]
Bulimus hargravesi
 - Bulimus hargravesi Cox, 1871 [SYNONYM SPECIES 9854:NTDP nidx=null parent=3CD7B]
 + Bulimus hargravesi J. C. Cox, 1871 [SYNONYM SPECIES 9857:9WN46 nidx=null parent=9WNQW]
Bulimus jacksonensis
 - Bulimus jacksonensis Cox, 1864 [SYNONYM SPECIES 9854:5WRTD nidx=null parent=57FWK]
 + Bulimus jacksonensis J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WN47 nidx=null parent=9WQXR]
Bulimus mastersi
 - Bulimus mastersi Cox, 1867 [SYNONYM SPECIES 9854:7QGKT nidx=null parent=MN3B]
 + Bulimus mastersi J. C. Cox, 1867 [SYNONYM SPECIES 9857:9WN48 nidx=null parent=9WN2G]
Bulimus onslowi
 - Bulimus onslowi Cox, 1864 [SYNONYM SPECIES 9854:7QGNG nidx=null parent=MN3D]
 + Bulimus onslowi J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WN44 nidx=null parent=9WN2K]
Bulimus quoyi
 - Bulimus quoyi Cox, 1864 [SYNONYM SPECIES 9854:9G49J nidx=null parent=MN38]
 + Bulimus quoyi J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WN4B nidx=null parent=MN38]
Bulimus sanchristovalensis
 - Bulimus sanchristovalensis Cox, 1870 [SYNONYM SPECIES 9854:NTJZ nidx=null parent=6H8PD]
 + Bulimus sanchristovalensis J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WN4D nidx=null parent=9WNQX]
Bulimus sellersi
 - Bulimus sellersi Cox, 1872 [SYNONYM SPECIES 9854:NTK6 nidx=null parent=HBQ5]
 + Bulimus sellersi J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WN4F nidx=null parent=9WMTV]
Bulimus sikkimensis
 - Bulimus sikkimensis Reeve, 1830 [SYNONYM SPECIES 9854:7QGTM nidx=null parent=7QWH6]
 + Bulimus sikkimensis Reeve, 1849 [SYNONYM SPECIES 9857:9WT6V nidx=null parent=9WTGN]
Bulimus walli
 - Bulimus walli Cox, 1864 [SYNONYM SPECIES 9854:NTN2 nidx=null parent=6GFWM]
 + Bulimus walli J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WN4G nidx=null parent=6GFWM]
Bullina tuncatula
 - Bullina tuncatula Lin, 1989 [ACCEPTED SPECIES 9854:68RVL nidx=null]
 + Bullina tuncatula G.Y. Lin, 1989 [ACCEPTED SPECIES 9857:9WN4J nidx=null]
Buvignieria carixensis
 - Buvignieria carixensis Cox, 1936 [ACCEPTED SPECIES 9854:NZ95 nidx=null]
 + Buvignieria carixensis L. R. Cox, 1936 [ACCEPTED SPECIES 9857:9WN52 nidx=null]
Bythinella moulinsii
 - Bythinella moulinsii (Dupuy, 1849) [SYNONYM SPECIES 9854:7QHNW nidx=null parent=P2NF]
 + Bythinella moulinsii (Dupuy, 1849) [ACCEPTED SPECIES 9857:P2RP nidx=null]
Bythoscopus politus
 - Bythoscopus politus Walker, 1870 [SYNONYM SPECIES 9854:8JQN3 nidx=null parent=8JRYH]
 + Bythoscopus politus Walker, 1869 [SYNONYM SPECIES 9857:9WT7B nidx=null parent=9WTJP]
Caddo pepperella
 - Caddo pepperella Shear, 1974 [ACCEPTED SPECIES 9854:7RRBT nidx=null]
 + Caddo pepperella Shear, 1975 [ACCEPTED SPECIES 9857:9WNZ4 nidx=null]
Caenogastropoda
 - Caenogastropoda Cox, 1960 [ACCEPTED SUBCLASS 9854:7NVXH nidx=null]
 + Caenogastropoda L. R. Cox, 1960 [ACCEPTED SUBCLASS 9857:9WLLH nidx=null]
Caligus tenuis
 - Caligus tenuis Fowler, 1912 [PROVISIONALLY_ACCEPTED SPECIES 9854:PKL2 nidx=null]
 + Caligus tenuis (Leidy, 1889) [ACCEPTED SPECIES 9857:9WN67 nidx=null]
Callyspongia rigida
 - Callyspongia rigida Desqueyroux-Faúndez, 1984 [ACCEPTED SPECIES 9854:PWT6 nidx=null]
 + Callyspongia rigida [ACCEPTED SPECIES 9857:9WN6H nidx=null]
 + Callyspongia rigida (Lendenfeld, 1887) [ACCEPTED SPECIES 9857:9WN6J nidx=null]
Calvigenia blackmani
 - Calvigenia blackmani (Cox, 1868) [ACCEPTED SPECIES 9854:Q4ZR nidx=null]
 + Calvigenia blackmani (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WN6K nidx=null]
Calyptraphorus africanus
 - Calyptraphorus africanus Cox, 1952 [ACCEPTED SPECIES 9854:7QJSR nidx=null]
 + Calyptraphorus africanus L. R. Cox, 1952 [ACCEPTED SPECIES 9857:9WT7P nidx=null]
Cambarincola demissus
 - Cambarincola demissus Hoffman, 1963 [ACCEPTED SPECIES 9854:Q96N nidx=null]
 + Cambarincola demissus Hoffman, 1963 [ACCEPTED SPECIES 9857:9WNBB nidx=null]
Cambarincola macrodontus
 - Cambarincola macrodontus Ellis, 1912 [ACCEPTED SPECIES 9854:9JXZ4 nidx=null]
 + Cambarincola macrodontus Ellis, 1912 [ACCEPTED SPECIES 9857:9WNBT nidx=null]
Cambarincola virginicus
 - Cambarincola virginicus Hoffman, 1963 [ACCEPTED SPECIES 9854:5WWZW nidx=null]
 + Cambarincola virginicus Hoffman, 1963 [ACCEPTED SPECIES 9857:9WT8B nidx=null]
Cambarincola vitreus
 - Cambarincola vitreus Ellis, 1918 [ACCEPTED SPECIES 9854:9JXZN nidx=null]
 + Cambarincola vitreus Ellis, 1918 [ACCEPTED SPECIES 9857:9WNC4 nidx=null]
Cantharidella tesselata
 - Cantharidella tesselata (A. Adams, 1853) [SYNONYM SPECIES 9854:QMTZ nidx=null parent=73G94]
 + Cantharidella tesselata [sic] [SYNONYM SPECIES 9857:9WN6M nidx=null parent=73G94]
Cantharidus tesselatus
 - Cantharidus tesselatus (A. Adams, 1853) [SYNONYM SPECIES 9854:QMVZ nidx=null parent=73G94]
 + Cantharidus tesselatus [sic] [SYNONYM SPECIES 9857:9WN6P nidx=null parent=73G94]
Caracanthus unipinna
 - Caracanthus unipinna (Gray, 1831) [ACCEPTED SPECIES 9854:9GNSQ nidx=null]
 + Caracanthus unipinna (Gray, 1831) [ACCEPTED SPECIES 9857:9WN6S nidx=null]
Carbonicolidae
 - Carbonicolidae Cox, 1932 [ACCEPTED FAMILY 9854:7NWFF nidx=null]
 + Carbonicolidae L. R. Cox, 1932 [ACCEPTED FAMILY 9857:9WS9K nidx=null]
Cardium (Trachycardium) kenyanum
 - Cardium (Trachycardium) kenyanum Cox, 1930 [SYNONYM SPECIES 9854:R65T nidx=null parent=7FJW8]
 + Cardium (Trachycardium) kenyanum L. R. Cox, 1930 [SYNONYM SPECIES 9857:9WN6Y nidx=null parent=9WR3M]
Cardium kenyanum
 - Cardium kenyanum Cox, 1930 [SYNONYM SPECIES 9854:5WZCQ nidx=null parent=7FJW8]
 + Cardium kenyanum L. R. Cox, 1930 [SYNONYM SPECIES 9857:9WN6X nidx=null parent=9WR3M]
Carinaria cymbium
 - Carinaria cymbium Woodward, 1890 [SYNONYM SPECIES 9854:RD8L nidx=null parent=RD8T]
 + Carinaria cymbium S. P. Woodward, 1854 [SYNONYM SPECIES 9857:9WN6Z nidx=null parent=RD8T]
Cassidula paludosa
 - Cassidula paludosa [PROVISIONALLY_ACCEPTED SPECIES 9854:7QKVH nidx=null]
 + Cassidula paludosa (Garrett, 1872) [ACCEPTED SPECIES 9857:9WN75 nidx=null]
Castrella (Castrella)
 - Castrella (Castrella) Fuhrmann, 1900 [ACCEPTED SUBGENUS 9854:8N6FF nidx=null]
 + Castrella (Castrella) Fuhrmann, 1900 [ACCEPTED SUBGENUS 9857:9WLM3 nidx=null]
Cataceramus
 - Cataceramus Cox, 1969 [ACCEPTED GENUS 9854:7NWFP nidx=null]
 + Cataceramus L. R. Cox, 1969 [ACCEPTED GENUS 9857:9WLW9 nidx=null]
Cataceramus goldfussianus
 - Cataceramus goldfussianus (d'Orbigny, 1847) [ACCEPTED SPECIES 9854:RR9B nidx=null]
 + Cataceramus goldfussianus (d'Orbigny, 1846) [ACCEPTED SPECIES 9857:9WN78 nidx=null]
Ceratomyopsidae
 - Ceratomyopsidae Cox, 1964 [ACCEPTED FAMILY 9854:7NWFR nidx=null]
 + Ceratomyopsidae L. R. Cox, 1964 [ACCEPTED FAMILY 9857:9WLMB nidx=null]
Cercopachylus fragilis
 - Cercopachylus fragilis Piza Jr., 1943 [SYNONYM SPECIES 9854:7TLRT nidx=null parent=7Z6QB]
 + Cercopachylus fragilis Piza, 1943 [SYNONYM SPECIES 9857:9WNZ6 nidx=null parent=7Z6QB]
Cerithium verbeekii
 - Cerithium verbeekii Woodward, 1880 [SYNONYM SPECIES 9854:SZFS nidx=null parent=5ZDVW]
 + Cerithium verbeekii H. Woodward, 1879 [SYNONYM SPECIES 9857:9WN7N nidx=null parent=5ZDVW]
Cetonia turkestanica cyanea
 - Cetonia turkestanica cyanea Kraatz, 1886 [SYNONYM INFRASPECIFIC_NAME 9854:7Z7YZ nidx=null parent=7ZCXZ]
 + Cetonia turkestanica cyanea Kraatz, 1886 [SYNONYM INFRASPECIFIC_NAME 9857:7GNT2 nidx=null parent=4MZ8R]
Chabertia erschowi
 - Chabertia erschowi Xiong & Kong, 1956 [ACCEPTED SPECIES 9854:99ZKZ nidx=null]
 + Chabertia erschowi Hsiung & Kung, 1955 [ACCEPTED SPECIES 9857:9WS83 nidx=null]
Chama plinthota
 - Chama plinthota Cox, 1927 [SYNONYM SPECIES 9854:THSK nidx=null parent=THQD]
 + Chama plinthota L. R. Cox, 1927 [SYNONYM SPECIES 9857:9WN8F nidx=null parent=THQD]
Chemnitzia pseudomultigyrata
 - Chemnitzia pseudomultigyrata (Nomura, 1938) [SYNONYM SPECIES 9854:TWZF nidx=null parent=59P6Y]
 + Chemnitzia pseudomultigyrata (Nomura, 1936) [SYNONYM SPECIES 9857:9WN8L nidx=null parent=59P6Y]
Chersobleptes
 - Chersobleptes Henriksen, 1932 [SYNONYM GENUS 9854:7NYVF nidx=null parent=7PND]
 + Chersobleptes Sørensen, 1932 [SYNONYM GENUS 9857:9WNYF nidx=null parent=7PND]
Chloritis leei
 - Chloritis leei (Cox, 1873) [SYNONYM SPECIES 9854:7QNNW nidx=null parent=7R4H3]
 + Chloritis leei (J. C. Cox, 1873) [SYNONYM SPECIES 9857:9WTBD nidx=null parent=9WTJN]
Chloritobadistes victoriae
 - Chloritobadistes victoriae (Cox, 1868) [ACCEPTED SPECIES 9854:69WH8 nidx=null]
 + Chloritobadistes victoriae (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WN8V nidx=null]
Choristodon robustum
 - Choristodon robustum (G. B. Sowerby I, 1834) [SYNONYM SPECIES 9854:5YCXW nidx=null parent=5YCY8]
 + Choristodon robustum [sic] [SYNONYM SPECIES 9857:9WN96 nidx=null parent=5YCY8]
Chromis retrofasciata
 - Chromis retrofasciata Weber, 1913 [ACCEPTED SPECIES 9854:9G4F6 nidx=null]
 + Chromis retrofasciata Weber, 1913 [ACCEPTED SPECIES 9857:9WN9G nidx=null]
Churabana
 - Churabana Kise, Montenegro, Santos, Hoeksema, Ekins, Ise, Higashiji, Fernandez-Silva & Reimer, 2022 [ACCEPTED GENUS 9854:9DN2M nidx=null]
 + Churabana Kise, Montenegro & Reimer, 2021 [ACCEPTED GENUS 9857:9WRQM nidx=null]
Churabana kuroshioae
 - Churabana kuroshioae Kise, Montenegro, Santos, Hoeksema, Ekins, Ise, Higashiji, Fernandez-Silva & Reimer, 2022 [ACCEPTED SPECIES 9854:9DYCQ nidx=null]
 + Churabana kuroshioae Kise, Montenegro & Reimer, 2021 [ACCEPTED SPECIES 9857:9WS8J nidx=null]
Cicada bimaculata
 - Cicada bimaculata Olivier, 1791 [AMBIGUOUS_SYNONYM SPECIES 9854:V5GQ nidx=null parent=5YFLF]
 + Cicada bimaculata Stoll, 1788 [SYNONYM SPECIES 9857:9WTC3 nidx=null parent=5YFLF]
 + Cicada bimaculata Olivier, 1790 [AMBIGUOUS_SYNONYM SPECIES 9857:9WTC4 nidx=null parent=5YFLF]
Cicada quadrifida
 - Cicada quadrifida Walker, 1868 [SYNONYM SPECIES 9854:V65J nidx=null parent=KD8R]
 + Cicada quadrifida Walker, 1870 [SYNONYM SPECIES 9857:9WTCC nidx=null parent=9WT53]
Cicadella priscomarginata
 - Cicadella priscomarginata (Scudder, 1877) [ACCEPTED SPECIES 9854:V6SY nidx=null]
 + Cicadella priscomarginata (Scudder, 1890) [ACCEPTED SPECIES 9857:9WTCK nidx=null]
Cicadella priscotincta
 - Cicadella priscotincta (Scudder, 1877) [ACCEPTED SPECIES 9854:V6SZ nidx=null]
 + Cicadella priscotincta (Scudder, 1890) [ACCEPTED SPECIES 9857:9WTCL nidx=null]
Cicadella priscovariegata
 - Cicadella priscovariegata (Scudder, 1877) [ACCEPTED SPECIES 9854:V6T2 nidx=null]
 + Cicadella priscovariegata (Scudder, 1890) [ACCEPTED SPECIES 9857:9WTCM nidx=null]
Cicadetta inglisi
 - Cicadetta inglisi (Ollenbach, 1929) [ACCEPTED SPECIES 9854:V72R nidx=null]
 + Cicadetta inglisi (Ollenbach, 1928) [ACCEPTED SPECIES 9857:9WTCP nidx=null]
Cicadetta intermedia
 - Cicadetta intermedia (Ollenbach, 1929) [ACCEPTED SPECIES 9854:5Z4R4 nidx=null]
 + Cicadetta intermedia (Ollenbach, 1928) [ACCEPTED SPECIES 9857:9WTCQ nidx=null]
Circulus liricinctus
 - Circulus liricinctus (Garrett, 1873) [ACCEPTED SPECIES 9854:VG6K nidx=null]
 + Circulus liricinctus (W. H. Benson, 1853) [ACCEPTED SPECIES 9857:9WN9R nidx=null]
Cirolana borealis
 - Cirolana borealis Lilljeborg, 1851 [SYNONYM SPECIES 9854:5Z79G nidx=null parent=45TBP]
 + Cirolana borealis Liljeborg, 1851 [SYNONYM SPECIES 9857:9WN9S nidx=null parent=9WPW4]
Cladocopina
 - Cladocopina Sars, 1865 [ACCEPTED SUBORDER 9854:84JRQ nidx=null]
 + Cladocopina Sars, 1866 [ACCEPTED SUBORDER 9857:9WLLQ nidx=null]
Clarias nieuhofii
 - Clarias nieuhofii Valenciennes, 1840 [ACCEPTED SPECIES 9854:9JXVC nidx=null]
 + Clarias nieuhofii Valenciennes, 1840 [ACCEPTED SPECIES 9857:9WN9X nidx=null]
Clathrobaculus westhayensis
 - Clathrobaculus westhayensis (Cox, 1936) [ACCEPTED SPECIES 9854:8VLJX nidx=null]
 + Clathrobaculus westhayensis (L. R. Cox, 1936) [ACCEPTED SPECIES 9857:9WTDV nidx=null]
Clavus maravignae
 - Clavus maravignae (Ant. Bivona, 1838) [SYNONYM SPECIES 9854:9G4FZ nidx=null parent=9G4J7]
 + Clavus maravignae (Bivona, 1838) [SYNONYM SPECIES 9857:9WNC9 nidx=null parent=9WNDX]
Cleopatra bifidicincta
 - Cleopatra bifidicincta Cox, 1926 [SYNONYM SPECIES 9854:W2NL nidx=null parent=4M35L]
 + Cleopatra bifidicincta L. R. Cox, 1926 [SYNONYM SPECIES 9857:9WNCB nidx=null parent=9WQDJ]
Cleptoria abbotti
 - Cleptoria abbotti Hoffman, 1967 [SYNONYM SPECIES 9854:8R7JK nidx=null parent=8RF3Y]
 + Cleptoria abbotti Hoffman, 1967 [ACCEPTED SPECIES 9857:W3D6 nidx=null]
Cobbonchus inclinatus
 - Cobbonchus inclinatus Choi & Khan, 2000 [ACCEPTED SPECIES 9854:8GQVF nidx=null]
 + Cobbonchus inclinatus Dhanam & Jairjapuri, 1998 [ACCEPTED SPECIES 9857:9WTF7 nidx=null]
Cobbonchus papillatus
 - Cobbonchus papillatus Choi & Khan, 2000 [ACCEPTED SPECIES 9854:8GQVG nidx=null]
 + Cobbonchus papillatus Dhanam & Jairjapuri, 1998 [ACCEPTED SPECIES 9857:9WTF8 nidx=null]
Cochleopsaltria
 - Cochleopsaltria Pham & Constant, 2018 [ACCEPTED GENUS 9854:8JKXG nidx=null]
 + Cochleopsaltria Pham & Constant, 2017 [ACCEPTED GENUS 9857:9WSD7 nidx=null]
Cochleopsaltria duffelsi
 - Cochleopsaltria duffelsi Pham & Constant, 2018 [ACCEPTED SPECIES 9854:8JR86 nidx=null]
 + Cochleopsaltria duffelsi Pham & Constant, 2017 [ACCEPTED SPECIES 9857:9WTF9 nidx=null]
Cochlostyla hindei
 - Cochlostyla hindei Cox, 1886 [SYNONYM SPECIES 9854:WNPQ nidx=null parent=4CLVG]
 + Cochlostyla hindei J. C. Cox, 1886 [SYNONYM SPECIES 9857:9WNCH nidx=null parent=9WQ59]
Coneuplecta (Nevelasta) pampini
 - Coneuplecta (Nevelasta) pampini (Cox, 1868) [SYNONYM SPECIES 9854:7QS74 nidx=null parent=5ZTGN]
 + Coneuplecta (Nevelasta) pampini (J. C. Cox, 1868) [SYNONYM SPECIES 9857:9WNCZ nidx=null parent=9WND2]
Coneuplecta pampini
 - Coneuplecta pampini (Cox, 1868) [ACCEPTED SPECIES 9854:5ZTGN nidx=null]
 + Coneuplecta pampini (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WND2 nidx=null]
Conotomaria
 - Conotomaria Cox, 1959 [ACCEPTED GENUS 9854:7P284 nidx=null]
 + Conotomaria L. R. Cox, 1959 [ACCEPTED GENUS 9857:9WSDB nidx=null]
Coralliophila squamosa
 - Coralliophila squamosa (Ant. Bivona, 1838) [SYNONYM SPECIES 9854:9G4HQ nidx=null parent=3M4N7]
 + Coralliophila squamosa (Bivona e Bernardi, 1838) [SYNONYM SPECIES 9857:9WNDC nidx=null parent=3M4N7]
Cornechiniscus cornutus
 - Cornechiniscus cornutus (Richters, 1906) [ACCEPTED SPECIES 9854:YFXL nidx=null]
 + Cornechiniscus cornutus (Richters, 1907) [ACCEPTED SPECIES 9857:9WNDD nidx=null]
Cosmetus mesacanthus
 - Cosmetus mesacanthus Kollar, 1839 [ACCEPTED SPECIES 9854:7VGJ4 nidx=null]
 + Cosmetus mesacanthus Koch, 1839 [SYNONYM SPECIES 9857:9WNZ7 nidx=null parent=7VGJL]
Cosmopsaltria waine
 - Cosmopsaltria waine Duffels, 1983 [ACCEPTED SPECIES 9854:6B88D nidx=null]
 + Cosmopsaltria waine Duffels, 1991 [ACCEPTED SPECIES 9857:9WTG2 nidx=null]
Coxia macgregori
 - Coxia macgregori (Cox, 1870) [ACCEPTED SPECIES 9854:7QTT6 nidx=null]
 + Coxia macgregori (J. C. Cox, 1870) [ACCEPTED SPECIES 9857:9WNDN nidx=null]
Coxia macgregori macgregori
 - Coxia macgregori macgregori (Cox, 1870) [ACCEPTED SUBSPECIES 9854:8RXRY nidx=null]
 + Coxia macgregori macgregori (J. C. Cox, 1870) [ACCEPTED SUBSPECIES 9857:9WV6L nidx=null]
Coxiella (Coxiella) pyrrhostoma
 - Coxiella (Coxiella) pyrrhostoma (Cox, 1868) [SYNONYM SPECIES 9854:7QTTF nidx=null parent=Z36N]
 + Coxiella (Coxiella) pyrrhostoma (J. C. Cox, 1868) [SYNONYM SPECIES 9857:9WNDQ nidx=null parent=9WNDP]
Coxiella pyrrhostoma
 - Coxiella pyrrhostoma (Cox, 1868) [ACCEPTED SPECIES 9854:Z36N nidx=null]
 + Coxiella pyrrhostoma (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WNDP nidx=null]
Coxitrigonia tealei
 - Coxitrigonia tealei (Cox, 1937) [ACCEPTED SPECIES 9854:6B9QS nidx=null]
 + Coxitrigonia tealei (L. R. Cox, 1937) [ACCEPTED SPECIES 9857:9WNDS nidx=null]
Cralopa stroudensis
 - Cralopa stroudensis (Cox, 1864) [ACCEPTED SPECIES 9854:6BB3S nidx=null]
 + Cralopa stroudensis (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WNDT nidx=null]
Crassopleura maravignae
 - Crassopleura maravignae (Ant. Bivona, 1838) [ACCEPTED SPECIES 9854:9G4J7 nidx=null]
 + Crassopleura maravignae (Bivona, 1838) [ACCEPTED SPECIES 9857:9WNDX nidx=null]
Cremnoceramus
 - Cremnoceramus Cox, 1969 [ACCEPTED GENUS 9854:7P2GG nidx=null]
 + Cremnoceramus L. R. Cox, 1969 [ACCEPTED GENUS 9857:9WLYM nidx=null]
Cristigibba wesselensis
 - Cristigibba wesselensis (Cox, 1868) [ACCEPTED SPECIES 9854:6BGJ6 nidx=null]
 + Cristigibba wesselensis (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WNF3 nidx=null]
Crossostomatinae
 - Crossostomatinae Cox, 1960 [ACCEPTED SUBFAMILY 9854:7NXKF nidx=null]
 + Crossostomatinae L. R. Cox, 1960 [ACCEPTED SUBFAMILY 9857:9WLPV nidx=null]
Cryptocharopa exagitans
 - Cryptocharopa exagitans (Cox, 1870) [ACCEPTED SPECIES 9854:6BMFB nidx=null]
 + Cryptocharopa exagitans (J. C. Cox, 1870) [ACCEPTED SPECIES 9857:9WNF5 nidx=null]
Crystallopsis (Crystallopsis) balcombei
 - Crystallopsis (Crystallopsis) balcombei (Cox, 1873) [SYNONYM SPECIES 9854:323ZN nidx=null parent=32425]
 + Crystallopsis (Crystallopsis) balcombei (J. C. Cox, 1873) [SYNONYM SPECIES 9857:9WNFF nidx=null parent=9WNFD]
Crystallopsis (Crystallopsis) hunteri
 - Crystallopsis (Crystallopsis) hunteri (Cox, 1872) [SYNONYM SPECIES 9854:6BN5H nidx=null parent=3242C]
 + Crystallopsis (Crystallopsis) hunteri (J. C. Cox, 1872) [SYNONYM SPECIES 9857:9WNFG nidx=null parent=9WNFH]
Crystallopsis balcombei
 - Crystallopsis balcombei (Cox, 1873) [ACCEPTED SPECIES 9854:32425 nidx=null]
 + Crystallopsis balcombei (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WNFD nidx=null]
Crystallopsis hunteri
 - Crystallopsis hunteri (Cox, 1872) [ACCEPTED SPECIES 9854:3242C nidx=null]
 + Crystallopsis hunteri (J. C. Cox, 1872) [ACCEPTED SPECIES 9857:9WNFH nidx=null]
Ctenopoma multispine
 - Ctenopoma multispine Peters, 1844 [ACCEPTED SPECIES 9854:9HDDJ nidx=null]
 + Ctenopoma multispine Peters, 1844 [ACCEPTED SPECIES 9857:9WNFN nidx=null]
Cuneigervillia
 - Cuneigervillia Cox, 1954 [ACCEPTED GENUS 9854:9THGH nidx=null]
 + Cuneigervillia L. R. Cox, 1955 [ACCEPTED GENUS 9857:9WVDG nidx=null]
Cupedora luteofusca
 - Cupedora luteofusca (Cox, 1868) [ACCEPTED SPECIES 9854:6BS5M nidx=null]
 + Cupedora luteofusca (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WNFR nidx=null]
Curvella sikkimensis
 - Curvella sikkimensis (Reeve, 1830) [ACCEPTED SPECIES 9854:7QWH6 nidx=null]
 + Curvella sikkimensis (Reeve, 1849) [ACCEPTED SPECIES 9857:9WTGN nidx=null]
Cuspidaria (Myonera) demistriata
 - Cuspidaria (Myonera) demistriata Allen & de Morgan, 1981 [SYNONYM SPECIES 9854:7QWJ4 nidx=null parent=KXCW]
 + Cuspidaria (Myonera) demistriata Allen & Morgan, 1981 [SYNONYM SPECIES 9857:32M5Z nidx=null parent=KXCW]
Cuspidaria demistriata
 - Cuspidaria demistriata Allen & de Morgan, 1981 [SYNONYM SPECIES 9854:7QWJR nidx=null parent=KXCW]
 + Cuspidaria demistriata Allen & Morgan, 1981 [SYNONYM SPECIES 9857:6C2XC nidx=null parent=KXCW]
Cyamium (Cyamiomactra) problematicum
 - Cyamium (Cyamiomactra) problematicum (F. Bernard, 1971) [SYNONYM SPECIES 9854:7QWLN nidx=null parent=32MYD]
 + Cyamium (Cyamiomactra) problematicum (F. R. Bernard, 1897) [SYNONYM SPECIES 9857:9WTGP nidx=null parent=32MYD]
Cyclophorus (Glossostylus) zebrinus var. ambigua
 - Cyclophorus (Glossostylus) zebrinus var. ambigua Martens, 1886 [SYNONYM VARIETY 9854:7V5X2 nidx=null parent=7V5XW]
 + Cyclophorus (Glossostylus) zebrinus var. ambigua E. von Martens, 1887 [SYNONYM VARIETY 9857:9WV6T nidx=null parent=9WV6S]
Cyclophorus (Salpingophorus) aurantiacus var. reevei
 - Cyclophorus (Salpingophorus) aurantiacus var. reevei Martens, 1886 [SYNONYM VARIETY 9854:7V5XC nidx=null parent=32VHC]
 + Cyclophorus (Salpingophorus) aurantiacus var. reevei E. von Martens, 1887 [SYNONYM VARIETY 9857:9WV6P nidx=null parent=32VHC]
Cyclophorus aurantiacus andersoni
 - Cyclophorus aurantiacus andersoni Martens, 1886 [SYNONYM SUBSPECIES 9854:7TT2R nidx=null parent=32VHC]
 + Cyclophorus aurantiacus andersoni E. von Martens, 1887 [SYNONYM SUBSPECIES 9857:9WTCX nidx=null parent=32VHC]
Cyclophorus aurantiacus nevilli
 - Cyclophorus aurantiacus nevilli E. von Martens, 1886 [SYNONYM SUBSPECIES 9854:7TT2S nidx=null parent=32VHC]
 + Cyclophorus aurantiacus nevilli E. von Martens, 1887 [SYNONYM SUBSPECIES 9857:9WTCY nidx=null parent=32VHC]
Cyclophorus aurantiacus reevei
 - Cyclophorus aurantiacus reevei Martens, 1886 [SYNONYM SUBSPECIES 9854:7TT2T nidx=null parent=32VHC]
 + Cyclophorus aurantiacus reevei E. von Martens, 1887 [SYNONYM SUBSPECIES 9857:9WV6Q nidx=null parent=32VHC]
Cyclophorus aurantiacus typicus
 - Cyclophorus aurantiacus typicus Martens, 1886 [SYNONYM SUBSPECIES 9854:7TT2V nidx=null parent=32VHC]
 + Cyclophorus aurantiacus typicus E. von Martens, 1887 [SYNONYM SUBSPECIES 9857:9WV6R nidx=null parent=32VHC]
Cyclophorus nevilli
 - Cyclophorus nevilli E. von Martens, 1886 [SYNONYM SPECIES 9854:8QGFC nidx=null parent=32VHC]
 + Cyclophorus nevilli E. von Martens, 1887 [SYNONYM SPECIES 9857:9WTGZ nidx=null parent=32VHC]
Cyclophorus zebrinus ambiguus
 - Cyclophorus zebrinus ambiguus Martens, 1886 [SYNONYM SUBSPECIES 9854:7TT4H nidx=null parent=7V5XW]
 + Cyclophorus zebrinus ambiguus E. von Martens, 1887 [SYNONYM SUBSPECIES 9857:9WV6V nidx=null parent=9WV6S]
Cyclophorus zebrinus var. ambigua
 - Cyclophorus zebrinus var. ambigua Martens, 1886 [ACCEPTED VARIETY 9854:7V5XW nidx=null]
 + Cyclophorus zebrinus var. ambigua E. von Martens, 1887 [ACCEPTED VARIETY 9857:9WV6S nidx=null]
Cyclops furcifer caspicus
 - Cyclops furcifer caspicus Lindberg, 1956 [SYNONYM SUBSPECIES 9854:7ZGYB nidx=null parent=7ZFND]
 + Cyclops furcifer caspicus Lindberg, 1942 [SYNONYM SUBSPECIES 9857:9WR84 nidx=null parent=7ZFND]
Cyclops lacustris
 - Cyclops lacustris Sars G.O., 1862 [SYNONYM SPECIES 9854:7SVPD nidx=null parent=7ZFND]
 + Cyclops lacustris Sars G.O., 1863 [SYNONYM SPECIES 9857:32W8H nidx=null parent=7ZFND]
Cyclops rubens landei
 - Cyclops rubens landei (Kozminski, 1927) [ACCEPTED SUBSPECIES 9854:7ZGYL nidx=null]
 + Cyclops rubens landei (Kozminski, 1933) [SYNONYM SUBSPECIES 9857:9WR85 nidx=null parent=9WNGL]
Cyclops strenuus landei
 - Cyclops strenuus landei Kozminski, 1927 [ACCEPTED SUBSPECIES 9854:7ZGZ4 nidx=null]
 + Cyclops strenuus landei Kozminski, 1933 [SYNONYM SUBSPECIES 9857:9WR86 nidx=null parent=9WNGL]
Cyclops tatricus
 - Cyclops tatricus Kozminski, 1927 [SYNONYM SPECIES 9854:7ZG6V nidx=null parent=7XCH8]
 + Cyclops tatricus Kozminski, 1932 [SYNONYM SPECIES 9857:9WNGP nidx=null parent=7XCH8]
Cyclops unisetiger biarticulata
 - Cyclops unisetiger biarticulata Kiefer, 1928 [ACCEPTED SUBSPECIES 9854:7ZGZL nidx=null]
 + Cyclops unisetiger biarticulata Kiefer, 1926 [ACCEPTED SUBSPECIES 9857:9WR87 nidx=null]
Cylindroleberidoidea
 - Cylindroleberidoidea Müller, 1906 [ACCEPTED SUPERFAMILY 9854:84JST nidx=null]
 + Cylindroleberidoidea Mueller, 1906 [ACCEPTED SUPERFAMILY 9857:4ZZ nidx=null]
Cylindrovertilla kingi
 - Cylindrovertilla kingi (Cox, 1864) [ACCEPTED SPECIES 9854:334HR nidx=null]
 + Cylindrovertilla kingi (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WNH6 nidx=null]
Cylista undata
 - Cylista undata (Müller, 1778) [ACCEPTED SPECIES 9854:7VK9H nidx=null]
 + Cylista undata (Müller, 1778) [SYNONYM SPECIES 9857:334L3 nidx=null parent=7YW7T]
Cymatium (Linatella) krenkeli
 - Cymatium (Linatella) krenkeli Cox, 1930 [SYNONYM SPECIES 9854:6C753 nidx=null parent=72GCQ]
 + Cymatium (Linatella) krenkeli L. R. Cox, 1930 [SYNONYM SPECIES 9857:9WNHB nidx=null parent=72GCQ]
Cymbiola molengraaffi
 - Cymbiola molengraaffi (Cox, 1948) [ACCEPTED SPECIES 9854:336MV nidx=null]
 + Cymbiola molengraaffi (L. R. Cox, 1948) [ACCEPTED SPECIES 9857:9WNHN nidx=null]
Cymothoidae
 - Cymothoidae Leach, 1818 [ACCEPTED FAMILY 9854:7NH43 nidx=null]
 + Cymothoidae Leach, 1814 [ACCEPTED FAMILY 9857:9WKK3 nidx=null]
Cynorta aveledoi
 - Cynorta aveledoi González-Sponga, 2008 [ACCEPTED SPECIES 9854:7VKVW nidx=null]
 + Cynorta aveledoi González-Sponga, 2009 [ACCEPTED SPECIES 9857:9WNZ9 nidx=null]
Cynorta pozoblancoi
 - Cynorta pozoblancoi González-Sponga, 2008 [ACCEPTED SPECIES 9854:7VL2C nidx=null]
 + Cynorta pozoblancoi González-Sponga, 2009 [ACCEPTED SPECIES 9857:9WNZD nidx=null]
Cynortopyga pauper
 - Cynortopyga pauper (Piza, 1938) [ACCEPTED SPECIES 9854:7VL5M nidx=null]
 + Cynortopyga pauper (Piza Jr., 1938) [ACCEPTED SPECIES 9857:9WNZF nidx=null]
Cypraea coxeni
 - Cypraea coxeni Cox, 1873 [SYNONYM SPECIES 9854:33GWQ nidx=null parent=6DWLG]
 + Cypraea coxeni J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WNHV nidx=null parent=9WNP3]
Cypraea irvineanae
 - Cypraea irvineanae Cox, 1890 [SYNONYM SPECIES 9854:7QZ5S nidx=null parent=5DNDS]
 + Cypraea irvineanae J. C. Cox, 1890 [SYNONYM SPECIES 9857:9WTH9 nidx=null parent=5DNDS]
Cypraea pembana
 - Cypraea pembana Cox, 1927 [SYNONYM SPECIES 9854:8M3GC nidx=null parent=8M3LF]
 + Cypraea pembana L. R. Cox, 1927 [SYNONYM SPECIES 9857:9WTHB nidx=null parent=9WTPX]
Cypraea thatcheri
 - Cypraea thatcheri Cox, 1869 [SYNONYM SPECIES 9854:33H7J nidx=null parent=5D6M3]
 + Cypraea thatcheri J. C. Cox, 1869 [SYNONYM SPECIES 9857:9WNHX nidx=null parent=5D6M3]
Cypraea umbilicata alba
 - Cypraea umbilicata alba Cox, 1880 [SYNONYM SUBSPECIES 9854:7TT7V nidx=null parent=7DGTV]
 + Cypraea umbilicata alba J. C. Cox, 1880 [SYNONYM SUBSPECIES 9857:9WV6W nidx=null parent=7DGTV]
Cythere costataxi
 - Cythere costataxi ? [SYNONYM SPECIES 9854:9JZ9C nidx=null parent=KDBP]
 + Cythere costataxi ? [SYNONYM SPECIES 9857:9WNJ2 nidx=null parent=KDBP]
Cytherelloidea
 - Cytherelloidea G.O. Sars, 1866 [ACCEPTED SUPERFAMILY 9854:84JSX nidx=null]
 + Cytherelloidea Sars, 1866 [ACCEPTED SUPERFAMILY 9857:52B nidx=null]
Dacryomya gaveyi
 - Dacryomya gaveyi (Cox, 1960) [ACCEPTED SPECIES 9854:7QZXH nidx=null]
 + Dacryomya gaveyi (L. R. Cox, 1960) [ACCEPTED SPECIES 9857:9WTHF nidx=null]
Daptonema circumscriptum
 - Daptonema circumscriptum Wieser, 1959 [ACCEPTED SPECIES 9854:8G6FH nidx=null]
 + Daptonema circumscriptum (Wieser, 1959) Lorenzen, 1977 [ACCEPTED SPECIES 9857:9WNJD nidx=null]
Daptonema clavicaudatum
 - Daptonema clavicaudatum (Gerlach, 1953) Lorenzen, 1981 [ACCEPTED SPECIES 9854:8G6FL nidx=null]
 + Daptonema clavicaudatum (Gerlach, 1953) Lorenzen, 1977 [ACCEPTED SPECIES 9857:9WNJF nidx=null]
Daptonema curvatum
 - Daptonema curvatum (Gerlach, 1956) [ACCEPTED SPECIES 9854:8G6FR nidx=null]
 + Daptonema curvatum (Gerlach, 1956) Wieser, 1959 [ACCEPTED SPECIES 9857:9WNJG nidx=null]
Debrunia sulcata
 - Debrunia sulcata (Matheron, 1843) [ACCEPTED SPECIES 9854:34CMD nidx=null]
 + Debrunia sulcata (Matheron, 1842) [ACCEPTED SPECIES 9857:9WNJN nidx=null]
Decoriropa lirata
 - Decoriropa lirata (Cox, 1864) [ACCEPTED SPECIES 9854:6CFBT nidx=null]
 + Decoriropa lirata (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WNJP nidx=null]
Deltocephalus virgulatulus
 - Deltocephalus virgulatulus Van Duzee, 1894 [SYNONYM SPECIES 9854:8JN6H nidx=null parent=6ZW2Z]
 + Deltocephalus virgulatulus (Osborn, 1892) [SYNONYM SPECIES 9857:9WTHX nidx=null parent=6ZW2Z]
Dentherona saturni
 - Dentherona saturni (Cox, 1864) [SYNONYM SPECIES 9854:34TVH nidx=null parent=6D7ZL]
 + Dentherona saturni (J. C. Cox, 1864) [SYNONYM SPECIES 9857:9WNJX nidx=null parent=9WNKS]
Dermatobranchus marginlatus
 - Dermatobranchus marginlatus Lin, 1981 [ACCEPTED SPECIES 9854:34WVQ nidx=null]
 + Dermatobranchus marginlatus G.Y. Lin, 1981 [ACCEPTED SPECIES 9857:9WNJY nidx=null]
Dermatobranchus multistriatus
 - Dermatobranchus multistriatus Lin, 1981 [ACCEPTED SPECIES 9854:34WVT nidx=null]
 + Dermatobranchus multistriatus G.Y. Lin, 1981 [ACCEPTED SPECIES 9857:9WNJZ nidx=null]
Dermatobranchus tongshanensis
 - Dermatobranchus tongshanensis Lin, 1981 [ACCEPTED SPECIES 9854:34WWD nidx=null]
 + Dermatobranchus tongshanensis G.Y. Lin, 1981 [ACCEPTED SPECIES 9857:9WNK3 nidx=null]
Diaptomus fischeri
 - Diaptomus fischeri Rylov, 1918 [SYNONYM SPECIES 9854:35DKL nidx=null parent=67RQF]
 + Diaptomus fischeri Rylov, 1922 [SYNONYM SPECIES 9857:9WNKC nidx=null parent=67RQF]
Diaptomus hutchinsoni
 - Diaptomus hutchinsoni Kiefer, 1927 [SYNONYM SPECIES 9854:35DLP nidx=null parent=59D6K]
 + Diaptomus hutchinsoni Kiefer, 1928 [SYNONYM SPECIES 9857:9WNKD nidx=null parent=59D6K]
Diaptomus madagascariensis
 - Diaptomus madagascariensis Rylov, 1918 [SYNONYM SPECIES 9854:35DNL nidx=null parent=59D6Z]
 + Diaptomus madagascariensis Rylov, 1922 [SYNONYM SPECIES 9857:9WNKF nidx=null parent=59D6Z]
Dioxys productus subruber
 - Dioxys productus subruber (Cockerell, 1898) [ACCEPTED SUBSPECIES 9854:93VM2 nidx=null]
 + Dioxys productus subruber (Cockerell, 1898) [ACCEPTED SUBSPECIES 9857:9WS69 nidx=null]
Diphascon alpinus
 - Diphascon alpinus Murray, 1906 [SYNONYM SPECIES 9854:7T87V nidx=null parent=7T84J]
 + Diphascon alpinus Murray, 1906 [SYNONYM SPECIES 9857:36FH2 nidx=null parent=36FGZ]
Diphascon chilense
 - Diphascon chilense Plate, 1889 [SYNONYM SPECIES 9854:7T87Z nidx=null parent=7T84T]
 + Diphascon chilense Plate, 1889 [SYNONYM SPECIES 9857:36FHL nidx=null parent=36FHK]
Diphascon puniceus
 - Diphascon puniceus (Jennings, 1976) [SYNONYM SPECIES 9854:7T88B nidx=null parent=7T86N]
 + Diphascon puniceus (Jennings, 1976) [SYNONYM SPECIES 9857:36FK6 nidx=null parent=36FK5]
Diphyoropa saturni
 - Diphyoropa saturni (Cox, 1864) [ACCEPTED SPECIES 9854:6D7ZL nidx=null]
 + Diphyoropa saturni (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WNKS nidx=null]
Diplocolenus (Diplocolenus) fraternellus
 - Diplocolenus (Diplocolenus) fraternellus (Baker, 1926) [ACCEPTED SPECIES 9854:36JZF nidx=null]
 + Diplocolenus (Diplocolenus) fraternellus (Baker, 1925) [ACCEPTED SPECIES 9857:9WPBL nidx=null]
Diplommatina brazieri
 - Diplommatina brazieri Cox, 1870 [SYNONYM SPECIES 9854:36LZQ nidx=null parent=4C33Q]
 + Diplommatina brazieri J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WNKX nidx=null parent=9WQ3S]
Diplommatina wisemani
 - Diplommatina wisemani Cox, 1870 [SYNONYM SPECIES 9854:36M4G nidx=null parent=4C36S]
 + Diplommatina wisemani J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WNKY nidx=null parent=9WQ3V]
Diplomorpha peasei
 - Diplomorpha peasei (Cox, 1872) [ACCEPTED SPECIES 9854:36M5S nidx=null]
 + Diplomorpha peasei (J. C. Cox, 1872) [ACCEPTED SPECIES 9857:9WNKZ nidx=null]
Discocharopa pexa
 - Discocharopa pexa (Cox, 1868) [ACCEPTED SPECIES 9854:36T8K nidx=null]
 + Discocharopa pexa (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WNLK nidx=null]
Discocyrtulusoma soaresi
 - Discocyrtulusoma soaresi Piza Jr., 1943 [SYNONYM SPECIES 9854:7VS8B nidx=null parent=7XT8W]
 + Discocyrtulusoma soaresi Piza, 1943 [SYNONYM SPECIES 9857:9WNZH nidx=null parent=7XT8W]
Discocyrtus cornutus
 - Discocyrtus cornutus Piza Jr., 1940 [SYNONYM SPECIES 9854:7VS8W nidx=null parent=7XT8W]
 + Discocyrtus cornutus Piza, 1940 [SYNONYM SPECIES 9857:9WNZK nidx=null parent=7XT8W]
Discocyrtus granulatus
 - Discocyrtus granulatus Soares & Soares, 1970 [ACCEPTED SPECIES 9854:7VS9C nidx=null]
 + Discocyrtus granulatus Soares & Soares, 1945 [ACCEPTED SPECIES 9857:9WNZL nidx=null]
Discocyrtus guarauna
 - Discocyrtus guarauna Piza, 1940 [ACCEPTED SPECIES 9854:7VS9D nidx=null]
 + Discocyrtus guarauna Piza Jr., 1940 [ACCEPTED SPECIES 9857:9WNZM nidx=null]
Discocyrtus invalidus
 - Discocyrtus invalidus Piza, 1938 [ACCEPTED SPECIES 9854:7VS9K nidx=null]
 + Discocyrtus invalidus Piza Jr., 1938 [SYNONYM SPECIES 9857:9WNZN nidx=null parent=9WYZS]
Discocyrtus transversalis
 - Discocyrtus transversalis Piza Jr., 1940 [SYNONYM SPECIES 9854:7VSBN nidx=null parent=7XT8X]
 + Discocyrtus transversalis Piza, 1940 [SYNONYM SPECIES 9857:9WNZP nidx=null parent=7XT8X]
Disteustoma leei
 - Disteustoma leei (Cox, 1873) [ACCEPTED SPECIES 9854:7R4H3 nidx=null]
 + Disteustoma leei (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WTJN nidx=null]
Dolopupina wilcoxi
 - Dolopupina wilcoxi (Cox, 1864) [SYNONYM SPECIES 9854:378MV nidx=null parent=6YPJL]
 + Dolopupina wilcoxi (J. C. Cox, 1864) [SYNONYM SPECIES 9857:9WNLS nidx=null parent=9WQQ3]
Drabescus politus
 - Drabescus politus (Walker, 1870) [ACCEPTED SPECIES 9854:8JRYH nidx=null]
 + Drabescus politus (Walker, 1869) [ACCEPTED SPECIES 9857:9WTJP nidx=null]
Dreissena gallandi
 - Dreissena gallandi Locard, 1893 [ACCEPTED SPECIES 9854:37M6K nidx=null]
 + Dreissena gallandi Bourguignat, 1893 [ACCEPTED SPECIES 9857:9WNML nidx=null]
Dreissena paradoxa
 - Dreissena paradoxa Locard, 1893 [SYNONYM SPECIES 9854:37M78 nidx=null parent=37M79]
 + Dreissena paradoxa Bourguignat, 1893 [SYNONYM SPECIES 9857:9WNMM nidx=null parent=37M79]
Dreissena siouffi
 - Dreissena siouffi Locard, 1893 [ACCEPTED SPECIES 9854:37M7G nidx=null]
 + Dreissena siouffi Bourguignat, 1893 [ACCEPTED SPECIES 9857:9WNMN nidx=null]
Dreissensia belgrandi
 - Dreissensia belgrandi Locard, 1893 [SYNONYM SPECIES 9854:9WK88 nidx=null parent=37M79]
 + Dreissensia belgrandi Bourguignat, 1882 [SYNONYM SPECIES 9857:9WZ7B nidx=null parent=37M79]
Dreissensia complanata
 - Dreissensia complanata Locard, 1893 [SYNONYM SPECIES 9854:9WJWM nidx=null parent=37M79]
 + Dreissensia complanata Bourguignat, 1893 [SYNONYM SPECIES 9857:9WZ6K nidx=null parent=37M79]
Dreissensia curta
 - Dreissensia curta Locard, 1893 [SYNONYM SPECIES 9854:9WK4V nidx=null parent=37M79]
 + Dreissensia curta Bourguignat, 1893 [SYNONYM SPECIES 9857:9WZ6W nidx=null parent=37M79]
Dreissensia lacunosa
 - Dreissensia lacunosa Locard, 1893 [SYNONYM SPECIES 9854:9WK98 nidx=null parent=37M6K]
 + Dreissensia lacunosa Bourguignat, 1893 [SYNONYM SPECIES 9857:9WZ7D nidx=null parent=9WNML]
Dreissensia lutetiana
 - Dreissensia lutetiana Locard, 1893 [SYNONYM SPECIES 9854:9WK22 nidx=null parent=37M79]
 + Dreissensia lutetiana Bourguignat, 1893 [SYNONYM SPECIES 9857:9WZ6T nidx=null parent=37M79]
Dreissensia occidentalis
 - Dreissensia occidentalis Locard, 1893 [SYNONYM SPECIES 9854:9WJRB nidx=null parent=37M79]
 + Dreissensia occidentalis Bourguignat, 1893 [SYNONYM SPECIES 9857:9WZ6C nidx=null parent=37M79]
Dreissensia sulcata
 - Dreissensia sulcata Locard, 1893 [SYNONYM SPECIES 9854:9WK44 nidx=null parent=37M79]
 + Dreissensia sulcata Bourguignat, 1893 [SYNONYM SPECIES 9857:9WZ6V nidx=null parent=37M79]
Dreissensia tumida
 - Dreissensia tumida Locard, 1893 [SYNONYM SPECIES 9854:9WK5K nidx=null parent=37M79]
 + Dreissensia tumida Bourguignat, 1893 [SYNONYM SPECIES 9857:9WZ6Z nidx=null parent=37M79]
Dreissensia ventrosa
 - Dreissensia ventrosa Locard, 1893 [SYNONYM SPECIES 9854:9WK5X nidx=null parent=37M79]
 + Dreissensia ventrosa Bourguignat, 1893 [SYNONYM SPECIES 9857:9WZ75 nidx=null parent=37M79]
Dubertretia
 - Dubertretia Cox, 1965 [ACCEPTED GENUS 9854:7P37H nidx=null]
 + Dubertretia L. R. Cox, 1965 [ACCEPTED GENUS 9857:9WM33 nidx=null]
Dubertretia kelleri
 - Dubertretia kelleri Cox, 1965 [ACCEPTED SPECIES 9854:37YTS nidx=null]
 + Dubertretia kelleri L. R. Cox, 1965 [ACCEPTED SPECIES 9857:9WNN5 nidx=null]
Duosnemertes marmorata
 - Duosnemertes marmorata sensu (Bürger, 1895) [ACCEPTED SPECIES 9854:8VSJ2 nidx=null]
 + Duosnemertes marmorata [ACCEPTED SPECIES 9857:9X2G3 nidx=null]
Echiniscus bigranulatus
 - Echiniscus bigranulatus Richters, 1908 [ACCEPTED SPECIES 9854:38FXD nidx=null]
 + Echiniscus bigranulatus Richters, 1907 [SYNONYM SPECIES 9857:9WNNF nidx=null parent=9WS5Y]
Echiniscus elegans
 - Echiniscus elegans Richters, 1906 [ACCEPTED SPECIES 9854:38FYD nidx=null]
 + Echiniscus elegans Richters, 1907 [SYNONYM SPECIES 9857:9WNNH nidx=null parent=9X2VH]
Echiniscus marcusi
 - Echiniscus marcusi Pilato, Claxton & Binda, 1990 [ACCEPTED SPECIES 9854:38FZG nidx=null]
 + Echiniscus marcusi Pilato, Claxton & Binda, 1989 [ACCEPTED SPECIES 9857:9WNNN nidx=null]
Echiniscus markezi
 - Echiniscus markezi Mihelcic, 1971 [ACCEPTED SPECIES 9854:38FZL nidx=null]
 + Echiniscus markezi Mihelcic, 1972 [SYNONYM SPECIES 9857:9WNNP nidx=null parent=9X2VZ]
Echonitor albumenoidea
 - Echonitor albumenoidea (Cox, 1868) [SYNONYM SPECIES 9854:38MNK nidx=null parent=38MNJ]
 + Echonitor albumenoidea (J. C. Cox, 1868) [SYNONYM SPECIES 9857:9WNNZ nidx=null parent=9WNNY]
Echonitor albumenoideus
 - Echonitor albumenoideus (Cox, 1868) [ACCEPTED SPECIES 9854:38MNJ nidx=null]
 + Echonitor albumenoideus (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WNNY nidx=null]
Echotrida strangeoides
 - Echotrida strangeoides (Cox, 1864) [ACCEPTED SPECIES 9854:38MNR nidx=null]
 + Echotrida strangeoides (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WNP2 nidx=null]
Eclogavena coxeni
 - Eclogavena coxeni (Cox, 1873) [ACCEPTED SPECIES 9854:6DWLG nidx=null]
 + Eclogavena coxeni (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WNP3 nidx=null]
Eclogavena coxeni coxeni
 - Eclogavena coxeni coxeni (Cox, 1873) [SYNONYM SUBSPECIES 9854:5H2PG nidx=null parent=6DWLG]
 + Eclogavena coxeni coxeni (J. C. Cox, 1873) [SYNONYM SUBSPECIES 9857:9WR8J nidx=null parent=9WNP3]
Edgaria cingulata
 - Edgaria cingulata Cox, 1939 [SYNONYM SPECIES 9854:7R62R nidx=null parent=7RV8C]
 + Edgaria cingulata L. R. Cox, 1939 [SYNONYM SPECIES 9857:9WNP4 nidx=null parent=9WPGD]
Edgaria rukwaensis
 - Edgaria rukwaensis Cox, 1939 [SYNONYM SPECIES 9854:7R62T nidx=null parent=7RV8C]
 + Edgaria rukwaensis L. R. Cox, 1939 [SYNONYM SPECIES 9857:9WNP5 nidx=null parent=9WPGD]
Edgaria stockleyi
 - Edgaria stockleyi Cox, 1939 [SYNONYM SPECIES 9854:7R62V nidx=null parent=7RV8D]
 + Edgaria stockleyi L. R. Cox, 1939 [SYNONYM SPECIES 9857:9WNP6 nidx=null parent=9WPGF]
Egilomen cochlidium
 - Egilomen cochlidium (Cox, 1868) [ACCEPTED SPECIES 9854:6DYWY nidx=null]
 + Egilomen cochlidium (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WNP8 nidx=null]
Egilomen pexa
 - Egilomen pexa (Cox, 1868) [SYNONYM SPECIES 9854:8M3ZL nidx=null parent=36T8K]
 + Egilomen pexa (J. C. Cox, 1868) [SYNONYM SPECIES 9857:9WPDB nidx=null parent=9WNLK]
Elasmias wakefieldiae
 - Elasmias wakefieldiae (Cox, 1868) [ACCEPTED SPECIES 9854:394L4 nidx=null]
 + Elasmias wakefieldiae (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WNPB nidx=null]
Eleutherodactylus johnstonei
 - Eleutherodactylus johnstonei Barbour, 1914 [ACCEPTED SPECIES 9854:9G54W nidx=null]
 + Eleutherodactylus johnstonei Barbour, 1914 [ACCEPTED SPECIES 9857:9WPF7 nidx=null]
Elsothera brazieri
 - Elsothera brazieri (Cox, 1868) [ACCEPTED SPECIES 9854:6F6J6 nidx=null]
 + Elsothera brazieri (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WNPK nidx=null]
Elsothera funerea
 - Elsothera funerea (Cox, 1868) [ACCEPTED SPECIES 9854:6F6J9 nidx=null]
 + Elsothera funerea (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WNPL nidx=null]
Elsothera nautilodea
 - Elsothera nautilodea (Cox, 1866) [SYNONYM SPECIES 9854:39DB6 nidx=null parent=39DB7]
 + Elsothera nautilodea (J. C. Cox, 1866) [SYNONYM SPECIES 9857:9WNPM nidx=null parent=9WNPN]
Elsothera nautiloidea
 - Elsothera nautiloidea (Cox, 1866) [ACCEPTED SPECIES 9854:39DB7 nidx=null]
 + Elsothera nautiloidea (J. C. Cox, 1866) [ACCEPTED SPECIES 9857:9WNPN nidx=null]
Enchytraeus issykkulensis
 - Enchytraeus issykkulensis Hrabĕ, 1934 [ACCEPTED SPECIES 9854:39NXM nidx=null]
 + Enchytraeus issykkulensis Hrabĕ, 1935 [ACCEPTED SPECIES 9857:9WNPQ nidx=null]
Entomoconchacea
 - Entomoconchacea Sylvester-Bradley, 1953 [ACCEPTED SUPERFAMILY 9854:85GDH nidx=null]
 + Entomoconchacea [ACCEPTED SUPERFAMILY 9857:9WLLW nidx=null]
Entomoda salmonea
 - Entomoda salmonea Lamarck, 1818 [SYNONYM SPECIES 9854:7VWTX nidx=null parent=6XD8S]
 + Entomoda salmonea Lamarck, 1818 [SYNONYM SPECIES 9857:6FGCJ nidx=null parent=6XD8S]
Eomiodon
 - Eomiodon Cox, 1935 [ACCEPTED GENUS 9854:8FYPX nidx=null]
 + Eomiodon L. R. Cox, 1935 [ACCEPTED GENUS 9857:9WSFJ nidx=null]
Eomiodon (Africomiodon) cutleri
 - Eomiodon (Africomiodon) cutleri Cox, 1965 [SYNONYM SPECIES 9854:8HB4T nidx=null parent=8H9VN]
 + Eomiodon (Africomiodon) cutleri L. R. Cox, 1965 [SYNONYM SPECIES 9857:9WTJT nidx=null parent=9WTJV]
Eomiodon cutleri
 - Eomiodon cutleri Cox, 1965 [ACCEPTED SPECIES 9854:8H9VN nidx=null]
 + Eomiodon cutleri L. R. Cox, 1965 [ACCEPTED SPECIES 9857:9WTJV nidx=null]
Eomiodon dinosaurianum
 - Eomiodon dinosaurianum Cox, 1965 [ACCEPTED SPECIES 9854:9GZLK nidx=null]
 + Eomiodon dinosaurianum L. R. Cox, 1965 [ACCEPTED SPECIES 9857:9WXCC nidx=null]
Eomiodon indicus
 - Eomiodon indicus Cox, 1935 [ACCEPTED SPECIES 9854:8H9RF nidx=null]
 + Eomiodon indicus L. R. Cox, 1935 [ACCEPTED SPECIES 9857:9WTJW nidx=null]
Eomiodon namgaruensis
 - Eomiodon namgaruensis Cox, 1965 [ACCEPTED SPECIES 9854:9GZM4 nidx=null]
 + Eomiodon namgaruensis L. R. Cox, 1965 [ACCEPTED SPECIES 9857:9WXCG nidx=null]
Eomiodon nortonensis
 - Eomiodon nortonensis (Cox, 1944) [ACCEPTED SPECIES 9854:9H45W nidx=null]
 + Eomiodon nortonensis (L. R. Cox, 1944) [ACCEPTED SPECIES 9857:9WZ3K nidx=null]
Eomiodon tanganyicensis
 - Eomiodon tanganyicensis Cox, 1965 [ACCEPTED SPECIES 9854:9GZMR nidx=null]
 + Eomiodon tanganyicensis L. R. Cox, 1965 [ACCEPTED SPECIES 9857:9WXCJ nidx=null]
Eopseuma phyllotrapezia
 - Eopseuma phyllotrapezia [SYNONYM SPECIES 9854:6FL98 nidx=null parent=8TNPT]
 + Eopseuma phyllotrapezia [sic] [SYNONYM SPECIES 9857:9WNQ8 nidx=null parent=8TNPT]
Eoschizodus
 - Eoschizodus Cox, 1951 [ACCEPTED GENUS 9854:7P3HT nidx=null]
 + Eoschizodus L. R. Cox, 1951 [ACCEPTED GENUS 9857:9WM3X nidx=null]
Epalzeorhynchos kalopterus
 - Epalzeorhynchos kalopterus (Bleeker, 1850) [ACCEPTED SPECIES 9854:9HDKW nidx=null]
 + Epalzeorhynchos kalopterus (Bleeker, 1850) [ACCEPTED SPECIES 9857:9WNQB nidx=null]
Epiglypta howeinsulae
 - Epiglypta howeinsulae (Cox, 1873) [ACCEPTED SPECIES 9854:6G5HN nidx=null]
 + Epiglypta howeinsulae (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WNQD nidx=null]
Etyus
 - Etyus Leach in Mantell, 1844 [ACCEPTED GENUS 9854:9HLPG nidx=null]
 + Etyus Leach in Mantell, 1822 [ACCEPTED GENUS 9857:9WVDR nidx=null]
Eucynorta amazonica
 - Eucynorta amazonica Piza Jr., 1938 [ACCEPTED SPECIES 9854:7W3X6 nidx=null]
 + Eucynorta amazonica Piza, 1938 [ACCEPTED SPECIES 9857:9WNZS nidx=null]
Eumecostylus hargravesi
 - Eumecostylus hargravesi (Cox, 1871) [ACCEPTED SPECIES 9854:3CD7B nidx=null]
 + Eumecostylus hargravesi (J. C. Cox, 1871) [ACCEPTED SPECIES 9857:9WNQW nidx=null]
Eumecostylus sanchristovalensis
 - Eumecostylus sanchristovalensis (Cox, 1870) [ACCEPTED SPECIES 9854:6H8PD nidx=null]
 + Eumecostylus sanchristovalensis (J. C. Cox, 1870) [ACCEPTED SPECIES 9857:9WNQX nidx=null]
Eumecostylus scottii
 - Eumecostylus scottii (Cox, 1873) [ACCEPTED SPECIES 9854:3CD7F nidx=null]
 + Eumecostylus scottii (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WNQY nidx=null]
Eunerinea
 - Eunerinea Cox, 1949 [ACCEPTED GENUS 9854:9F7YS nidx=null]
 + Eunerinea L. R. Cox, 1949 [ACCEPTED GENUS 9857:9WVDS nidx=null]
Euphyodesmus vector
 - Euphyodesmus vector Chamberlin, 1941 [SYNONYM SPECIES 9854:9K2PZ nidx=null parent=354BV]
 + Euphyodesmus vector Chamberlin, 1941 [SYNONYM SPECIES 9857:9WNR3 nidx=null parent=354BV]
Eupoecilaema megaypsilon
 - Eupoecilaema megaypsilon Piza, 1938 [ACCEPTED SPECIES 9854:7W56L nidx=null]
 + Eupoecilaema megaypsilon Piza Jr., 1938 [ACCEPTED SPECIES 9857:9WNZV nidx=null]
Eupolia brocki
 - Eupolia brocki ? [SYNONYM SPECIES 9854:9K2QC nidx=null parent=68D67]
 + Eupolia brocki ? [SYNONYM SPECIES 9857:9WNR4 nidx=null parent=68D67]
Eupolia hemprichi
 - Eupolia hemprichi ? [SYNONYM SPECIES 9854:9K2QD nidx=null parent=68D67]
 + Eupolia hemprichi ? [SYNONYM SPECIES 9857:9WNR5 nidx=null parent=68D67]
Eupolia quinquelineata
 - Eupolia quinquelineata ? [SYNONYM SPECIES 9854:9K2QF nidx=null parent=68D5Y]
 + Eupolia quinquelineata ? [SYNONYM SPECIES 9857:9WNR6 nidx=null parent=68D5Y]
Eupsammia stimpsonii
 - Eupsammia stimpsonii Verrill, 1865 [SYNONYM SPECIES 9854:6HDW9 nidx=null parent=KG44]
 + Eupsammia stimpsonii Verrill, 1866 [SYNONYM SPECIES 9857:9WNR7 nidx=null parent=9WMYX]
Eupterix
 - Eupterix Fieber, 1866 [SYNONYM GENUS 9854:8KHNY nidx=null parent=8JMNK]
 + Eupterix Curtis, 1831 [SYNONYM GENUS 9857:9WSFN nidx=null parent=8JMNK]
Eupteryx kusminae
 - Eupteryx kusminae Sidorskii, 1939 [SYNONYM SPECIES 9854:6HDFT nidx=null parent=BBDN]
 + Eupteryx kusminae Sidorskii, 1937 [SYNONYM SPECIES 9857:9WPNN nidx=null parent=BBDN]
Eupteryx semipunctata
 - Eupteryx semipunctata Puton, 1875 [SYNONYM SPECIES 9854:8J54C nidx=null parent=3CYQD]
 + Eupteryx semipunctata (Fieber, 1872) [SYNONYM SPECIES 9857:9WPNR nidx=null parent=3CYQD]
Eurychilinidae
 - Eurychilinidae [ACCEPTED FAMILY 9854:8586G nidx=null]
 + Eurychilinidae Ulrich & Bassler, 1923 [ACCEPTED FAMILY 9857:9WLMM nidx=null]
Eurytoma terebinthi
 - Eurytoma terebinthi Rondani, 1877 [ACCEPTED SPECIES 9854:9GQK8 nidx=null]
 + Eurytoma terebinthi Rondani, 1877 [ACCEPTED SPECIES 9857:9WPR7 nidx=null]
Eurytrachia mucosa
 - Eurytrachia mucosa (Cox, 1868) [SYNONYM SPECIES 9854:6HFP5 nidx=null parent=9CCCD]
 + Eurytrachia mucosa (L. R. Cox, 1868) [SYNONYM SPECIES 9857:9WNR8 nidx=null parent=9CCCD]
Eurytrochus concinnus
 - Eurytrochus concinnus (Pilsbry, 1889) [ACCEPTED SPECIES 9854:6HFPW nidx=null]
 + Eurytrochus concinnus (Pilsbry, 1890) [ACCEPTED SPECIES 9857:9WNR9 nidx=null]
Eusarcus guimaraensi
 - Eusarcus guimaraensi Soares, 1945 [SYNONYM SPECIES 9854:7W5RM nidx=null parent=7W5RQ]
 + Eusarcus guimaraensi Kury, 2003 [SYNONYM SPECIES 9857:9WNZW nidx=null parent=7W5RQ]
Eusarcus sulcatus
 - Eusarcus sulcatus (Piza, 1940) [ACCEPTED SPECIES 9854:7W5S8 nidx=null]
 + Eusarcus sulcatus (Piza Jr., 1940) [ACCEPTED SPECIES 9857:9WNZY nidx=null]
Euscelis maculipennis
 - Euscelis maculipennis DeLong & Davidson, 1934 [SYNONYM SPECIES 9854:8T4KR nidx=null parent=3D8QS]
 + Euscelis maculipennis (DeLong & Caldwell, 1937) [SYNONYM SPECIES 9857:9WSHM nidx=null parent=3D8QS]
Euteratocephalus palustris
 - Euteratocephalus palustris (de Man, 1880) Andrássy, 1968 [ACCEPTED SPECIES 9854:888VM nidx=null]
 + Euteratocephalus palustris (de Man, 1880) Andrássy, 1958 [ACCEPTED SPECIES 9857:9WNRB nidx=null]
Excellaoma melbournensis
 - Excellaoma melbournensis (Cox, 1868) [ACCEPTED SPECIES 9854:3DJTT nidx=null]
 + Excellaoma melbournensis (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WNRM nidx=null]
Excellaoma retipora
 - Excellaoma retipora (Cox, 1867) [ACCEPTED SPECIES 9854:3DJTX nidx=null]
 + Excellaoma retipora (J. C. Cox, 1867) [ACCEPTED SPECIES 9857:9WNRN nidx=null]
Falcaustra piscicola
 - Falcaustra piscicola (von Linstow, 1907) Campana-Rouget, 1961 [ACCEPTED SPECIES 9854:99HX4 nidx=null]
 + Falcaustra piscicola (von Linstow, 1907) Inglis, 1959 [ACCEPTED SPECIES 9857:9WNSN nidx=null]
Fastosarion brazieri
 - Fastosarion brazieri (Cox, 1873) [ACCEPTED SPECIES 9854:3DVW7 nidx=null]
 + Fastosarion brazieri (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WNSS nidx=null]
Fastosarion superba
 - Fastosarion superba (Cox, 1871) [SYNONYM SPECIES 9854:7RBS2 nidx=null parent=3DVWN]
 + Fastosarion superba (J. C. Cox, 1871) [SYNONYM SPECIES 9857:9WNST nidx=null parent=9WNSV]
Fastosarion superbus
 - Fastosarion superbus (Cox, 1871) [ACCEPTED SPECIES 9854:3DVWN nidx=null]
 + Fastosarion superbus (J. C. Cox, 1871) [ACCEPTED SPECIES 9857:9WNSV nidx=null]
Figuladra challisi
 - Figuladra challisi (Cox, 1873) [ACCEPTED SPECIES 9854:6HYVZ nidx=null]
 + Figuladra challisi (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WNSX nidx=null]
Fuscoscala planicosta
 - Fuscoscala planicosta (Ant. Bivona, 1832) [SYNONYM SPECIES 9854:7RCP8 nidx=null parent=6G949]
 + Fuscoscala planicosta (Bivona e Bernardi, 1832) [SYNONYM SPECIES 9857:9WTK9 nidx=null parent=6G949]
Fusiturris similis
 - Fusiturris similis (Ant. Bivona, 1838) [ACCEPTED SPECIES 9854:9G4TL nidx=null]
 + Fusiturris similis (Bivona, 1838) [ACCEPTED SPECIES 9857:9WNTG nidx=null]
Fusiturris undatiruga
 - Fusiturris undatiruga (Ant. Bivona, 1838) [ACCEPTED SPECIES 9854:9G4TM nidx=null]
 + Fusiturris undatiruga (Bivona e Bernardi, 1838) [ACCEPTED SPECIES 9857:9WNTH nidx=null]
Futasujinus fraternellus
 - Futasujinus fraternellus (Baker, 1926) [SYNONYM SPECIES 9854:8RKS2 nidx=null parent=36JZF]
 + Futasujinus fraternellus (Baker, 1925) [SYNONYM SPECIES 9857:9WTKB nidx=null parent=9WPBL]
Galadistes expeditionis
 - Galadistes expeditionis (Cox, 1868) [ACCEPTED SPECIES 9854:3F2BX nidx=null]
 + Galadistes expeditionis (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WNTM nidx=null]
Galadistes marcescens
 - Galadistes marcescens (Cox, 1868) [ACCEPTED SPECIES 9854:3F2C2 nidx=null]
 + Galadistes marcescens (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WNTN nidx=null]
Galathowenia pygidialis
 - Galathowenia pygidialis (Harman, 1960) [ACCEPTED SPECIES 9854:3F2S9 nidx=null]
 + Galathowenia pygidialis (Hartman, 1960) [ACCEPTED SPECIES 9857:9WNF6 nidx=null]
Gari gari
 - Gari gari Bertin, 1880 [SYNONYM SPECIES 9854:3FB7P nidx=null parent=3FB9D]
 + Gari gari (Linnaeus, 1758) [SYNONYM SPECIES 9857:9WNTY nidx=null parent=3FB9D]
Gastrochaena grandis
 - Gastrochaena grandis Dunker, 1882 [SYNONYM SPECIES 9854:3FD52 nidx=null parent=3FD4N]
 + Gastrochaena grandis (Deshayes, 1855) [SYNONYM SPECIES 9857:9WNV3 nidx=null parent=3FD4N]
Gastrocopta (Albinula) kennardi
 - Gastrocopta (Albinula) kennardi Cox, 1925 [SYNONYM SPECIES 9854:7RDGW nidx=null parent=7RDKF]
 + Gastrocopta (Albinula) kennardi L. R. Cox, 1925 [SYNONYM SPECIES 9857:9WNV4 nidx=null parent=9WNV5]
Gastrocopta (Sinalbinula) matura
 - Gastrocopta (Sinalbinula) matura Cox, 1925 [SYNONYM SPECIES 9854:7RDHY nidx=null parent=7RDKJ]
 + Gastrocopta (Sinalbinula) matura L. R. Cox, 1925 [SYNONYM SPECIES 9857:9WNV6 nidx=null parent=9WNV7]
Gastrocopta kennardi
 - Gastrocopta kennardi Cox, 1925 [ACCEPTED SPECIES 9854:7RDKF nidx=null]
 + Gastrocopta kennardi L. R. Cox, 1925 [ACCEPTED SPECIES 9857:9WNV5 nidx=null]
Gastrocopta margaretae
 - Gastrocopta margaretae (Cox, 1868) [ACCEPTED SPECIES 9854:3FDDF nidx=null]
 + Gastrocopta margaretae (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WNV8 nidx=null]
Gastrocopta matura
 - Gastrocopta matura Cox, 1925 [ACCEPTED SPECIES 9854:7RDKJ nidx=null]
 + Gastrocopta matura L. R. Cox, 1925 [ACCEPTED SPECIES 9857:9WNV7 nidx=null]
Geaya jamaicana
 - Geaya jamaicana Roewer, 1953 [ACCEPTED SPECIES 9854:7W9KC nidx=null]
 + Geaya jamaicana Roewer, 1910 [ACCEPTED SPECIES 9857:9WNZZ nidx=null]
Geaya maculatipes
 - Geaya maculatipes (Roewer, 1916) [ACCEPTED SPECIES 9854:7W9KF nidx=null]
 + Geaya maculatipes (Roewer, 1917) [ACCEPTED SPECIES 9857:9WP22 nidx=null]
Germalna
 - Germalna Kolenati, 1857 [SYNONYM GENUS 9854:8JL7J nidx=null parent=8HM5V]
 + Germalna Boulard, 2006 [SYNONYM GENUS 9857:9WSFR nidx=null parent=8JL7K]
Gervillaria
 - Gervillaria Cox, 1954 [ACCEPTED GENUS 9854:9JMLJ nidx=null]
 + Gervillaria L. R. Cox, 1955 [ACCEPTED GENUS 9857:9WM6Z nidx=null]
Gibbula concinna
 - Gibbula concinna Pilsbry, 1889 [SYNONYM SPECIES 9854:3FZJY nidx=null parent=6HFPW]
 + Gibbula concinna Pilsbry, 1890 [SYNONYM SPECIES 9857:9WNVK nidx=null parent=9WNR9]
Globivenus orientalis
 - Globivenus orientalis (Cox, 1930) [ACCEPTED SPECIES 9854:6KJBH nidx=null]
 + Globivenus orientalis (L. R. Cox, 1930) [ACCEPTED SPECIES 9857:9WNVV nidx=null]
Globobulimina auriculata
 - Globobulimina auriculata (Bailey, 1894) [ACCEPTED SPECIES 9854:6KJCJ nidx=null]
 + Globobulimina auriculata (Bailey, 1851) [ACCEPTED SPECIES 9857:9WNVW nidx=null]
Gloreugenia coxeni
 - Gloreugenia coxeni (Cox, 1871) [ACCEPTED SPECIES 9854:3GD7Q nidx=null]
 + Gloreugenia coxeni (J. C. Cox, 1871) [ACCEPTED SPECIES 9857:9WNW7 nidx=null]
Glossodoris xishaensis
 - Glossodoris xishaensis Lin, 1975 [ACCEPTED SPECIES 9854:3GDMZ nidx=null]
 + Glossodoris xishaensis G.-Y. Lin, 1975 [ACCEPTED SPECIES 9857:9WNW8 nidx=null]
Gnathonemus petersii
 - Gnathonemus petersii (Günther, 1862) [ACCEPTED SPECIES 9854:8YX9Z nidx=null]
 + Gnathonemus petersii (Günther, 1862) [ACCEPTED SPECIES 9857:9WNWD nidx=null]
Goniocyclops alter
 - Goniocyclops alter Kiefer, 1954 [ACCEPTED SPECIES 9854:3GWHM nidx=null]
 + Goniocyclops alter Kiefer, 1955 [ACCEPTED SPECIES 9857:9WNWR nidx=null]
Gracilobenedenia kuremibai
 - Gracilobenedenia kuremibai Nitta, 1921 [ACCEPTED SPECIES 9854:9GVXT nidx=null]
 + Gracilobenedenia kuremibai Nitta, 2021 [ACCEPTED SPECIES 9857:9WSKN nidx=null]
Greenidea (Metagreenidea) brideliae
 - Greenidea (Metagreenidea) brideliae [SYNONYM SPECIES 9854:9K7M2 nidx=null parent=6L4Y2]
 + Greenidea (Metagreenidea) brideliae [SYNONYM SPECIES 9857:9WPZ4 nidx=null parent=6L4Y2]
Gymnarion grandis
 - Gymnarion grandis (L. Pfeiffer, 1849) [ACCEPTED SPECIES 9854:84WWL nidx=null]
 + Gymnarion grandis (H. Beck, 1838) [ACCEPTED SPECIES 9857:9WTKH nidx=null]
Gyndulus nasutus
 - Gyndulus nasutus (Piza Jr., 1938) [ACCEPTED SPECIES 9854:7WG2V nidx=null]
 + Gyndulus nasutus (Piza, 1938) [ACCEPTED SPECIES 9857:9WP27 nidx=null]
Gyrocochlea vinitincta
 - Gyrocochlea vinitincta (Cox, 1868) [ACCEPTED SPECIES 9854:3HYW8 nidx=null]
 + Gyrocochlea vinitincta (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WNXH nidx=null]
Haastina haastiana
 - Haastina haastiana (Wilckens, 1918) [ACCEPTED SPECIES 9854:3J3KV nidx=null]
 + Haastina haastiana (Wilckens, 1927) [ACCEPTED SPECIES 9857:9WNXN nidx=null]
Habrodesmus uganonus
 - Habrodesmus uganonus [ACCEPTED SPECIES 9854:3J568 nidx=null]
 + Habrodesmus uganonus (Attems, 1944) [SYNONYM SPECIES 9857:9WNXP nidx=null parent=65V7T]
Hadra barneyi
 - Hadra barneyi (Cox, 1873) [ACCEPTED SPECIES 9854:3J6RT nidx=null]
 + Hadra barneyi (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WNXQ nidx=null]
Hadra blomfieldi
 - Hadra blomfieldi (Cox, 1864) [SYNONYM SPECIES 9854:7RGY4 nidx=null parent=4YS3X]
 + Hadra blomfieldi (J. C. Cox, 1864) [SYNONYM SPECIES 9857:9WTKJ nidx=null parent=9WQQT]
Hadra rockhamptonensis
 - Hadra rockhamptonensis (Cox, 1873) [SYNONYM SPECIES 9854:7RGYD nidx=null parent=4YS46]
 + Hadra rockhamptonensis (J. C. Cox, 1873) [SYNONYM SPECIES 9857:9WTKK nidx=null parent=9WQQX]
Halicyclops troglodytes
 - Halicyclops troglodytes Kiefer, 1954 [ACCEPTED SPECIES 9854:3JDHB nidx=null]
 + Halicyclops troglodytes Kiefer, 1955 [ACCEPTED SPECIES 9857:9WNXX nidx=null]
Haliotis brazieri f. hargravesi
 - Haliotis brazieri f. hargravesi Cox, 1869 [SYNONYM FORM 9854:5SKWC nidx=null parent=3JDWD]
 + Haliotis brazieri f. hargravesi J. C. Cox, 1869 [SYNONYM FORM 9857:9WRMP nidx=null parent=3JDWD]
Haliotis hargravesi
 - Haliotis hargravesi Cox, 1869 [SYNONYM SPECIES 9854:3JDXY nidx=null parent=3JDWD]
 + Haliotis hargravesi J. C. Cox, 1869 [SYNONYM SPECIES 9857:9WNXY nidx=null parent=3JDWD]
Halocypridina
 - Halocypridina Dana, 1853 [ACCEPTED SUBORDER 9854:84JRY nidx=null]
 + Halocypridina Skogsberg, 1920 [ACCEPTED SUBORDER 9857:9WLLR nidx=null]
Haplocyclops pauliana
 - Haplocyclops pauliana Kiefer, 1954 [ACCEPTED SPECIES 9854:3JMCS nidx=null]
 + Haplocyclops pauliana Kiefer, 1955 [ACCEPTED SPECIES 9857:9WNY8 nidx=null]
Hedleya
 - Hedleya Cox, 1892 [ACCEPTED GENUS 9854:7P4VZ nidx=null]
 + Hedleya J. C. Cox, 1892 [ACCEPTED GENUS 9857:9WM7Z nidx=null]
Hedleya macleayi
 - Hedleya macleayi Cox, 1892 [ACCEPTED SPECIES 9854:3JZBM nidx=null]
 + Hedleya macleayi J. C. Cox, 1892 [ACCEPTED SPECIES 9857:9WNZJ nidx=null]
Helicarion brazieri
 - Helicarion brazieri Cox, 1873 [SYNONYM SPECIES 9854:7RHPR nidx=null parent=3DVW7]
 + Helicarion brazieri J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP23 nidx=null parent=9WNSS]
Helicarion hilli
 - Helicarion hilli Cox, 1873 [SYNONYM SPECIES 9854:3K67L nidx=null parent=3MRGB]
 + Helicarion hilli J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP24 nidx=null parent=9WPC6]
Helicarion mastersi
 - Helicarion mastersi (Cox, 1868) [ACCEPTED SPECIES 9854:3K67S nidx=null]
 + Helicarion mastersi (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WP25 nidx=null]
Helicina diversicolor
 - Helicina diversicolor Cox, 1866 [SYNONYM SPECIES 9854:6LJD9 nidx=null parent=4KCBK]
 + Helicina diversicolor J. C. Cox, 1866 [SYNONYM SPECIES 9857:9WP34 nidx=null parent=4KCBK]
Helicina gladstonensis
 - Helicina gladstonensis Cox, 1864 [SYNONYM SPECIES 9854:3K7R9 nidx=null parent=4KCBP]
 + Helicina gladstonensis J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP35 nidx=null parent=9WQCL]
Helicina jana
 - Helicina jana Cox, 1872 [SYNONYM SPECIES 9854:3K7RP nidx=null parent=4KCBR]
 + Helicina jana J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WP36 nidx=null parent=9WQCM]
Helicina lizardensis
 - Helicina lizardensis Cox, 1868 [SYNONYM SPECIES 9854:7RHZ3 nidx=null parent=4KCBQ]
 + Helicina lizardensis J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WTKQ nidx=null parent=4KCBQ]
Helicostyla (Crystallopsis) allasteri
 - Helicostyla (Crystallopsis) allasteri (Cox, 1873) [SYNONYM SPECIES 9854:8M3QJ nidx=null parent=3242C]
 + Helicostyla (Crystallopsis) allasteri (J. C. Cox, 1873) [SYNONYM SPECIES 9857:9WTKR nidx=null parent=9WNFH]
Helicostyla (Crystallopsis) balcombei
 - Helicostyla (Crystallopsis) balcombei (Cox, 1873) [SYNONYM SPECIES 9854:8M3F4 nidx=null parent=32425]
 + Helicostyla (Crystallopsis) balcombei (J. C. Cox, 1873) [SYNONYM SPECIES 9857:9WTKS nidx=null parent=9WNFD]
Helicostyla (Crystallopsis) hunteri
 - Helicostyla (Crystallopsis) hunteri (Cox, 1872) [SYNONYM SPECIES 9854:8M442 nidx=null parent=3242C]
 + Helicostyla (Crystallopsis) hunteri (J. C. Cox, 1872) [SYNONYM SPECIES 9857:9WTKT nidx=null parent=9WNFH]
Helicostyla (Papustyla) hindei
 - Helicostyla (Papustyla) hindei (Cox, 1886) [SYNONYM SPECIES 9854:8THS6 nidx=null parent=4CLVG]
 + Helicostyla (Papustyla) hindei (J. C. Cox, 1886) [SYNONYM SPECIES 9857:9WTKV nidx=null parent=9WQ59]
Helix (Camaena) barneyi
 - Helix (Camaena) barneyi Cox, 1873 [SYNONYM SPECIES 9854:6LKKC nidx=null parent=3J6RT]
 + Helix (Camaena) barneyi J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP4F nidx=null parent=9WNXQ]
Helix (Camaena) challisi
 - Helix (Camaena) challisi Cox, 1873 [SYNONYM SPECIES 9854:3KDF2 nidx=null parent=6HYVZ]
 + Helix (Camaena) challisi J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP4G nidx=null parent=9WNSX]
Helix (Camaena) praetermissi
 - Helix (Camaena) praetermissi Cox, 1868 [SYNONYM SPECIES 9854:7RJLM nidx=null parent=6HZ7Z]
 + Helix (Camaena) praetermissi J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WQ4R nidx=null parent=6HZ7Z]
Helix (Conulus) pampini
 - Helix (Conulus) pampini Cox, 1868 [SYNONYM SPECIES 9854:3KDGP nidx=null parent=5ZTGN]
 + Helix (Conulus) pampini J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP4J nidx=null parent=9WND2]
Helix (Corasia) balcombei
 - Helix (Corasia) balcombei Cox, 1873 [SYNONYM SPECIES 9854:6LKJW nidx=null parent=32425]
 + Helix (Corasia) balcombei J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP4K nidx=null parent=9WNFD]
Helix (Discus) cerealis
 - Helix (Discus) cerealis Cox, 1873 [SYNONYM SPECIES 9854:6LKK8 nidx=null parent=7CVZP]
 + Helix (Discus) cerealis J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP4P nidx=null parent=7CVZP]
Helix (Geotrochus) chapmani
 - Helix (Geotrochus) chapmani Cox, 1879 [SYNONYM SPECIES 9854:94H7P nidx=null parent=7RW3K]
 + Helix (Geotrochus) chapmani J. C. Cox, 1879 [SYNONYM SPECIES 9857:9WTL3 nidx=null parent=9WTM6]
Helix (Geotrochus) gelata
 - Helix (Geotrochus) gelata Cox, 1873 [SYNONYM SPECIES 9854:3KDJJ nidx=null parent=4CLP9]
 + Helix (Geotrochus) gelata J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP4R nidx=null parent=9WQ53]
Helix (Geotrochus) gurgustii
 - Helix (Geotrochus) gurgustii Cox, 1879 [SYNONYM SPECIES 9854:3KDJM nidx=null parent=4STYW]
 + Helix (Geotrochus) gurgustii J. C. Cox, 1879 [SYNONYM SPECIES 9857:9WP4T nidx=null parent=9WQKH]
Helix (Geotrochus) leucophaea
 - Helix (Geotrochus) leucophaea Cox, 1872 [SYNONYM SPECIES 9854:3KDJR nidx=null parent=3YTRJ]
 + Helix (Geotrochus) leucophaea J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WP4V nidx=null parent=3YTRJ]
Helix (Geotrochus) macfarlanei
 - Helix (Geotrochus) macfarlanei Cox, 1873 [SYNONYM SPECIES 9854:3KDJS nidx=null parent=3YTRG]
 + Helix (Geotrochus) macfarlanei J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP4W nidx=null parent=9WPMC]
Helix (Geotrochus) redempta
 - Helix (Geotrochus) redempta Cox, 1873 [SYNONYM SPECIES 9854:3KDJX nidx=null parent=4CLQM]
 + Helix (Geotrochus) redempta J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP4X nidx=null parent=9WQ4Z]
Helix (Hadra) derbyi
 - Helix (Hadra) derbyi Cox, 1892 [SYNONYM SPECIES 9854:3KDKJ nidx=null parent=7G7PM]
 + Helix (Hadra) derbyi J. C. Cox, 1892 [SYNONYM SPECIES 9857:9WP4Z nidx=null parent=9WR5N]
Helix (Hadra) oscarensis
 - Helix (Hadra) oscarensis Cox, 1892 [SYNONYM SPECIES 9854:3KDKS nidx=null parent=7FW2B]
 + Helix (Hadra) oscarensis J. C. Cox, 1892 [SYNONYM SPECIES 9857:9WP52 nidx=null parent=9WR5P]
Helix (Hadra) parsoni
 - Helix (Hadra) parsoni Cox, 1872 [SYNONYM SPECIES 9854:7RJWK nidx=null parent=7TVD4]
 + Helix (Hadra) parsoni J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WP53 nidx=null parent=7TVD4]
Helix acerra
 - Helix acerra J. Lewis, 1871 [SYNONYM SPECIES 9854:7RKFS nidx=null parent=7TL3D]
 + Helix acerra W. H. Benson, 1859 [SYNONYM SPECIES 9857:9WP5K nidx=null parent=7T3F4]
Helix albanensis
 - Helix albanensis Cox, 1868 [SYNONYM SPECIES 9854:7RKGZ nidx=null parent=4F6VC]
 + Helix albanensis J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WQ48 nidx=null parent=9WQ7V]
Helix albumenoidea
 - Helix albumenoidea Cox, 1868 [SYNONYM SPECIES 9854:3KDTP nidx=null parent=38MNJ]
 + Helix albumenoidea J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP5L nidx=null parent=9WNNY]
Helix alfredi
 - Helix alfredi Cox, 1871 [SYNONYM SPECIES 9854:3KDTQ nidx=null parent=3YTR2]
 + Helix alfredi J. C. Cox, 1871 [SYNONYM SPECIES 9857:9WP5M nidx=null parent=9WPMB]
Helix allasteri
 - Helix allasteri Cox, 1873 [SYNONYM SPECIES 9854:3KDTT nidx=null parent=3242C]
 + Helix allasteri J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP5N nidx=null parent=9WNFH]
Helix allecta
 - Helix allecta Cox, 1870 [SYNONYM SPECIES 9854:6LKL9 nidx=null parent=4XM5M]
 + Helix allecta J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WP5P nidx=null parent=9WQQ9]
Helix andersoni
 - Helix andersoni Cox, 1872 [SYNONYM SPECIES 9854:6LKMP nidx=null parent=9CC9J]
 + Helix andersoni J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WP5C nidx=null parent=9CC9J]
Helix antelata
 - Helix antelata Cox, 1870 [SYNONYM SPECIES 9854:6LKN4 nidx=null parent=6Q6WH]
 + Helix antelata J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WP5Q nidx=null parent=6Q6WH]
Helix ardua
 - Helix ardua Cox, 1870 [SYNONYM SPECIES 9854:6LKM9 nidx=null parent=6Q6WH]
 + Helix ardua J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WP5S nidx=null parent=6Q6WH]
Helix aridorum
 - Helix aridorum Cox, 1866 [SYNONYM SPECIES 9854:3KDV4 nidx=null parent=47BP6]
 + Helix aridorum J. C. Cox, 1866 [SYNONYM SPECIES 9857:9WP5T nidx=null parent=9WPXF]
Helix arthuriana
 - Helix arthuriana Cox, 1873 [SYNONYM SPECIES 9854:7RKNB nidx=null parent=4YS3V]
 + Helix arthuriana J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WQ49 nidx=null parent=9WQQS]
Helix assimilans
 - Helix assimilans Cox, 1864 [SYNONYM SPECIES 9854:3KDVD nidx=null parent=5V4M3]
 + Helix assimilans J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP5V nidx=null parent=9WMRC]
Helix bellengerensis
 - Helix bellengerensis Cox, 1871 [SYNONYM SPECIES 9854:3KDWK nidx=null parent=JW3R]
 + Helix bellengerensis J. C. Cox, 1871 [SYNONYM SPECIES 9857:9WP5W nidx=null parent=9WMY9]
Helix belli
 - Helix belli Cox, 1864 [SYNONYM SPECIES 9854:3KDWL nidx=null parent=6QS9W]
 + Helix belli J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP5X nidx=null parent=9WPL6]
Helix belmorei
 - Helix belmorei Cox, 1872 [SYNONYM SPECIES 9854:3KDWM nidx=null parent=597G3]
 + Helix belmorei J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WP5Y nidx=null parent=9WQYT]
Helix bitaeniata
 - Helix bitaeniata Cox, 1868 [SYNONYM SPECIES 9854:3KDX8 nidx=null parent=4XMKN]
 + Helix bitaeniata J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP5Z nidx=null parent=9WQQB]
Helix blackmani
 - Helix blackmani Cox, 1868 [SYNONYM SPECIES 9854:3KDX9 nidx=null parent=Q4ZR]
 + Helix blackmani J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP62 nidx=null parent=9WN6K]
Helix blomfieldi
 - Helix blomfieldi Cox, 1864 [SYNONYM SPECIES 9854:3KDXB nidx=null parent=4YS3X]
 + Helix blomfieldi J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP64 nidx=null parent=9WQQT]
Helix brazieri
 - Helix brazieri Cox, 1868 [SYNONYM SPECIES 9854:8MWPP nidx=null parent=6F6J6]
 + Helix brazieri J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP65 nidx=null parent=9WNPK]
Helix ceralis
 - Helix ceralis Cox, 1873 [SYNONYM SPECIES 9854:7RKXZ nidx=null parent=7CVZP]
 + Helix ceralis J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WTKZ nidx=null parent=7CVZP]
Helix cerata
 - Helix cerata Cox, 1868 [SYNONYM SPECIES 9854:3KDZQ nidx=null parent=LJ3C]
 + Helix cerata J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP66 nidx=null parent=LJ3C]
Helix cerea
 - Helix cerea Cox, 1864 [AMBIGUOUS_SYNONYM SPECIES 9854:3KDZR nidx=null parent=LJ3C]
 + Helix cerea J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP67 nidx=null parent=LJ3C]
Helix chancei
 - Helix chancei Cox, 1870 [SYNONYM SPECIES 9854:6LKNH nidx=null parent=6TNP5]
 + Helix chancei J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WP68 nidx=null parent=9WQ58]
Helix chapmani
 - Helix chapmani Cox, 1879 [SYNONYM SPECIES 9854:7RKYH nidx=null parent=7RW3K]
 + Helix chapmani J. C. Cox, 1879 [SYNONYM SPECIES 9857:9WTL2 nidx=null parent=9WTM6]
Helix circumcincta
 - Helix circumcincta Cox, 1868 [SYNONYM SPECIES 9854:6LKP2 nidx=null parent=73YSR]
 + Helix circumcincta J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP69 nidx=null parent=9WPXM]
Helix cochlidium
 - Helix cochlidium Cox, 1868 [SYNONYM SPECIES 9854:8NF96 nidx=null parent=6DYWY]
 + Helix cochlidium J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WQ4B nidx=null parent=9WNP8]
Helix conoidea
 - Helix conoidea Cox, 1864 [AMBIGUOUS_SYNONYM SPECIES 9854:6LKPQ nidx=null parent=3JZBX]
 + Helix conoidea J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP6D nidx=null parent=3JZBX]
Helix conscendens
 - Helix conscendens Cox, 1866 [SYNONYM SPECIES 9854:6LKPR nidx=null parent=4M2VK]
 + Helix conscendens J. C. Cox, 1866 [SYNONYM SPECIES 9857:9WP6F nidx=null parent=9WQDH]
Helix convicta
 - Helix convicta Cox, 1870 [SYNONYM SPECIES 9854:7RL49 nidx=null parent=4RYBQ]
 + Helix convicta J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WQ4C nidx=null parent=9WQK7]
Helix corticicola
 - Helix corticicola Cox, 1866 [SYNONYM SPECIES 9854:7RL52 nidx=null parent=47C59]
 + Helix corticicola J. C. Cox, 1866 [SYNONYM SPECIES 9857:9WQ4D nidx=null parent=9WPXH]
Helix coxeni
 - Helix coxeni Cox, 1871 [SYNONYM SPECIES 9854:6LMFG nidx=null parent=3GD7Q]
 + Helix coxeni J. C. Cox, 1871 [SYNONYM SPECIES 9857:9WP6G nidx=null parent=9WNW7]
Helix creedi
 - Helix creedi Cox, 1868 [SYNONYM SPECIES 9854:6LMFD nidx=null parent=GT27]
 + Helix creedi J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP6H nidx=null parent=9WMTG]
Helix croftoni
 - Helix croftoni Cox, 1872 [SYNONYM SPECIES 9854:6LMF9 nidx=null parent=LJ3C]
 + Helix croftoni J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WP6J nidx=null parent=LJ3C]
Helix crotali
 - Helix crotali Cox, 1864 [SYNONYM SPECIES 9854:8W9XD nidx=null parent=3DQJ6]
 + Helix crotali J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP6K nidx=null parent=3DQJ6]
Helix crustulum
 - Helix crustulum Cox, 1873 [SYNONYM SPECIES 9854:6LMF4 nidx=null parent=597G7]
 + Helix crustulum J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP6L nidx=null parent=9WQYV]
Helix diemenensis
 - Helix diemenensis Cox, 1868 [SYNONYM SPECIES 9854:6LMHF nidx=null parent=56N64]
 + Helix diemenensis J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP6N nidx=null parent=9WQX3]
Helix dryanderensis
 - Helix dryanderensis Cox, 1872 [SYNONYM SPECIES 9854:6LMGP nidx=null parent=48YNB]
 + Helix dryanderensis J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WP6Q nidx=null parent=9WQ22]
Helix duralensis
 - Helix duralensis Cox, 1868 [SYNONYM SPECIES 9854:6LMJ2 nidx=null parent=4LR3L]
 + Helix duralensis J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP6R nidx=null parent=9WQD5]
Helix edwardsi
 - Helix edwardsi Cox, 1868 [SYNONYM SPECIES 9854:6LMJP nidx=null parent=7G6VX]
 + Helix edwardsi J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP6S nidx=null parent=7G6VX]
Helix exagitans
 - Helix exagitans Cox, 1870 [SYNONYM SPECIES 9854:6LMKP nidx=null parent=6BMFB]
 + Helix exagitans J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WP6V nidx=null parent=9WNF5]
Helix exocarpi
 - Helix exocarpi Cox, 1868 [SYNONYM SPECIES 9854:6LML2 nidx=null parent=4LR3M]
 + Helix exocarpi J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP6W nidx=null parent=9WQD6]
Helix expeditionis
 - Helix expeditionis Cox, 1868 [SYNONYM SPECIES 9854:6LML3 nidx=null parent=3F2BX]
 + Helix expeditionis J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP6X nidx=null parent=9WNTM]
Helix fatigata
 - Helix fatigata Cox, 1873 [SYNONYM SPECIES 9854:6LMKK nidx=null parent=597G9]
 + Helix fatigata J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP6Y nidx=null parent=9WQYW]
Helix fenestrata
 - Helix fenestrata Cox, 1866 [AMBIGUOUS_SYNONYM SPECIES 9854:7RLDX nidx=null parent=3JZBX]
 + Helix fenestrata J. C. Cox, 1866 [SYNONYM SPECIES 9857:9WQ4F nidx=null parent=3JZBX]
Helix flosculus
 - Helix flosculus Cox, 1866 [SYNONYM SPECIES 9854:6LMK5 nidx=null parent=6WRRK]
 + Helix flosculus J. C. Cox, 1866 [SYNONYM SPECIES 9857:9WP72 nidx=null parent=9WQJK]
Helix forbesii
 - Helix forbesii Cox, 1864 [SYNONYM SPECIES 9854:6LMK7 nidx=null parent=LJ3C]
 + Helix forbesii J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP73 nidx=null parent=LJ3C]
Helix funerea
 - Helix funerea Cox, 1868 [SYNONYM SPECIES 9854:7RLGV nidx=null parent=6F6J9]
 + Helix funerea J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WQ4G nidx=null parent=9WNPL]
Helix gelata
 - Helix gelata Cox, 1873 [SYNONYM SPECIES 9854:6LML8 nidx=null parent=4CLP9]
 + Helix gelata J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP4S nidx=null parent=9WQ53]
Helix gratiosa
 - Helix gratiosa Cox, 1871 [SYNONYM SPECIES 9854:6LMBW nidx=null parent=LJ3F]
 + Helix gratiosa J. C. Cox, 1871 [SYNONYM SPECIES 9857:9WP76 nidx=null parent=LJ3F]
Helix greenhilli
 - Helix greenhilli Cox, 1866 [SYNONYM SPECIES 9854:6LMBX nidx=null parent=4C5JC]
 + Helix greenhilli J. C. Cox, 1866 [SYNONYM SPECIES 9857:9WP77 nidx=null parent=9WQ3W]
Helix guadalcanarensis
 - Helix guadalcanarensis Cox, 1872 [SYNONYM SPECIES 9854:8MWQJ nidx=null parent=4CLPD]
 + Helix guadalcanarensis J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WP78 nidx=null parent=9WQ54]
Helix hamiltoni
 - Helix hamiltoni Cox, 1868 [SYNONYM SPECIES 9854:7RLKT nidx=null parent=6ZK2C]
 + Helix hamiltoni J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP7B nidx=null parent=9WQRM]
Helix harriettae
 - Helix harriettae Cox, 1868 [SYNONYM SPECIES 9854:6LMBM nidx=null parent=67XH9]
 + Helix harriettae J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP7C nidx=null parent=9WMYD]
Helix helva
 - Helix helva Cox, 1870 [SYNONYM SPECIES 9854:6LMDG nidx=null parent=78SB8]
 + Helix helva J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WP7D nidx=null parent=9WQK4]
Helix howeinsulae
 - Helix howeinsulae Cox, 1873 [SYNONYM SPECIES 9854:6LMCL nidx=null parent=6G5HN]
 + Helix howeinsulae J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP7F nidx=null parent=9WNQD]
Helix hunteri
 - Helix hunteri Cox, 1872 [SYNONYM SPECIES 9854:6LLSV nidx=null parent=3242C]
 + Helix hunteri J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WP7G nidx=null parent=9WNFH]
Helix hystrix
 - Helix hystrix Cox, 1868 [AMBIGUOUS_SYNONYM SPECIES 9854:6LLSW nidx=null parent=44QVM]
 + Helix hystrix J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP7H nidx=null parent=9WPV2]
Helix incei multifasciata
 - Helix incei multifasciata Cox, 1864 [SYNONYM SUBSPECIES 9854:5HMXF nidx=null parent=52BN7]
 + Helix incei multifasciata J. C. Cox, 1864 [SYNONYM SUBSPECIES 9857:9WR9G nidx=null parent=52BN7]
Helix kempseyensis
 - Helix kempseyensis Cox, 1872 [SYNONYM SPECIES 9854:6LLTY nidx=null parent=6N8Z2]
 + Helix kempseyensis J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WP7K nidx=null parent=9WPDJ]
Helix kreffti
 - Helix kreffti Cox, 1864 [SYNONYM SPECIES 9854:6LM65 nidx=null parent=6VXCV]
 + Helix kreffti J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP7M nidx=null parent=9WQDN]
Helix lamproides
 - Helix lamproides Cox, 1868 [SYNONYM SPECIES 9854:6LM5G nidx=null parent=54YRQ]
 + Helix lamproides J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP7N nidx=null parent=9WQTD]
Helix leei
 - Helix leei Cox, 1873 [SYNONYM SPECIES 9854:7RLTV nidx=null parent=7R4H3]
 + Helix leei J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WTL6 nidx=null parent=9WTJN]
Helix legrandi
 - Helix legrandi Cox, 1868 [SYNONYM SPECIES 9854:6LM6X nidx=null parent=54YS3]
 + Helix legrandi J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP7P nidx=null parent=9WQTF]
Helix leichardti
 - Helix leichardti Cox, 1864 [SYNONYM SPECIES 9854:6LM79 nidx=null parent=52W6S]
 + Helix leichardti J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP7Q nidx=null parent=52W6S]
Helix leucocheilus
 - Helix leucocheilus Cox, 1868 [SYNONYM SPECIES 9854:6LM76 nidx=null parent=7FLFW]
 + Helix leucocheilus J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP7R nidx=null parent=9WR3Z]
Helix lirata
 - Helix lirata Cox, 1864 [SYNONYM SPECIES 9854:6LM6R nidx=null parent=6CFBT]
 + Helix lirata J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP7T nidx=null parent=9WNJP]
Helix luteofusca
 - Helix luteofusca Cox, 1868 [SYNONYM SPECIES 9854:6LLVT nidx=null parent=6BS5M]
 + Helix luteofusca J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP7W nidx=null parent=9WNFR]
Helix lyndhurstensis
 - Helix lyndhurstensis Cox, 1868 [SYNONYM SPECIES 9854:6LM85 nidx=null parent=7GF7W]
 + Helix lyndhurstensis J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP7X nidx=null parent=7GF7W]
Helix macgregori
 - Helix macgregori Cox, 1870 [SYNONYM SPECIES 9854:7RLXP nidx=null parent=7QTT6]
 + Helix macgregori J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WP7Y nidx=null parent=9WNDN]
Helix macleayi
 - Helix macleayi Cox, 1865 [SYNONYM SPECIES 9854:6LM87 nidx=null parent=LJ3H]
 + Helix macleayi J. C. Cox, 1865 [SYNONYM SPECIES 9857:9WP7Z nidx=null parent=9WMZL]
Helix macquariensis
 - Helix macquariensis Cox, 1872 [SYNONYM SPECIES 9854:6LLW8 nidx=null parent=44B92]
 + Helix macquariensis J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WP82 nidx=null parent=9WPTC]
Helix marcescens
 - Helix marcescens Cox, 1868 [SYNONYM SPECIES 9854:6LM7R nidx=null parent=3F2C2]
 + Helix marcescens J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP83 nidx=null parent=9WNTN]
Helix mariae
 - Helix mariae Cox, 1865 [SYNONYM SPECIES 9854:6LLVS nidx=null parent=7FLFW]
 + Helix mariae J. C. Cox, 1865 [SYNONYM SPECIES 9857:9WP84 nidx=null parent=9WR3Z]
Helix marmorata
 - Helix marmorata Cox, 1864 [AMBIGUOUS_SYNONYM SPECIES 9854:6LM7S nidx=null parent=73YSR]
 + Helix marmorata J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP85 nidx=null parent=9WPXM]
Helix mastersi
 - Helix mastersi Cox, 1864 [SYNONYM SPECIES 9854:6LM7M nidx=null parent=4LR3P]
 + Helix mastersi J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP86 nidx=null parent=9WQD7]
Helix melbournensis
 - Helix melbournensis Cox, 1868 [SYNONYM SPECIES 9854:6LM7D nidx=null parent=3DJTT]
 + Helix melbournensis J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP87 nidx=null parent=9WNRM]
Helix microcosmos
 - Helix microcosmos Cox, 1868 [SYNONYM SPECIES 9854:7RM22 nidx=null parent=6N8Z2]
 + Helix microcosmos J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WQ4H nidx=null parent=9WPDJ]
Helix microscopica
 - Helix microscopica Cox, 1864 [SYNONYM SPECIES 9854:7RM24 nidx=null parent=6N8Z2]
 + Helix microscopica J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP88 nidx=null parent=9WPDJ]
Helix millicentae
 - Helix millicentae Cox, 1871 [SYNONYM SPECIES 9854:6LLX2 nidx=null parent=4STYZ]
 + Helix millicentae J. C. Cox, 1871 [SYNONYM SPECIES 9857:9WP89 nidx=null parent=4STYZ]
Helix minima
 - Helix minima Cox, 1868 [SYNONYM SPECIES 9854:7RM2G nidx=null parent=3S86J]
 + Helix minima J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WQ4L nidx=null parent=3S86J]
Helix miser
 - Helix miser Cox, 1873 [SYNONYM SPECIES 9854:6LLWR nidx=null parent=4CLQ9]
 + Helix miser J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP8B nidx=null parent=4CLQ9]
Helix mitchellae
 - Helix mitchellae Cox, 1864 [SYNONYM SPECIES 9854:6LLX3 nidx=null parent=7BWJN]
 + Helix mitchellae J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP8C nidx=null parent=9WQWB]
Helix morti
 - Helix morti Cox, 1864 [SYNONYM SPECIES 9854:99MM9 nidx=null parent=9CBTJ]
 + Helix morti J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WQ4M nidx=null parent=9WXT7]
Helix mulgoae
 - Helix mulgoae Cox, 1868 [SYNONYM SPECIES 9854:7RM4D nidx=null parent=7T3P4]
 + Helix mulgoae J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP8D nidx=null parent=7T3P4]
Helix murphyi
 - Helix murphyi Cox, 1864 [SYNONYM SPECIES 9854:6LM8H nidx=null parent=47C5C]
 + Helix murphyi J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP8G nidx=null parent=9WPXJ]
Helix namoiensis
 - Helix namoiensis Cox, 1868 [SYNONYM SPECIES 9854:6LM8C nidx=null parent=424KK]
 + Helix namoiensis J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP8H nidx=null parent=424KK]
Helix nautiloidea
 - Helix nautiloidea Cox, 1866 [SYNONYM SPECIES 9854:6LLY7 nidx=null parent=39DB7]
 + Helix nautiloidea J. C. Cox, 1866 [SYNONYM SPECIES 9857:9WP8K nidx=null parent=9WNPN]
Helix novaegeorgiensis
 - Helix novaegeorgiensis Cox, 1870 [SYNONYM SPECIES 9854:6LM9Q nidx=null parent=3YTRK]
 + Helix novaegeorgiensis J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WP8L nidx=null parent=9WPMD]
Helix oconnellensis
 - Helix oconnellensis Cox, 1871 [SYNONYM SPECIES 9854:7RM79 nidx=null parent=4YS44]
 + Helix oconnellensis J. C. Cox, 1871 [SYNONYM SPECIES 9857:9WQ4N nidx=null parent=9WQQV]
Helix pachystyloides
 - Helix pachystyloides Cox, 1868 [SYNONYM SPECIES 9854:6LLYV nidx=null parent=7G6VX]
 + Helix pachystyloides J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP8M nidx=null parent=7G6VX]
Helix parramattensis
 - Helix parramattensis Cox, 1864 [SYNONYM SPECIES 9854:6LLYK nidx=null parent=3BXGX]
 + Helix parramattensis J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP8N nidx=null parent=3BXGX]
Helix patescens
 - Helix patescens Cox, 1870 [SYNONYM SPECIES 9854:6LLYG nidx=null parent=6WRRK]
 + Helix patescens J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WP8P nidx=null parent=9WQJK]
Helix penolensis
 - Helix penolensis Cox, 1868 [SYNONYM SPECIES 9854:7RMC7 nidx=null parent=3XGVS]
 + Helix penolensis J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WQ4P nidx=null parent=9WPLR]
Helix pexa
 - Helix pexa Cox, 1868 [SYNONYM SPECIES 9854:8M3SZ nidx=null parent=36T8K]
 + Helix pexa J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WQ4Q nidx=null parent=9WNLK]
Helix porteri
 - Helix porteri Cox, 1866 [SYNONYM SPECIES 9854:6LLM5 nidx=null parent=JW4F]
 + Helix porteri J. C. Cox, 1866 [SYNONYM SPECIES 9857:9WP8Q nidx=null parent=9WMYB]
Helix pudibunda
 - Helix pudibunda Cox, 1868 [SYNONYM SPECIES 9854:6LLL7 nidx=null parent=6RZ52]
 + Helix pudibunda J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP8R nidx=null parent=9WPXQ]
Helix quintalae
 - Helix quintalae Cox, 1870 [SYNONYM SPECIES 9854:6LLN3 nidx=null parent=45LQW]
 + Helix quintalae J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WP8S nidx=null parent=9WPVN]
Helix rainbirdi
 - Helix rainbirdi Cox, 1870 [SYNONYM SPECIES 9854:6LLMH nidx=null parent=3Y6KR]
 + Helix rainbirdi J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WP8T nidx=null parent=3Y6KR]
Helix ramsayi
 - Helix ramsayi Cox, 1868 [SYNONYM SPECIES 9854:6LLMC nidx=null parent=52W6W]
 + Helix ramsayi J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP8V nidx=null parent=9WQRY]
Helix rawnesleyi
 - Helix rawnesleyi Cox, 1873 [SYNONYM SPECIES 9854:7RMLS nidx=null parent=7T83N]
 + Helix rawnesleyi J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WQ4T nidx=null parent=9WT8C]
Helix retardata
 - Helix retardata Cox, 1870 [SYNONYM SPECIES 9854:6LLNT nidx=null parent=6T9G3]
 + Helix retardata J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WP8W nidx=null parent=9WQ36]
Helix retipora
 - Helix retipora Cox, 1867 [SYNONYM SPECIES 9854:6LLNP nidx=null parent=3DJTX]
 + Helix retipora J. C. Cox, 1867 [SYNONYM SPECIES 9857:9WP8X nidx=null parent=9WNRN]
Helix rockhamptonensis
 - Helix rockhamptonensis Cox, 1873 [SYNONYM SPECIES 9854:7RMND nidx=null parent=4YS46]
 + Helix rockhamptonensis J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WQ4V nidx=null parent=9WQQX]
Helix sardalabiata
 - Helix sardalabiata Cox, 1871 [SYNONYM SPECIES 9854:6LM23 nidx=null parent=7BR24]
 + Helix sardalabiata J. C. Cox, 1871 [SYNONYM SPECIES 9857:9WP8Y nidx=null parent=9WQTT]
Helix saturni
 - Helix saturni Cox, 1864 [SYNONYM SPECIES 9854:6LLQ4 nidx=null parent=6D7ZL]
 + Helix saturni J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP8Z nidx=null parent=9WNKS]
Helix scandens
 - Helix scandens Cox, 1872 [SYNONYM SPECIES 9854:6LLQ6 nidx=null parent=3QZ2W]
 + Helix scandens J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WP92 nidx=null parent=9WPFM]
Helix scotti
 - Helix scotti Cox, 1864 [SYNONYM SPECIES 9854:7RMRF nidx=null parent=7T3P6]
 + Helix scotti J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP93 nidx=null parent=7T3P6]
Helix sellersi
 - Helix sellersi Cox, 1872 [SYNONYM SPECIES 9854:6LLQW nidx=null parent=3YTRN]
 + Helix sellersi J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WP94 nidx=null parent=9WPMF]
Helix serena
 - Helix serena Cox, 1873 [SYNONYM SPECIES 9854:6LM2Y nidx=null parent=597HB]
 + Helix serena J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP95 nidx=null parent=9WQYY]
Helix spinei
 - Helix spinei Cox, 1868 [SYNONYM SPECIES 9854:6LM33 nidx=null parent=44QVM]
 + Helix spinei J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP96 nidx=null parent=9WPV2]
Helix splendescens
 - Helix splendescens Cox, 1866 [SYNONYM SPECIES 9854:6LM2K nidx=null parent=4CLQT]
 + Helix splendescens J. C. Cox, 1866 [SYNONYM SPECIES 9857:9WP97 nidx=null parent=9WQ57]
Helix strangeoides
 - Helix strangeoides Cox, 1864 [SYNONYM SPECIES 9854:6LM2D nidx=null parent=38MNR]
 + Helix strangeoides J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP99 nidx=null parent=9WNP2]
Helix stroudensis
 - Helix stroudensis Cox, 1864 [SYNONYM SPECIES 9854:6LM2B nidx=null parent=6BB3S]
 + Helix stroudensis J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP9B nidx=null parent=9WNDT]
Helix sydneyensis
 - Helix sydneyensis Cox, 1864 [SYNONYM SPECIES 9854:7RMYF nidx=null parent=4BDQK]
 + Helix sydneyensis J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP9C nidx=null parent=4BDQK]
Helix tasmaniae
 - Helix tasmaniae Cox, 1868 [SYNONYM SPECIES 9854:6LM3H nidx=null parent=54YR5]
 + Helix tasmaniae J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP9D nidx=null parent=9WQTC]
Helix thatcheri
 - Helix thatcheri Cox, 1870 [SYNONYM SPECIES 9854:6LLRB nidx=null parent=6HZ8F]
 + Helix thatcheri J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WP9F nidx=null parent=6HZ8F]
Helix turriculata
 - Helix turriculata Cox, 1868 [SYNONYM SPECIES 9854:7RN46 nidx=null parent=7T627]
 + Helix turriculata J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WQ4W nidx=null parent=7T627]
Helix umbraculorum
 - Helix umbraculorum Cox, 1864 [SYNONYM SPECIES 9854:6LNHN nidx=null parent=5ZTFB]
 + Helix umbraculorum J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WP9H nidx=null parent=5ZTFB]
Helix urarensis
 - Helix urarensis Cox, 1866 [SYNONYM SPECIES 9854:6LNHB nidx=null parent=44B94]
 + Helix urarensis J. C. Cox, 1866 [SYNONYM SPECIES 9857:9WP9J nidx=null parent=9WPTD]
Helix victoriae
 - Helix victoriae Cox, 1868 [SYNONYM SPECIES 9854:6LNHP nidx=null parent=69WH8]
 + Helix victoriae J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP9K nidx=null parent=9WN8V]
Helix vinitincta
 - Helix vinitincta Cox, 1868 [SYNONYM SPECIES 9854:3KF25 nidx=null parent=3HYW8]
 + Helix vinitincta J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP9L nidx=null parent=9WNXH]
Helix wellingtonensis
 - Helix wellingtonensis Cox, 1868 [SYNONYM SPECIES 9854:7RN7B nidx=null parent=56N64]
 + Helix wellingtonensis J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP9M nidx=null parent=9WQX3]
Helix wesselensis
 - Helix wesselensis Cox, 1868 [SYNONYM SPECIES 9854:3KF2V nidx=null parent=6BGJ6]
 + Helix wesselensis J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WP9N nidx=null parent=9WNF3]
Helix whartoni
 - Helix whartoni Cox, 1871 [SYNONYM SPECIES 9854:7RN7D nidx=null parent=7C2PS]
 + Helix whartoni J. C. Cox, 1871 [SYNONYM SPECIES 9857:9WQ4X nidx=null parent=9WQTV]
Helix wilcoxi
 - Helix wilcoxi Cox, 1865 [SYNONYM SPECIES 9854:7RN7H nidx=null parent=5ZTFB]
 + Helix wilcoxi J. C. Cox, 1865 [SYNONYM SPECIES 9857:9WP9P nidx=null parent=5ZTFB]
Helix yatalaensis
 - Helix yatalaensis Cox, 1873 [SYNONYM SPECIES 9854:3KF36 nidx=null parent=73PNP]
 + Helix yatalaensis J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WP9Q nidx=null parent=73PNP]
Hemicytheria loerentheyi
 - Hemicytheria loerentheyi [ACCEPTED SPECIES 9854:6LPP6 nidx=null]
 + Hemicytheria loerentheyi [ACCEPTED SPECIES 9857:9WZC7 nidx=null]
Heminajas haastiana
 - Heminajas haastiana Wilckens, 1918 [SYNONYM SPECIES 9854:6LP49 nidx=null parent=3J3KV]
 + Heminajas haastiana Wilckens, 1927 [SYNONYM SPECIES 9857:9WP9W nidx=null parent=9WNXN]
Hemiphaedusa (Hemiphaedusa) attrita hakusanensis
 - Hemiphaedusa (Hemiphaedusa) attrita hakusanensis Zilch, 1954 [SYNONYM SUBSPECIES 9854:877H5 nidx=null parent=7TXDM]
 + Hemiphaedusa (Hemiphaedusa) attrita hakusanensis Ehrmann, 1954 [SYNONYM SUBSPECIES 9857:9WV6Z nidx=null parent=7TXDM]
Hemiphaedusa strictaluna subcolumellaris
 - Hemiphaedusa strictaluna subcolumellaris Zilch, 1954 [SYNONYM SUBSPECIES 9854:877P3 nidx=null parent=7V4J7]
 + Hemiphaedusa strictaluna subcolumellaris Ehrmann, 1954 [SYNONYM SUBSPECIES 9857:9WV72 nidx=null parent=7V4J7]
Hemithersitea
 - Hemithersitea Savornin, 1915 [ACCEPTED GENUS 9854:7P52L nidx=null]
 + Hemithersitea Savornin, 1914 [ACCEPTED GENUS 9857:9WSGR nidx=null]
Heronallenia kempii
 - Heronallenia kempii Chapman & Parr, 1931 [ACCEPTED SPECIES 9854:3L2PG nidx=null]
 + Heronallenia kempii (Heron-Allen & Earland, 1929) [ACCEPTED SPECIES 9857:9WP9Z nidx=null]
Heterocyathus alternata
 - Heterocyathus alternata Verrill, 1865 [SYNONYM SPECIES 9854:852SH nidx=null parent=3L92R]
 + Heterocyathus alternata Verrill, 1866 [SYNONYM SPECIES 9857:9WPB5 nidx=null parent=9WPB4]
Heterocyathus alternatus
 - Heterocyathus alternatus Verrill, 1865 [ACCEPTED SPECIES 9854:3L92R nidx=null]
 + Heterocyathus alternatus Verrill, 1866 [ACCEPTED SPECIES 9857:9WPB4 nidx=null]
Heterogonyleptes
 - Heterogonyleptes Mello-Leitão, 1928 [SYNONYM GENUS 9854:7PK45 nidx=null parent=7PWNN]
 + Heterogonyleptes Roewer, 1913 [SYNONYM GENUS 9857:9WNYJ nidx=null parent=7PWNN]
Hexaplex kusterianus
 - Hexaplex kusterianus [SYNONYM SPECIES 9854:3LGPL nidx=null parent=3LGPK]
 + Hexaplex kusterianus [sic] [SYNONYM SPECIES 9857:9WPB9 nidx=null parent=3LGPK]
Hippopodiumidae
 - Hippopodiumidae Cox, 1969 [ACCEPTED FAMILY 9854:7NWN7 nidx=null]
 + Hippopodiumidae L. R. Cox, 1969 [ACCEPTED FAMILY 9857:9WLMP nidx=null]
Homolophus nigridorsus
 - Homolophus nigridorsus (Caporiacco, 1934) [ACCEPTED SPECIES 9854:7WN62 nidx=null]
 + Homolophus nigridorsus (Caporiacco, 1935) [ACCEPTED SPECIES 9857:9WP2D nidx=null]
Hondoniscus ureirensis
 - Hondoniscus ureirensis Nunomura & Komatsu, 2019 [ACCEPTED SPECIES 9854:849F6 nidx=null]
 + Hondoniscus ureirensis Nunomura & Komatsu, 2018 [ACCEPTED SPECIES 9857:9WTLC nidx=null]
Howearion hilli
 - Howearion hilli (Cox, 1873) [ACCEPTED SPECIES 9854:3MRGB nidx=null]
 + Howearion hilli (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WPC6 nidx=null]
Hunkydora novozelandica
 - Hunkydora novozelandica sensu Powell, 1979, not Reeve, 1859 [AMBIGUOUS_SYNONYM SPECIES 9854:7RPXB nidx=null parent=HV22]
 + Hunkydora novozelandica (Reeve, 1859) [AMBIGUOUS_SYNONYM SPECIES 9857:6MFQY nidx=null parent=HV22]
Hydrobia antipodum
 - Hydrobia antipodum Martens, 1873 [SYNONYM SPECIES 9854:3N5DG nidx=null parent=4M4N5]
 + Hydrobia antipodum [sic] [SYNONYM SPECIES 9857:9WPCB nidx=null parent=4M4N5]
Hydrobia bruguierensis
 - Hydrobia bruguierensis (Noulet, 1857) [ACCEPTED SPECIES 9854:6MK64 nidx=null]
 + Hydrobia bruguierensis [sic] [SYNONYM SPECIES 9857:9WPCC nidx=null parent=9X22K]
Hypophyllonomus maculipalpi
 - Hypophyllonomus maculipalpi (Piza, 1938) [ACCEPTED SPECIES 9854:7WPZK nidx=null]
 + Hypophyllonomus maculipalpi (Piza Jr., 1938) [ACCEPTED SPECIES 9857:9WP2F nidx=null]
Hypsibius alpinus
 - Hypsibius alpinus (Murray, 1906) [SYNONYM SPECIES 9854:7VHXG nidx=null parent=7T84J]
 + Hypsibius alpinus (Murray, 1906) [SYNONYM SPECIES 9857:6MSQL nidx=null parent=36FGZ]
Hypsibius basalovoi
 - Hypsibius basalovoi Durante & Maucci, 1972 [SYNONYM SPECIES 9854:3P3H9 nidx=null parent=3Q96M]
 + Hypsibius basalovoi Durante Pasa & Maucci, 1973 [SYNONYM SPECIES 9857:9WQBT nidx=null parent=9X2VG]
Hypsibius chilenensis
 - Hypsibius chilenensis (Plate, 1889) [SYNONYM SPECIES 9854:7VHXN nidx=null parent=7T84T]
 + Hypsibius chilenensis (Plate, 1889) [SYNONYM SPECIES 9857:3P3HT nidx=null parent=36FHK]
Hypsibius cyrilli
 - Hypsibius cyrilli Mihelcic, 1942 [SYNONYM SPECIES 9854:3P3HZ nidx=null parent=3Q973]
 + Hypsibius cyrilli Mihelcic, 1951 [SYNONYM SPECIES 9857:9WQBW nidx=null parent=9X32F]
Hypsibius franzi
 - Hypsibius franzi Mihelcic, 1949 [SYNONYM SPECIES 9854:3P3JB nidx=null parent=3Q97C]
 + Hypsibius franzi Mihelcic, 1951 [SYNONYM SPECIES 9857:9WQBX nidx=null parent=9X2ZD]
Hypsibius halapiensis
 - Hypsibius halapiensis Iharos, 1964 [SYNONYM SPECIES 9854:7VHXP nidx=null parent=7T855]
 + Hypsibius halapiensis Iharos, 1964 [SYNONYM SPECIES 9857:3P3JL nidx=null parent=36FJ3]
Hypsibius pingius
 - Hypsibius pingius Marcus, 1936 [SYNONYM SPECIES 9854:7VHXT nidx=null parent=7T86D]
 + Hypsibius pingius Marcus, 1936 [SYNONYM SPECIES 9857:3P3KX nidx=null parent=36FJX]
Hypsibius stappersi
 - Hypsibius stappersi (Richters, 1911) [SYNONYM SPECIES 9854:7VHXZ nidx=null parent=7T87J]
 + Hypsibius stappersi (Richters, 1911) [SYNONYM SPECIES 9857:3P3LS nidx=null parent=36FKP]
Hypsibius tuberculoides
 - Hypsibius tuberculoides Mihelcic, 1949 [SYNONYM SPECIES 9854:3P3M5 nidx=null parent=6MXF3]
 + Hypsibius tuberculoides Mihelcic, 1951 [SYNONYM SPECIES 9857:9WQBY nidx=null parent=9X2V2]
Idiocerus myroxyli
 - Idiocerus myroxyli Ishihara, 1955 [SYNONYM SPECIES 9854:8J6HP nidx=null parent=8JQ6N]
 + Idiocerus myroxyli Ishihara, 1956 [SYNONYM SPECIES 9857:9WQCR nidx=null parent=9WT5B]
Idotea rufescens
 - Idotea rufescens Fee, 1926 [ACCEPTED SPECIES 9854:6MTDR nidx=null]
 + Idotea rufescens Fee, 1927 [ACCEPTED SPECIES 9857:9WPD9 nidx=null]
Indogrammatodon
 - Indogrammatodon Cox, 1937 [ACCEPTED GENUS 9854:8PPSG nidx=null]
 + Indogrammatodon L. R. Cox, 1937 [ACCEPTED GENUS 9857:9WSH3 nidx=null]
Inoceramus goldfussianus
 - Inoceramus goldfussianus d'Orbigny, 1847 [SYNONYM SPECIES 9854:3PQJV nidx=null parent=RR9B]
 + Inoceramus goldfussianus d'Orbigny, 1846 [SYNONYM SPECIES 9857:9WPDD nidx=null parent=9WN78]
Involuta
 - Involuta Cox, 1931 [ACCEPTED GENUS 9854:8PMCW nidx=null]
 + Involuta L. R. Cox, 1931 [ACCEPTED GENUS 9857:9WSH4 nidx=null]
Iotonchus apapillatus
 - Iotonchus apapillatus Choi & Khan, 2000 [ACCEPTED SPECIES 9854:8GR93 nidx=null]
 + Iotonchus apapillatus Dhanam & Jairjapuri, 1998 [ACCEPTED SPECIES 9857:9WTLH nidx=null]
Iotonchus southi
 - Iotonchus southi Choi & Khan, 2000 [ACCEPTED SPECIES 9854:8GR94 nidx=null]
 + Iotonchus southi Dhanam & Jairjapuri, 1998 [ACCEPTED SPECIES 9857:9WTLJ nidx=null]
Iotrigonia limatula
 - Iotrigonia limatula Whitehouse, 1946 [ACCEPTED SPECIES 9854:6N8XC nidx=null]
 + Iotrigonia limatula Whitehouse, 1947 [ACCEPTED SPECIES 9857:9WPDG nidx=null]
Iotrigonia nanutarraensis
 - Iotrigonia nanutarraensis (Cox, 1961) [ACCEPTED SPECIES 9854:6N99C nidx=null]
 + Iotrigonia nanutarraensis (L. R. Cox, 1961) [ACCEPTED SPECIES 9857:9WPDH nidx=null]
Iotula microcosmos
 - Iotula microcosmos (Cox, 1868) [ACCEPTED SPECIES 9854:6N8Z2 nidx=null]
 + Iotula microcosmos (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WPDJ nidx=null]
Iphigenella andrussowi
 - Iphigenella andrussowi G.O. Sars, 1894 [ACCEPTED SPECIES 9854:6MX4H nidx=null]
 + Iphigenella andrussowi G.O. Sars, 1896 [SYNONYM SPECIES 9857:9WPDK nidx=null parent=3S6CY]
Iphigenia brasiliana
 - Iphigenia brasiliana [SYNONYM SPECIES 9854:6MWSJ nidx=null parent=6MX4J]
 + Iphigenia brasiliana [sic] [SYNONYM SPECIES 9857:9WPDL nidx=null parent=6MX4J]
Iridina (Pleiodon) aswanensis
 - Iridina (Pleiodon) aswanensis Cox, 1955 [SYNONYM SPECIES 9854:9B55J nidx=null parent=877NT]
 + Iridina (Pleiodon) aswanensis L. R. Cox, 1955 [SYNONYM SPECIES 9857:9WTLK nidx=null parent=9WTWW]
Ischyropsalis hellwigii
 - Ischyropsalis hellwigii (Panzer, 1794) [ACCEPTED SPECIES 9854:7WRHT nidx=null]
 + Ischyropsalis hellwigii (Panzer, 1793) [ACCEPTED SPECIES 9857:9WP2J nidx=null]
Ischyropsalis hellwigii hellwigii
 - Ischyropsalis hellwigii hellwigii (Panzer, 1794) [ACCEPTED SUBSPECIES 9854:7ZBXB nidx=null]
 + Ischyropsalis hellwigii hellwigii (Panzer, 1793) [ACCEPTED SUBSPECIES 9857:9WP7S nidx=null]
Isohypsibius basalovoi
 - Isohypsibius basalovoi (Durante & Maucci, 1972) [ACCEPTED SPECIES 9854:3Q96M nidx=null]
 + Isohypsibius basalovoi (Durante Pasa & Maucci, 1973) [SYNONYM SPECIES 9857:9WPDP nidx=null parent=9X2VG]
Isohypsibius cyrilli
 - Isohypsibius cyrilli (Mihelcic, 1942) [ACCEPTED SPECIES 9854:3Q973 nidx=null]
 + Isohypsibius cyrilli (Mihelcic, 1951) [SYNONYM SPECIES 9857:9WPDS nidx=null parent=9X32F]
Isohypsibius franzi
 - Isohypsibius franzi (Mihelcic, 1949) [ACCEPTED SPECIES 9854:3Q97C nidx=null]
 + Isohypsibius franzi (Mihelcic, 1951) [SYNONYM SPECIES 9857:9WPDV nidx=null parent=9X2ZD]
Isohypsibius fuscus
 - Isohypsibius fuscus (Mihelcic, 1971) [ACCEPTED SPECIES 9854:3Q97D nidx=null]
 + Isohypsibius fuscus (Mihelcic, 1972) [SYNONYM SPECIES 9857:9WPDW nidx=null parent=9X2Y2]
Isohypsibius prosostomus cambrensis
 - Isohypsibius prosostomus cambrensis Morgan, 1970 [ACCEPTED SUBSPECIES 9854:5J5FG nidx=null]
 + Isohypsibius prosostomus cambrensis (Morgan, 1976) [SYNONYM SUBSPECIES 9857:9WRBC nidx=null parent=9WSN4]
Isohypsibius tuberculoides
 - Isohypsibius tuberculoides (Mihelcic, 1949) [ACCEPTED SPECIES 9854:6MXF3 nidx=null]
 + Isohypsibius tuberculoides (Mihelcic, 1951) [SYNONYM SPECIES 9857:9WPDY nidx=null parent=9X2V2]
Isohypsibius tubereticulatus
 - Isohypsibius tubereticulatus Pilato & Catanzaro, 1990 [ACCEPTED SPECIES 9854:6N9F3 nidx=null]
 + Isohypsibius tubereticulatus Pilato & Catanzaro, 1989 [SYNONYM SPECIES 9857:9WPDZ nidx=null parent=9X333]
Isohypsibius verae
 - Isohypsibius verae Pilato & Catanzaro, 1990 [ACCEPTED SPECIES 9854:6N9GB nidx=null]
 + Isohypsibius verae Pilato & Catanzaro, 1989 [SYNONYM SPECIES 9857:9WPF2 nidx=null parent=9X2VS]
Isophellia
 - Isophellia [ACCEPTED GENUS 9854:55KR nidx=null]
 + Isophellia Carlgren, 1900 [ACCEPTED GENUS 9857:9WKLN nidx=null]
Joufia cappadociensis
 - Joufia cappadociensis (Cox, 1960) [SYNONYM SPECIES 9854:7RRW6 nidx=null parent=7RRW9]
 + Joufia cappadociensis (L. R. Cox, 1960) [SYNONYM SPECIES 9857:9WTLV nidx=null parent=7RRW9]
Kaingangoides pardalis
 - Kaingangoides pardalis Piza Jr., 1938 [SYNONYM SPECIES 9854:7WST8 nidx=null parent=7QBBZ]
 + Kaingangoides pardalis Piza, 1938 [SYNONYM SPECIES 9857:9WP2K nidx=null parent=7QBBZ]
Kaliella scandens
 - Kaliella scandens (Cox, 1872) [ACCEPTED SPECIES 9854:3QZ2W nidx=null]
 + Kaliella scandens (J. C. Cox, 1872) [ACCEPTED SPECIES 9857:9WPFM nidx=null]
Kidderia auporia
 - Kidderia auporia [SYNONYM SPECIES 9854:3R7CH nidx=null parent=3R7CJ]
 + Kidderia auporia [sic] [SYNONYM SPECIES 9857:9WPFR nidx=null parent=3R7CJ]
Kidodia
 - Kidodia Cox, 1936 [ACCEPTED GENUS 9854:9GXNY nidx=null]
 + Kidodia L. R. Cox, 1936 [ACCEPTED GENUS 9857:9WVF5 nidx=null]
Kidodia stockleyi
 - Kidodia stockleyi Cox, 1936 [ACCEPTED SPECIES 9854:9H52M nidx=null]
 + Kidodia stockleyi L. R. Cox, 1936 [ACCEPTED SPECIES 9857:9WZ3R nidx=null]
Kittlidiscidae
 - Kittlidiscidae Cox, 1960 [ACCEPTED FAMILY 9854:7NWP6 nidx=null]
 + Kittlidiscidae L. R. Cox, 1960 [ACCEPTED FAMILY 9857:9WLMZ nidx=null]
Lamellana
 - Lamellana Lin, 1992 [ACCEPTED GENUS 9854:7P6TW nidx=null]
 + Lamellana G.-Y. Lin, 1992 [ACCEPTED GENUS 9857:9WLZ2 nidx=null]
Lamellana gymnota
 - Lamellana gymnota Lin, 1992 [ACCEPTED SPECIES 9854:3RYXR nidx=null]
 + Lamellana gymnota G.-Y. Lin, 1992 [ACCEPTED SPECIES 9857:9WPG3 nidx=null]
Lamelliconcha concinnus
 - Lamelliconcha concinnus (G. B. Sowerby I, 1835) [SYNONYM SPECIES 9854:3RZ2C nidx=null parent=3RZ2D]
 + Lamelliconcha concinnus [sic] [SYNONYM SPECIES 9857:9WPG4 nidx=null parent=3RZ2D]
Lamennaisia ambigua
 - Lamennaisia ambigua (Nees, 1834) [ACCEPTED SPECIES 9854:9D6Y5 nidx=null]
 + Lamennaisia ambigua (Nees, 1834) [ACCEPTED SPECIES 9857:9WQHM nidx=null]
Lamprodrilus isoporus variabilis
 - Lamprodrilus isoporus variabilis Michaelsen, 1901 [SYNONYM SUBSPECIES 9854:5J8YH nidx=null parent=3S4HF]
 + Lamprodrilus isoporus variabilis Svetlov, 1936 [SYNONYM SUBSPECIES 9857:9WRBD nidx=null parent=3S4HF]
Lanistes grabhami
 - Lanistes grabhami Cox, 1933 [ACCEPTED SPECIES 9854:3S79W nidx=null]
 + Lanistes grabhami L. R. Cox, 1933 [ACCEPTED SPECIES 9857:9WPG7 nidx=null]
Laubellidae
 - Laubellidae Cox, 1960 [ACCEPTED FAMILY 9854:7NWPM nidx=null]
 + Laubellidae L. R. Cox, 1960 [ACCEPTED FAMILY 9857:9WLN2 nidx=null]
Lavigeria rukwaensis
 - Lavigeria rukwaensis (Cox, 1939) [ACCEPTED SPECIES 9854:7RV8C nidx=null]
 + Lavigeria rukwaensis (L. R. Cox, 1939) [ACCEPTED SPECIES 9857:9WPGD nidx=null]
Lavigeria stockleyi
 - Lavigeria stockleyi (Cox, 1939) [ACCEPTED SPECIES 9854:7RV8D nidx=null]
 + Lavigeria stockleyi (L. R. Cox, 1939) [ACCEPTED SPECIES 9857:9WPGF nidx=null]
Lavigno calcinella var. gallobritannica
 - Lavigno calcinella var. gallobritannica Récluz in Chenu, 1843 [SYNONYM VARIETY 9854:5PNVT nidx=null parent=4VYNX]
 + Lavigno calcinella var. gallobritannica Récluz, 1845 [SYNONYM VARIETY 9857:9WRH5 nidx=null parent=4VYNX]
Lavigno calcinella var. intermedia
 - Lavigno calcinella var. intermedia Récluz in Chenu, 1843 [SYNONYM VARIETY 9854:7LVRS nidx=null parent=4VYNX]
 + Lavigno calcinella var. intermedia Récluz, 1845 [SYNONYM VARIETY 9857:9WRH6 nidx=null parent=4VYNX]
Lavigno calcinella var. mediterranea
 - Lavigno calcinella var. mediterranea Récluz in Chenu, 1843 [SYNONYM VARIETY 9854:5PNVV nidx=null parent=4VYNX]
 + Lavigno calcinella var. mediterranea Récluz, 1845 [SYNONYM VARIETY 9857:9WRH7 nidx=null parent=4VYNX]
Lavigno calcinella var. oceanica
 - Lavigno calcinella var. oceanica Récluz in Chenu, 1843 [SYNONYM VARIETY 9854:5PNVW nidx=null parent=4VYNX]
 + Lavigno calcinella var. oceanica Récluz, 1845 [SYNONYM VARIETY 9857:9WRH8 nidx=null parent=4VYNX]
Leptogyra
 - Leptogyra K. J. Bush, 18997 [ACCEPTED GENUS 9854:9JL27 nidx=null]
 + Leptogyra K. J. Bush, 1897 [ACCEPTED GENUS 9857:9WLZB nidx=null]
Leptogyra eritmeta
 - Leptogyra eritmeta K. J. Bush, 18997 [ACCEPTED SPECIES 9854:9K59D nidx=null]
 + Leptogyra eritmeta K. J. Bush, 1897 [ACCEPTED SPECIES 9857:9WPH4 nidx=null]
Leptogyra inconspicua
 - Leptogyra inconspicua K. J. Bush, 18997 [ACCEPTED SPECIES 9854:9K59F nidx=null]
 + Leptogyra inconspicua K. J. Bush, 1897 [ACCEPTED SPECIES 9857:9WPH5 nidx=null]
Leptogyra verrilli
 - Leptogyra verrilli K. J. Bush, 18997 [ACCEPTED SPECIES 9854:9K59G nidx=null]
 + Leptogyra verrilli K. J. Bush, 1897 [ACCEPTED SPECIES 9857:9WPH6 nidx=null]
Lepton ovatum
 - Lepton ovatum Tate, 1886 [SYNONYM SPECIES 9854:3TRS2 nidx=null parent=764Y9]
 + Lepton ovatum Tate, 1887 [SYNONYM SPECIES 9857:9WPHC nidx=null parent=9X2BH]
Leptopoma (Leptopoma) hargravesi
 - Leptopoma (Leptopoma) hargravesi Cox, 1873 [SYNONYM SPECIES 9854:7RVR4 nidx=null parent=7RVWS]
 + Leptopoma (Leptopoma) hargravesi J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WPHD nidx=null parent=9WPHF]
Leptopoma hargravesi
 - Leptopoma hargravesi Cox, 1873 [ACCEPTED SPECIES 9854:7RVWS nidx=null]
 + Leptopoma hargravesi J. C. Cox, 1873 [ACCEPTED SPECIES 9857:9WPHF nidx=null]
Leptopoma lowi
 - Leptopoma lowi L. Pfeiffer, 1858 [SYNONYM SPECIES 9854:7RVXD nidx=null parent=3TTKR]
 + Leptopoma lowi L. Pfeiffer, 1856 [SYNONYM SPECIES 9857:9WPHG nidx=null parent=3TTKR]
Leptopoma venustulum
 - Leptopoma venustulum Tapparone Canefri, 1886 [ACCEPTED SPECIES 9854:3TTKX nidx=null]
 + Leptopoma venustulum Tapparone Canefri, 1883 [ACCEPTED SPECIES 9857:9WPHH nidx=null]
Lernaeopoda cyprinacea
 - Lernaeopoda cyprinacea Hermann, 1783 [SYNONYM SPECIES 9854:7WXSC nidx=null parent=6XD8S]
 + Lernaeopoda cyprinacea Hermann, 1783 [SYNONYM SPECIES 9857:72282 nidx=null parent=6XD8S]
Lernaeopoda salmoneus
 - Lernaeopoda salmoneus (Gissler, 1751) [SYNONYM SPECIES 9854:7WXSG nidx=null parent=6XD8S]
 + Lernaeopoda salmoneus (Gissler, 1751) [SYNONYM SPECIES 9857:7227H nidx=null parent=6XD8S]
Letitia (Letitia) chapmani
 - Letitia (Letitia) chapmani (Cox, 1879) [SYNONYM SPECIES 9854:94HBT nidx=null parent=7RW3K]
 + Letitia (Letitia) chapmani (J. C. Cox, 1879) [SYNONYM SPECIES 9857:9WTM5 nidx=null parent=9WTM6]
Letitia chapmani
 - Letitia chapmani (Cox, 1879) [ACCEPTED SPECIES 9854:7RW3K nidx=null]
 + Letitia chapmani (J. C. Cox, 1879) [ACCEPTED SPECIES 9857:9WTM6 nidx=null]
Levisulculus elongatus
 - Levisulculus elongatus [ACCEPTED SPECIES 9854:726ZB nidx=null]
 + Levisulculus elongatus [ACCEPTED SPECIES 9857:9WZBT nidx=null]
Liardetia scandens
 - Liardetia scandens (Cox, 1872) [SYNONYM SPECIES 9854:6Q78H nidx=null parent=3QZ2W]
 + Liardetia scandens (J. C. Cox, 1872) [SYNONYM SPECIES 9857:9WPHK nidx=null parent=9WPFM]
Limax maurus
 - Limax maurus Quoy & Gaimard, 1824 [SYNONYM SPECIES 9854:7RWQ2 nidx=null parent=43BW2]
 + Limax maurus Quoy & Gaimard, 1825 [SYNONYM SPECIES 9857:9WPHV nidx=null parent=43BW2]
Limnaea (Pleurolimnaea) tenuicostata
 - Limnaea (Pleurolimnaea) tenuicostata Meek & Hayden, 1860 [SYNONYM SPECIES 9854:7RWW5 nidx=null parent=4KBQ9]
 + Limnaea (Pleurolimnaea) tenuicostata [sic] [SYNONYM SPECIES 9857:9WTMS nidx=null parent=4KBQ9]
Linanthus bicolor minimus
 - Linanthus bicolor minimus (H. Mason) Cronquist [SYNONYM INFRASPECIFIC_NAME 9854:7HBD4 nidx=null parent=8RYP4]
 + Linanthus bicolor minimus (H. Mason) Cronquist [SYNONYM INFRASPECIFIC_NAME 9857:9WRNY nidx=null parent=8RYP4]
Lindholmiola reischuetzi
 - Lindholmiola reischuetzi Falkner, 1995 [ACCEPTED SPECIES 9854:6QG5Q nidx=null]
 + Lindholmiola reischuetzi Falkner, 1996 [ACCEPTED SPECIES 9857:9WPJ2 nidx=null]
Liogonyleptoides calcaratus
 - Liogonyleptoides calcaratus Piza Jr., 1936 [SYNONYM SPECIES 9854:7WYWX nidx=null parent=7WYX2]
 + Liogonyleptoides calcaratus Piza, 1936 [SYNONYM SPECIES 9857:9WP2N nidx=null parent=7WYX2]
Lithophaga cinnamonea
 - Lithophaga cinnamonea (Lamarck, 1819) [SYNONYM SPECIES 9854:6QKJN nidx=null parent=MQRD]
 + Lithophaga cinnamonea (Gmelin, 1791) [SYNONYM SPECIES 9857:9WPJ4 nidx=null parent=MQRD]
Litorina philippina
 - Litorina philippina Martens, 1900 [SYNONYM SPECIES 9854:7RY2R nidx=null parent=7RY3S]
 + Litorina philippina [sic] [SYNONYM SPECIES 9857:9WPJ5 nidx=null parent=7RY3S]
Littorina littorea var. major
 - Littorina littorea var. major Dautzenberg & Durouchoux, 1912 [SYNONYM VARIETY 9854:7LVG8 nidx=null parent=3VNPR]
 + Littorina littorea var. major Dautzenberg & Durouchoux, 1913 [SYNONYM VARIETY 9857:9WRHD nidx=null parent=3VNPR]
Lophoranina bittneri
 - Lophoranina bittneri (Lörenthey, 1901) [ACCEPTED SPECIES 9854:9HL9N nidx=null]
 + Lophoranina bittneri (Lőrenthey, 1902) [ACCEPTED SPECIES 9857:9WTTS nidx=null]
Luinodiscus cupreus
 - Luinodiscus cupreus (Cox, 1868) [ACCEPTED SPECIES 9854:3WDRF nidx=null]
 + Luinodiscus cupreus (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WPJJ nidx=null]
Lumpenopsis hypochroma
 - Lumpenopsis hypochroma (Hubbs & Schultz, 1932) [ACCEPTED SPECIES 9854:99JZM nidx=null]
 + Lumpenopsis hypochroma (Hubbs & Schultz, 1932) [ACCEPTED SPECIES 9857:9WPJL nidx=null]
Lutraria elliptica var. alteruta
 - Lutraria elliptica var. alteruta Jeffreys, 1864 [SYNONYM VARIETY 9854:7LWXY nidx=null parent=3WGH4]
 + Lutraria elliptica var. alteruta [sic] [SYNONYM VARIETY 9857:9WRHF nidx=null parent=3WGH4]
Lycettia
 - Lycettia Cox, 1937 [ACCEPTED GENUS 9854:7P82P nidx=null]
 + Lycettia L. R. Cox, 1937 [ACCEPTED GENUS 9857:9WMCS nidx=null]
Lycettia indica
 - Lycettia indica Cox, 1940 [ACCEPTED SPECIES 9854:3WJHP nidx=null]
 + Lycettia indica L. R. Cox, 1940 [ACCEPTED SPECIES 9857:9WPJR nidx=null]
Lyncina pembana
 - Lyncina pembana (Cox, 1927) [ACCEPTED SPECIES 9854:8M3LF nidx=null]
 + Lyncina pembana (L. R. Cox, 1927) [ACCEPTED SPECIES 9857:9WTPX nidx=null]
Lysogorellidae
 - Lysogorellidae [ACCEPTED FAMILY 9854:85GFK nidx=null]
 + Lysogorellidae Gruendel, 1977 [ACCEPTED FAMILY 9857:9WLNP nidx=null]
Macrobiotus anderssoni
 - Macrobiotus anderssoni Richters, 1908 [ACCEPTED SPECIES 9854:3X2QG nidx=null]
 + Macrobiotus anderssoni Richters, 1907 [ACCEPTED SPECIES 9857:9WPK9 nidx=null]
Macrobiotus echinogenitus
 - Macrobiotus echinogenitus Richters, 1904 [ACCEPTED SPECIES 9854:3X2S8 nidx=null]
 + Macrobiotus echinogenitus Richters, 1903 [ACCEPTED SPECIES 9857:9WPKD nidx=null]
Macrobiotus hyperonyx
 - Macrobiotus hyperonyx Maucci, 1982 [ACCEPTED SPECIES 9854:3X2T7 nidx=null]
 + Macrobiotus hyperonyx Maucci, 1983 [SYNONYM SPECIES 9857:9WPKF nidx=null parent=9WSCM]
Macrobiotus lusitanicus
 - Macrobiotus lusitanicus Maucci & Durante Pasa, 1986 [ACCEPTED SPECIES 9854:3X2TW nidx=null]
 + Macrobiotus lusitanicus Maucci & Durante Pasa, 1984 [SYNONYM SPECIES 9857:9WPKK nidx=null parent=9WPPR]
Macrobiotus mottai
 - Macrobiotus mottai Binda & Pilato, 1995 [ACCEPTED SPECIES 9854:6QQL9 nidx=null]
 + Macrobiotus mottai Binda & Pilato, 1994 [SYNONYM SPECIES 9857:9WPKN nidx=null parent=9WPPW]
Macrobiotus peteri
 - Macrobiotus peteri Pilato, Claxton & Binda, 1990 [ACCEPTED SPECIES 9854:6QQL6 nidx=null]
 + Macrobiotus peteri Pilato, Claxton & Binda, 1989 [SYNONYM SPECIES 9857:9WPKR nidx=null parent=9WQ69]
Macrobiotus rollei
 - Macrobiotus rollei Heinis, 1921 [ACCEPTED SPECIES 9854:732L6 nidx=null]
 + Macrobiotus rollei Heinis, 1920 [ACCEPTED SPECIES 9857:9WPKV nidx=null]
Macrocycloides circumcincta
 - Macrocycloides circumcincta (Cox, 1868) [SYNONYM SPECIES 9854:8THTH nidx=null parent=73YSR]
 + Macrocycloides circumcincta (J. C. Cox, 1868) [SYNONYM SPECIES 9857:9WTQ3 nidx=null parent=9WPXM]
Macrocyclops albidus oligolasius
 - Macrocyclops albidus oligolasius Kiefer, 1934 [ACCEPTED SUBSPECIES 9854:7ZH7M nidx=null]
 + Macrocyclops albidus oligolasius Kiefer, 1928 [ACCEPTED SUBSPECIES 9857:9WRC8 nidx=null]
Macrocypridoidea
 - Macrocypridoidea Müller, 1912 [ACCEPTED SUPERFAMILY 9854:84JT5 nidx=null]
 + Macrocypridoidea Mueller, 1912 [ACCEPTED SUPERFAMILY 9857:5BV nidx=null]
Macrodorcas rectus amamianus
 - Macrodorcas rectus amamianus Nomura, 1964 [SYNONYM INFRASPECIFIC_NAME 9854:7Z92V nidx=null parent=7ZBJB]
 + Macrodorcas rectus amamianus Nomura, 1964 [SYNONYM INFRASPECIFIC_NAME 9857:7HCQN nidx=null parent=37CR3]
Macrophallikoropa belli
 - Macrophallikoropa belli (Cox, 1864) [ACCEPTED SPECIES 9854:6QS9W nidx=null]
 + Macrophallikoropa belli (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WPL6 nidx=null]
Macropsis irrorata
 - Macropsis irrorata Tishechkin, 2002 non Matsumura, 1912 [AMBIGUOUS_SYNONYM SPECIES 9854:8JW3W nidx=null parent=733Z5]
 + Macropsis irrorata Tishechkin, 2011 [AMBIGUOUS_SYNONYM SPECIES 9857:9WQMR nidx=null parent=733Z5]
Macrosiphum (Macrosiphum) euphorbiellum
 - Macrosiphum (Macrosiphum) euphorbiellum [ACCEPTED SPECIES 9854:9M45C nidx=null]
 + Macrosiphum (Macrosiphum) euphorbiellum [ACCEPTED SPECIES 9857:9WSYB nidx=null]
Macrosiphum (Macrosiphum) tadecola
 - Macrosiphum (Macrosiphum) tadecola [ACCEPTED SPECIES 9854:9M45M nidx=null]
 + Macrosiphum (Macrosiphum) tadecola [ACCEPTED SPECIES 9857:9WSYF nidx=null]
Mactra epidermia
 - Mactra epidermia Deshayes in Reeve, 1854 [AMBIGUOUS_SYNONYM SPECIES 9854:3XDBW nidx=null parent=3XDCK]
 + Mactra epidermia Reeve, 1854 [SYNONYM SPECIES 9857:9WPLC nidx=null parent=3XDCK]
Mactra inflata
 - Mactra inflata Bronn, 1830 [AMBIGUOUS_SYNONYM SPECIES 9854:72RX4 nidx=null parent=3XDJ2]
 + Mactra inflata Bronn, 1831 [SYNONYM SPECIES 9857:9WPLG nidx=null parent=3XDJ2]
Mactrinula plicaria
 - Mactrinula plicaria Gray, 1853 [SYNONYM SPECIES 9854:3XDKS nidx=null parent=3XDKT]
 + Mactrinula plicaria [sic] [SYNONYM SPECIES 9857:9WPLM nidx=null parent=3XDKT]
Macularion aquila
 - Macularion aquila (Cox, 1868) [SYNONYM SPECIES 9854:7S235 nidx=null parent=7T7J7]
 + Macularion aquila (J. C. Cox, 1868) [SYNONYM SPECIES 9857:9WPLN nidx=null parent=9WQRH]
Magdala arctica
 - Magdala arctica Mörch, 1868 [SYNONYM SPECIES 9854:3XGDK nidx=null parent=3WSTX]
 + Magdala arctica Mörch, 1870 [SYNONYM SPECIES 9857:9WPLQ nidx=null parent=3WSTX]
Magilaoma penolensis
 - Magilaoma penolensis (Cox, 1868) [ACCEPTED SPECIES 9854:3XGVS nidx=null]
 + Magilaoma penolensis (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WPLR nidx=null]
Marginella candida
 - Marginella candida Ant. Bivona, 1832 [SYNONYM SPECIES 9854:99K6H nidx=null parent=6X8QT]
 + Marginella candida Bivona e Bernardi, 1832 [SYNONYM SPECIES 9857:9WPM2 nidx=null parent=6X8QT]
Marinauris hargravesi
 - Marinauris hargravesi (Cox, 1869) [SYNONYM SPECIES 9854:3Y6MT nidx=null parent=3JDWD]
 + Marinauris hargravesi (J. C. Cox, 1869) [SYNONYM SPECIES 9857:9WPM3 nidx=null parent=3JDWD]
Maua quadrituberculata tavoyana
 - Maua quadrituberculata tavoyana (Ollenbach, 1929) [ACCEPTED SUBSPECIES 9854:7HDM7 nidx=null]
 + Maua quadrituberculata tavoyana (Ollenbach, 1928) [ACCEPTED SUBSPECIES 9857:9WV7J nidx=null]
Megalacron alfredi
 - Megalacron alfredi (Cox, 1871) [ACCEPTED SPECIES 9854:3YTR2 nidx=null]
 + Megalacron alfredi (J. C. Cox, 1871) [ACCEPTED SPECIES 9857:9WPMB nidx=null]
Megalacron macfarlanei
 - Megalacron macfarlanei (Cox, 1873) [ACCEPTED SPECIES 9854:3YTRG nidx=null]
 + Megalacron macfarlanei (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WPMC nidx=null]
Megalacron novaegeorgiensis
 - Megalacron novaegeorgiensis (Cox, 1870) [ACCEPTED SPECIES 9854:3YTRK nidx=null]
 + Megalacron novaegeorgiensis (J. C. Cox, 1870) [ACCEPTED SPECIES 9857:9WPMD nidx=null]
Megalacron sellersi
 - Megalacron sellersi (Cox, 1872) [ACCEPTED SPECIES 9854:3YTRN nidx=null]
 + Megalacron sellersi (J. C. Cox, 1872) [ACCEPTED SPECIES 9857:9WPMF nidx=null]
Meimuna pallida
 - Meimuna pallida Ollenbach, 1929 [ACCEPTED SPECIES 9854:3Z33X nidx=null]
 + Meimuna pallida Ollenbach, 1928 [ACCEPTED SPECIES 9857:9WTQD nidx=null]
Melampsalta inglisi
 - Melampsalta inglisi Ollenbach, 1929 [SYNONYM SPECIES 9854:3Z4S9 nidx=null parent=V72R]
 + Melampsalta inglisi Ollenbach, 1928 [SYNONYM SPECIES 9857:9WTQG nidx=null parent=9WTCP]
Melampsalta intermedia
 - Melampsalta intermedia Ollenbach, 1929 [SYNONYM SPECIES 9854:3Z4SB nidx=null parent=5Z4R4]
 + Melampsalta intermedia Ollenbach, 1928 [SYNONYM SPECIES 9857:9WTQH nidx=null parent=9WTCQ]
Melampsalta minuto
 - Melampsalta minuto (Ollenbach, 1929) [SYNONYM SPECIES 9854:8J8RY nidx=null parent=V74N]
 + Melampsalta minuto (Ollenbach, 1928) [SYNONYM SPECIES 9857:3Z4TX nidx=null parent=V74N]
Melania elegans
 - Melania elegans W. H. Benson, 1836 [SYNONYM SPECIES 9854:7S4GV nidx=null parent=73KPB]
 + Melania elegans W. H. Benson, 1837 [SYNONYM SPECIES 9857:9WPN8 nidx=null parent=73KPB]
Melania lirata
 - Melania lirata W. H. Benson, 1836 [SYNONYM SPECIES 9854:8WN2H nidx=null parent=54X82]
 + Melania lirata W. H. Benson, 1837 [SYNONYM SPECIES 9857:9WPNB nidx=null parent=54X82]
Melania pyramis
 - Melania pyramis W. H. Benson, 1836 [SYNONYM SPECIES 9854:7S4L7 nidx=null parent=3Z8P3]
 + Melania pyramis W. H. Benson, 1837 [SYNONYM SPECIES 9857:9WPNC nidx=null parent=3Z8P3]
Melanopsis narzolina ecarinata
 - Melanopsis narzolina ecarinata Fontannes, 1879 [ACCEPTED SUBSPECIES 9854:7HF8M nidx=null]
 + Melanopsis narzolina ecarinata Fontannes, 1880 [ACCEPTED SUBSPECIES 9857:9WRCC nidx=null]
Melizoderinae
 - Melizoderinae Deitz & Dietrich, 1993 [ACCEPTED SUBFAMILY 9854:8JK4W nidx=null]
 + Melizoderinae Deitz & Dietrich, 1993 [SYNONYM FAMILY 9857:9WS9W nidx=null parent=8HBQY]
Melizoderini
 - Melizoderini Deitz & Dietrich, 1993 [ACCEPTED TRIBE 9854:8KNJ9 nidx=null]
 + Melizoderini Deitz & Dietrich, 1993 [SYNONYM FAMILY 9857:9WSB8 nidx=null parent=8HBQY]
Mendrausus pauxillus
 - Mendrausus pauxillus (Fieber, 1869) [ACCEPTED SPECIES 9854:8RLXL nidx=null]
 + Mendrausus pauxillus (Fieber, 1869) [ACCEPTED SPECIES 9857:9WTQL nidx=null]
Meroe solandri
 - Meroe solandri Gray, 1838 [SYNONYM SPECIES 9854:3ZVNF nidx=null parent=7B4C2]
 + Meroe solandri [sic] [SYNONYM SPECIES 9857:9WPNS nidx=null parent=7B4C2]
Mesamia obtusa
 - Mesamia obtusa Beamer, 1924 [ACCEPTED SPECIES 9854:3ZXN9 nidx=null]
 + Mesamia obtusa Beamer, 1942 [ACCEPTED SPECIES 9857:9WQRW nidx=null]
Metalycomedes
 - Metalycomedes Mello-Leitão, 1927 [ACCEPTED GENUS 9854:7PNXV nidx=null]
 + Metalycomedes Mello-Leitão, 1926 [ACCEPTED GENUS 9857:9WNYM nidx=null]
Meteusarcoides caudatus
 - Meteusarcoides caudatus (Piza, 1940) [ACCEPTED SPECIES 9854:7X9GT nidx=null]
 + Meteusarcoides caudatus (Piza Jr., 1940) [ACCEPTED SPECIES 9857:9WP2Y nidx=null]
Mirus mupingianus
 - Mirus mupingianus (Deshayes, 1870) [SYNONYM SPECIES 9854:7S5YS nidx=null parent=9FYW5]
 + Mirus mupingianus [sic] [SYNONYM SPECIES 9857:9WPSJ nidx=null parent=9FYW5]
Modiola pterotus
 - Modiola pterotus Locard, 1888 [SYNONYM SPECIES 9854:43TKK nidx=null parent=43TR5]
 + Modiola pterotus [sic] [SYNONYM SPECIES 9857:9WPSW nidx=null parent=43TR5]
Modiola undulatus
 - Modiola undulatus [SYNONYM SPECIES 9854:43TM2 nidx=null parent=MST6]
 + Modiola undulatus (Dunker, 1857) [SYNONYM SPECIES 9857:9WPSX nidx=null parent=MST6]
Modiolus arcuatulus
 - Modiolus arcuatulus Hanley, 1843 [SYNONYM SPECIES 9854:43TQW nidx=null parent=92THQ]
 + Modiolus arcuatulus Hanley, 1844 [SYNONYM SPECIES 9857:9WPSZ nidx=null parent=92THQ]
Mogannia tienmushana
 - Mogannia tienmushana non Ôuchi, 1938 [SYNONYM SPECIES 9854:8J9FR nidx=null parent=73MLG]
 + Mogannia tienmushana Chen, 1957 [SYNONYM SPECIES 9857:9WTR2 nidx=null parent=73MLG]
Monomatapa
 - Monomatapa Distant, 1879 [ACCEPTED GENUS 9854:8HMMB nidx=null]
 + Monomatapa Distant, 1897 [ACCEPTED GENUS 9857:9WSHS nidx=null]
Monopleura sulcata
 - Monopleura sulcata Matheron, 1843 [SYNONYM SPECIES 9854:448XZ nidx=null parent=34CMD]
 + Monopleura sulcata Matheron, 1842 [SYNONYM SPECIES 9857:9WPT7 nidx=null parent=9WNJN]
Monotis dissimilis
 - Monotis dissimilis Cox, 1878 [SYNONYM SPECIES 9854:8T6GH nidx=null parent=8T6JH]
 + Monotis dissimilis J. C. Cox, 1878 [SYNONYM SPECIES 9857:9WTR4 nidx=null parent=9WTT6]
Montidelos macquariensis
 - Montidelos macquariensis (Cox, 1872) [ACCEPTED SPECIES 9854:44B92 nidx=null]
 + Montidelos macquariensis (J. C. Cox, 1872) [ACCEPTED SPECIES 9857:9WPTC nidx=null]
Montidelos urarensis
 - Montidelos urarensis (Cox, 1866) [ACCEPTED SPECIES 9854:44B94 nidx=null]
 + Montidelos urarensis (J. C. Cox, 1866) [ACCEPTED SPECIES 9857:9WPTD nidx=null]
Murex colpos
 - Murex colpos Dall in Burch, 1955 [SYNONYM SPECIES 9854:44LXH nidx=null parent=TZGT]
 + Murex colpos J. Q. Burch, 1955 [SYNONYM SPECIES 9857:9WPTP nidx=null parent=TZGT]
Murex kusterianus
 - Murex kusterianus [SYNONYM SPECIES 9854:44M6Y nidx=null parent=3LGPK]
 + Murex kusterianus [sic] [SYNONYM SPECIES 9857:9WPTR nidx=null parent=3LGPK]
Murex recticornis
 - Murex recticornis Martens [in Lobbecke & Kobelt] , 1880 [SYNONYM SPECIES 9854:6RQM5 nidx=null parent=TZGQ]
 + Murex recticornis E. von Martens [in Lobbecke & Kobelt] , 1880 [SYNONYM SPECIES 9857:9WPTT nidx=null parent=TZGQ]
Muricanthus kusterianus
 - Muricanthus kusterianus [SYNONYM SPECIES 9854:44MR6 nidx=null parent=3LGPK]
 + Muricanthus kusterianus [sic] [SYNONYM SPECIES 9857:9WPTX nidx=null parent=3LGPK]
Muricopsis carvalhoi
 - Muricopsis carvalhoi Cox, 1936 [SYNONYM SPECIES 9854:868CN nidx=null parent=7SD3W]
 + Muricopsis carvalhoi L. R. Cox, 1936 [SYNONYM SPECIES 9857:9WTR6 nidx=null parent=9WPZV]
Mussonena spinei
 - Mussonena spinei (Cox, 1868) [ACCEPTED SPECIES 9854:44QVM nidx=null]
 + Mussonena spinei (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WPV2 nidx=null]
Mya ferruginea
 - Mya ferruginea J. E. Gray, 1847 [SYNONYM SPECIES 9854:9G5H2 nidx=null parent=5572L]
 + Mya ferruginea [sic] [SYNONYM SPECIES 9857:9WPV5 nidx=null parent=5572L]
Myerslopioidea
 - Myerslopioidea Evans, 1957 [SYNONYM TRIBE 9854:8RGB3 nidx=null parent=9HHVX]
 + Myerslopioidea Evans, 1957 [SYNONYM SUBFAMILY 9857:9WSB9 nidx=null parent=8JK4Y]
Myodocopa
 - Myodocopa Sars, 1866 [ACCEPTED SUBCLASS 9854:84JP9 nidx=null]
 + Myodocopa Mueller, 1894 [ACCEPTED SUBCLASS 9857:9WLLJ nidx=null]
Myodora ovata
 - Myodora ovata (Reeve, 1844) [SYNONYM SPECIES 9854:454RX nidx=null parent=44RMV]
 + Myodora ovata [SYNONYM SPECIES 9857:9WPVC nidx=null parent=44RMV]
Myonera demistriata
 - Myonera demistriata (Allen & de Morgan, 1981) [SYNONYM SPECIES 9854:7S8PB nidx=null parent=KXCW]
 + Myonera demistriata (Allen & Morgan, 1981) [SYNONYM SPECIES 9857:454VX nidx=null parent=KXCW]
Myopholadidae
 - Myopholadidae Cox, 1964 [ACCEPTED FAMILY 9854:8K2X7 nidx=null]
 + Myopholadidae L. R. Cox, 1964 [ACCEPTED FAMILY 9857:9WS9T nidx=null]
Mysidiellidae
 - Mysidiellidae Cox, 1964 [ACCEPTED FAMILY 9854:7NWRY nidx=null]
 + Mysidiellidae L. R. Cox, 1964 [ACCEPTED FAMILY 9857:9WLNV nidx=null]
Myzus (Myzus) polygoniyonai
 - Myzus (Myzus) polygoniyonai [ACCEPTED SPECIES 9854:9HJWT nidx=null]
 + Myzus (Myzus) polygoniyonai [ACCEPTED SPECIES 9857:9WSZ7 nidx=null]
Namoitena namoiensis
 - Namoitena namoiensis (Cox, 1868) [SYNONYM SPECIES 9854:45LKB nidx=null parent=424KK]
 + Namoitena namoiensis (J. C. Cox, 1868) [SYNONYM SPECIES 9857:9WPVM nidx=null parent=424KK]
Nancibella quintalae
 - Nancibella quintalae (Cox, 1870) [ACCEPTED SPECIES 9854:45LQW nidx=null]
 + Nancibella quintalae (J. C. Cox, 1870) [ACCEPTED SPECIES 9857:9WPVN nidx=null]
Nanina venusta
 - Nanina venusta Beck, 1837 [SYNONYM SPECIES 9854:7S9CX nidx=null parent=HCHC]
 + Nanina venusta H. Beck, 1838 [SYNONYM SPECIES 9857:9WTRL nidx=null parent=HCHC]
Nassarius (Hima) pontisnovi
 - Nassarius (Hima) pontisnovi Cox, 1936 [SYNONYM SPECIES 9854:45RBK nidx=null parent=45RWZ]
 + Nassarius (Hima) pontisnovi L. R. Cox, 1936 [SYNONYM SPECIES 9857:9WPVY nidx=null parent=9WPVX]
Nassarius (Niotha) persicus
 - Nassarius (Niotha) persicus Cox, 1936 [SYNONYM SPECIES 9854:45RDD nidx=null parent=45RNB]
 + Nassarius (Niotha) persicus L. R. Cox, 1936 [SYNONYM SPECIES 9857:9WPW2 nidx=null parent=45RNB]
Nassarius persicus
 - Nassarius persicus Cox, 1936 [AMBIGUOUS_SYNONYM SPECIES 9854:45RWL nidx=null parent=45RNB]
 + Nassarius persicus L. R. Cox, 1936 [SYNONYM SPECIES 9857:9WPVZ nidx=null parent=45RNB]
Nassarius pontisnovi
 - Nassarius pontisnovi Cox, 1936 [ACCEPTED SPECIES 9854:45RWZ nidx=null]
 + Nassarius pontisnovi L. R. Cox, 1936 [ACCEPTED SPECIES 9857:9WPVX nidx=null]
Natatolana borealis
 - Natatolana borealis (Lilljeborg, 1851) [ACCEPTED SPECIES 9854:45TBP nidx=null]
 + Natatolana borealis (Liljeborg, 1851) [ACCEPTED SPECIES 9857:9WPW4 nidx=null]
Natica maculata
 - Natica maculata (von Salis, 1793) [AMBIGUOUS_SYNONYM SPECIES 9854:45TQ6 nidx=null parent=45TY6]
 + Natica maculata (Salis Marschlins, 1793) [SYNONYM SPECIES 9857:9WPW7 nidx=null parent=45TY6]
Navanax inermis
 - Navanax inermis (J. G. Cooper, 1862) [ACCEPTED SPECIES 9854:45VMC nidx=null]
 + Navanax inermis (J. G. Cooper, 1863) [ACCEPTED SPECIES 9857:9WPW8 nidx=null]
Neaera ornatissima
 - Neaera ornatissima [SYNONYM SPECIES 9854:6S5MF nidx=null parent=R5KG]
 + Neaera ornatissima (d'Orbigny, 1853) [SYNONYM SPECIES 9857:9WPWB nidx=null parent=R5KG]
Nedyopus montanus
 - Nedyopus montanus [ACCEPTED SPECIES 9854:464B7 nidx=null]
 + Nedyopus montanus (Verhoeff, 1939) [SYNONYM SPECIES 9857:9WPWC nidx=null parent=67PHC]
Neithea attockensis
 - Neithea attockensis Cox, 1935 [ACCEPTED SPECIES 9854:8ND3S nidx=null]
 + Neithea attockensis L. R. Cox, 1935 [ACCEPTED SPECIES 9857:9WTRN nidx=null]
Neochromadora izhorica
 - Neochromadora izhorica (Filipjev, 1929) [ACCEPTED SPECIES 9854:88RLL nidx=null]
 + Neochromadora izhorica (Filipjev, 1929) Schuurmans-Stekhoven, 1935 [ACCEPTED SPECIES 9857:9WPWG nidx=null]
Neodiaptomus diaphorus
 - Neodiaptomus diaphorus Kiefer, 1939 [SYNONYM SPECIES 9854:46G2Q nidx=null parent=46G34]
 + Neodiaptomus diaphorus Kiefer, 1935 [SYNONYM SPECIES 9857:9WPWJ nidx=null parent=46G34]
Neothauma dubium
 - Neothauma dubium (Cox, 1926) [ACCEPTED SPECIES 9854:6S9FX nidx=null]
 + Neothauma dubium (L. R. Cox, 1926) [ACCEPTED SPECIES 9857:9WPWW nidx=null]
Neothauma waylandi
 - Neothauma waylandi (Cox, 1926) [ACCEPTED SPECIES 9854:73XG8 nidx=null]
 + Neothauma waylandi (L. R. Cox, 1926) [ACCEPTED SPECIES 9857:9WPWX nidx=null]
Neveritis aridorum
 - Neveritis aridorum (Cox, 1866) [ACCEPTED SPECIES 9854:47BP6 nidx=null]
 + Neveritis aridorum (J. C. Cox, 1866) [ACCEPTED SPECIES 9857:9WPXF nidx=null]
Ngairea corticicola
 - Ngairea corticicola (Cox, 1866) [ACCEPTED SPECIES 9854:47C59 nidx=null]
 + Ngairea corticicola (J. C. Cox, 1866) [ACCEPTED SPECIES 9857:9WPXH nidx=null]
Ngairea murphyi
 - Ngairea murphyi (Cox, 1864) [ACCEPTED SPECIES 9854:47C5C nidx=null]
 + Ngairea murphyi (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WPXJ nidx=null]
Nicaisolopha tridacnaeformis
 - Nicaisolopha tridacnaeformis (Cox, 1927) [ACCEPTED SPECIES 9854:47CB2 nidx=null]
 + Nicaisolopha tridacnaeformis (L. R. Cox, 1927) [ACCEPTED SPECIES 9857:9WPXK nidx=null]
Nitor circumcinctus
 - Nitor circumcinctus (Cox, 1868) [ACCEPTED SPECIES 9854:73YSR nidx=null]
 + Nitor circumcinctus (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WPXM nidx=null]
Nitor graftonensis
 - Nitor graftonensis (Cox, 1864) [SYNONYM SPECIES 9854:73Z4R nidx=null parent=47JV4]
 + Nitor graftonensis (J. C. Cox, 1864) [SYNONYM SPECIES 9857:9WPXN nidx=null parent=47JV4]
Nitor kreffti
 - Nitor kreffti (Cox, 1864) [SYNONYM SPECIES 9854:6RZ4Q nidx=null parent=6VXCV]
 + Nitor kreffti (J. C. Cox, 1864) [SYNONYM SPECIES 9857:9WPXP nidx=null parent=9WQDN]
Nitor pudibundus
 - Nitor pudibundus (Cox, 1868) [ACCEPTED SPECIES 9854:6RZ52 nidx=null]
 + Nitor pudibundus (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WPXQ nidx=null]
Nododelphinulidae
 - Nododelphinulidae Cox, 1960 [ACCEPTED FAMILY 9854:7NK54 nidx=null]
 + Nododelphinulidae L. R. Cox, 1960 [ACCEPTED FAMILY 9857:9WLNW nidx=null]
Notochlamys hexactes
 - Notochlamys hexactes (Péron, 1819) [ACCEPTED SPECIES 9854:6SC26 nidx=null]
 + Notochlamys hexactes (Lamarck, 1819) [ACCEPTED SPECIES 9857:9WPY2 nidx=null]
Nototeredo norvagicus
 - Nototeredo norvagicus (Spengler, 1792) [SYNONYM SPECIES 9854:6SDD2 nidx=null parent=47YWT]
 + Nototeredo norvagicus [sic] [SYNONYM SPECIES 9857:9WPY9 nidx=null parent=47YWT]
Nototeredo norvegica
 - Nototeredo norvegica (Spengler, 1792) [SYNONYM SPECIES 9854:47YWV nidx=null parent=47YWT]
 + Nototeredo norvegica [sic [ [SYNONYM SPECIES 9857:9WPYB nidx=null parent=47YWT]
Nucula obliterata
 - Nucula obliterata sensu Knudsen, 1970 [SYNONYM SPECIES 9854:4832F nidx=null parent=482V6]
 + Nucula obliterata Dall, 1881 [SYNONYM SPECIES 9857:9WPYG nidx=null parent=482V6]
Nuculana corticata
 - Nuculana corticata [SYNONYM SPECIES 9854:483BZ nidx=null parent=39W5R]
 + Nuculana corticata (Møller, 1842) [SYNONYM SPECIES 9857:9WPYN nidx=null parent=39W5R]
Nuculana perluna
 - Nuculana perluna [SYNONYM SPECIES 9854:74CX6 nidx=null parent=74D96]
 + Nuculana perluna [sic] [SYNONYM SPECIES 9857:9WPYV nidx=null parent=74D96]
Nuculana perluna perluna
 - Nuculana perluna perluna [SYNONYM SUBSPECIES 9854:7KG34 nidx=null parent=74D96]
 + Nuculana perluna perluna [sic] [SYNONYM SUBSPECIES 9857:9WRCS nidx=null parent=74D96]
Nuculoma corbuloides
 - Nuculoma corbuloides [SYNONYM SPECIES 9854:483HR nidx=null parent=39W5Q]
 + Nuculoma corbuloides (Seguenza, 1877) [SYNONYM SPECIES 9857:9WPYZ nidx=null parent=39W5Q]
Obornella
 - Obornella Cox, 1959 [ACCEPTED GENUS 9854:7PB3H nidx=null]
 + Obornella L. R. Cox, 1959 [ACCEPTED GENUS 9857:9WSJ7 nidx=null]
Ocinebrina carvalhoi
 - Ocinebrina carvalhoi (Cox, 1936) [ACCEPTED SPECIES 9854:7SD3W nidx=null]
 + Ocinebrina carvalhoi (L. R. Cox, 1936) [ACCEPTED SPECIES 9857:9WPZV nidx=null]
Octophellia
 - Octophellia [ACCEPTED GENUS 9854:66P8 nidx=null]
 + Octophellia Andres, 1883 [ACCEPTED GENUS 9857:9WKMR nidx=null]
Odiellus remyi
 - Odiellus remyi (Doleschall, 1852) [ACCEPTED SPECIES 9854:7XJPQ nidx=null]
 + Odiellus remyi Roewer, 1923 [SYNONYM SPECIES 9857:9WP39 nidx=null parent=7WTSV]
Odontobunus pupillaris
 - Odontobunus pupillaris (Lawrence, 1963) [ACCEPTED SPECIES 9854:7XJR9 nidx=null]
 + Odontobunus pupillaris Lawrence, 1962 [ACCEPTED SPECIES 9857:9WP3B nidx=null]
Offachloritis dryanderensis
 - Offachloritis dryanderensis (Cox, 1872) [ACCEPTED SPECIES 9854:48YNB nidx=null]
 + Offachloritis dryanderensis (J. C. Cox, 1872) [ACCEPTED SPECIES 9857:9WQ22 nidx=null]
Oistotrigonia pavlovi
 - Oistotrigonia pavlovi (Stremooukhov, 1896) [ACCEPTED SPECIES 9854:4923Q nidx=null]
 + Oistotrigonia pavlovi (Strémooukhov, 1897) [ACCEPTED SPECIES 9857:9WQ23 nidx=null]
Oligovonones pailaensis
 - Oligovonones pailaensis González-Sponga, 2002 [ACCEPTED SPECIES 9854:7XKYT nidx=null]
 + Oligovonones pailaensis González-Sponga, 2003 [ACCEPTED SPECIES 9857:9WP3C nidx=null]
Oligovonones paramero
 - Oligovonones paramero González-Sponga, 2002 [ACCEPTED SPECIES 9854:7XKYV nidx=null]
 + Oligovonones paramero González-Sponga, 2003 [ACCEPTED SPECIES 9857:9WP3D nidx=null]
Onychostoma leptura
 - Onychostoma leptura (Boulenger, 1900) [ACCEPTED SPECIES 9854:99M6C nidx=null]
 + Onychostoma leptura (Boulenger, 1900) [ACCEPTED SPECIES 9857:9WQ28 nidx=null]
Ophiacantha frigida
 - Ophiacantha frigida Koehler, 1908 [ACCEPTED SPECIES 9854:49V3B nidx=null]
 + Ophiacantha frigida Koehler, 1907 [ACCEPTED SPECIES 9857:9WKNW nidx=null]
Ophiacantha opulenta
 - Ophiacantha opulenta Koehler, 1908 [ACCEPTED SPECIES 9854:74MYQ nidx=null]
 + Ophiacantha opulenta Koehler, 1907 [ACCEPTED SPECIES 9857:9WKNY nidx=null]
Ophiernus quadrispinus
 - Ophiernus quadrispinus Koehler, 1908 [ACCEPTED SPECIES 9854:49VVF nidx=null]
 + Ophiernus quadrispinus Koehler, 1907 [ACCEPTED SPECIES 9857:9WKNZ nidx=null]
Ophiocten ludwigi
 - Ophiocten ludwigi Koehler, 1908 [ACCEPTED SPECIES 9854:6SP39 nidx=null]
 + Ophiocten ludwigi Koehler, 1907 [ACCEPTED SPECIES 9857:9WKP7 nidx=null]
Ophioglypha anceps
 - Ophioglypha anceps Koehler, 1908 [SYNONYM SPECIES 9854:49XCD nidx=null parent=49YY7]
 + Ophioglypha anceps Koehler, 1907 [SYNONYM SPECIES 9857:9WKPB nidx=null parent=9WKPT]
Ophioglypha brucei
 - Ophioglypha brucei Koehler, 1908 [SYNONYM SPECIES 9854:49XCH nidx=null parent=7527C]
 + Ophioglypha brucei Koehler, 1907 [SYNONYM SPECIES 9857:9WKPC nidx=null parent=9WKPV]
Ophioglypha inops
 - Ophioglypha inops Koehler, 1908 [SYNONYM SPECIES 9854:49XDJ nidx=null parent=D4HC]
 + Ophioglypha inops Koehler, 1907 [SYNONYM SPECIES 9857:9WKPF nidx=null parent=9WKNR]
Ophioglypha lenticularis
 - Ophioglypha lenticularis Koehler, 1908 [SYNONYM SPECIES 9854:49XDV nidx=null parent=74PGD]
 + Ophioglypha lenticularis Koehler, 1907 [SYNONYM SPECIES 9857:9WKPG nidx=null parent=9WKQ4]
Ophioglypha mimaria
 - Ophioglypha mimaria Koehler, 1908 [SYNONYM SPECIES 9854:6SP3P nidx=null parent=6SPFV]
 + Ophioglypha mimaria Koehler, 1907 [SYNONYM SPECIES 9857:9WKPK nidx=null parent=9WKQ5]
Ophioglypha partita
 - Ophioglypha partita Koehler, 1908 [SYNONYM SPECIES 9854:6SP3J nidx=null parent=49YYW]
 + Ophioglypha partita Koehler, 1907 [SYNONYM SPECIES 9857:9WKPL nidx=null parent=9WKPW]
Ophioglypha scissa
 - Ophioglypha scissa Koehler, 1908 [SYNONYM SPECIES 9854:74P4Y nidx=null parent=49YYZ]
 + Ophioglypha scissa Koehler, 1907 [SYNONYM SPECIES 9857:9WKPM nidx=null parent=9WKPX]
Ophiomitrella ingrata
 - Ophiomitrella ingrata Koehler, 1908 [SYNONYM SPECIES 9854:49XWP nidx=null parent=9C7XX]
 + Ophiomitrella ingrata Koehler, 1907 [SYNONYM SPECIES 9857:9WKPR nidx=null parent=9WXT5]
Ophioplinthus anceps
 - Ophioplinthus anceps (Koehler, 1908) [ACCEPTED SPECIES 9854:49YY7 nidx=null]
 + Ophioplinthus anceps (Koehler, 1907) [ACCEPTED SPECIES 9857:9WKPT nidx=null]
Ophioplinthus brucei
 - Ophioplinthus brucei (Koehler, 1908) [ACCEPTED SPECIES 9854:7527C nidx=null]
 + Ophioplinthus brucei (Koehler, 1907) [ACCEPTED SPECIES 9857:9WKPV nidx=null]
Ophioplinthus partita
 - Ophioplinthus partita (Koehler, 1908) [ACCEPTED SPECIES 9854:49YYW nidx=null]
 + Ophioplinthus partita (Koehler, 1907) [ACCEPTED SPECIES 9857:9WKPW nidx=null]
Ophioplinthus scissa
 - Ophioplinthus scissa (Koehler, 1908) [ACCEPTED SPECIES 9854:49YYZ nidx=null]
 + Ophioplinthus scissa (Koehler, 1907) [ACCEPTED SPECIES 9857:9WKPX nidx=null]
Ophiosemnotes ingrata
 - Ophiosemnotes ingrata (Koehler, 1908) [ACCEPTED SPECIES 9854:9C7XX nidx=null]
 + Ophiosemnotes ingrata (Koehler, 1907) [ACCEPTED SPECIES 9857:9WXT5 nidx=null]
Ophiura lenticularis
 - Ophiura lenticularis (Koehler, 1908) [ACCEPTED SPECIES 9854:74PGD nidx=null]
 + Ophiura lenticularis (Koehler, 1907) [ACCEPTED SPECIES 9857:9WKQ4 nidx=null]
Ophiura mimaria
 - Ophiura mimaria (Koehler, 1908) [ACCEPTED SPECIES 9854:6SPFV nidx=null]
 + Ophiura mimaria (Koehler, 1907) [ACCEPTED SPECIES 9857:9WKQ5 nidx=null]
Ophiura ossiculata
 - Ophiura ossiculata (Koehler, 1908) [SYNONYM SPECIES 9854:8565J nidx=null parent=874MK]
 + Ophiura ossiculata (Koehler, 1907) [SYNONYM SPECIES 9857:9WKQ6 nidx=null parent=9WKQ7]
Ophiuroglypha ossiculata
 - Ophiuroglypha ossiculata (Koehler, 1908) [ACCEPTED SPECIES 9854:874MK nidx=null]
 + Ophiuroglypha ossiculata (Koehler, 1907) [ACCEPTED SPECIES 9857:9WKQ7 nidx=null]
Ophiurolepis brucei
 - Ophiurolepis brucei (Koehler, 1908) [SYNONYM SPECIES 9854:74PJJ nidx=null parent=7527C]
 + Ophiurolepis brucei (Koehler, 1907) [SYNONYM SPECIES 9857:9WKQ8 nidx=null parent=9WKPV]
Oriopsis cursoria
 - Oriopsis cursoria (Quatrefages, 1865) [ACCEPTED SPECIES 9854:74VHN nidx=null]
 + Oriopsis cursoria (Quatrefages, 1866) [SYNONYM SPECIES 9857:9WNH7 nidx=null parent=CZZ5]
Oriopsis eimeri
 - Oriopsis eimeri (Langerhans, 1881) [ACCEPTED SPECIES 9854:74VHM nidx=null]
 + Oriopsis eimeri (Langerhans, 1880) [SYNONYM SPECIES 9857:9WNH8 nidx=null parent=9WVLF]
Ornithopecten
 - Ornithopecten Cox, 1962 [ACCEPTED GENUS 9854:8TXNF nidx=null]
 + Ornithopecten L. R. Cox, 1962 [ACCEPTED GENUS 9857:9WSJ9 nidx=null]
Orodesmus gibber
 - Orodesmus gibber [ACCEPTED SPECIES 9854:7588H nidx=null]
 + Orodesmus gibber (Cook, 1896) [SYNONYM SPECIES 9857:9WQ34 nidx=null parent=325QT]
Orodesmus unicolor
 - Orodesmus unicolor Cook, 1895 [ACCEPTED SPECIES 9854:6T88F nidx=null]
 + Orodesmus unicolor Cook, 1896 [SYNONYM SPECIES 9857:9WQ35 nidx=null parent=6T88J]
Orpiella (Halozonites) retardata
 - Orpiella (Halozonites) retardata (Cox, 1870) [SYNONYM SPECIES 9854:7SK7D nidx=null parent=6T9G3]
 + Orpiella (Halozonites) retardata (J. C. Cox, 1870) [SYNONYM SPECIES 9857:9WQ37 nidx=null parent=9WQ36]
Orpiella compluviata
 - Orpiella compluviata (Cox, 1871) [ACCEPTED SPECIES 9854:7SK88 nidx=null]
 + Orpiella compluviata (J. C. Cox, 1872) [ACCEPTED SPECIES 9857:9WQ38 nidx=null]
Orpiella retardata
 - Orpiella retardata (Cox, 1870) [ACCEPTED SPECIES 9854:6T9G3 nidx=null]
 + Orpiella retardata (J. C. Cox, 1870) [ACCEPTED SPECIES 9857:9WQ36 nidx=null]
Orpiella retardata retardata
 - Orpiella retardata retardata (Cox, 1870) [ACCEPTED SUBSPECIES 9854:7TYTY nidx=null]
 + Orpiella retardata retardata (J. C. Cox, 1870) [ACCEPTED SUBSPECIES 9857:9WRCZ nidx=null]
Ostrea corbuloides
 - Ostrea corbuloides Danilo & Sandri, 1855 [SYNONYM SPECIES 9854:6TD5K nidx=null parent=75CW4]
 + Ostrea corbuloides Danilo & Sandri, 1856 [SYNONYM SPECIES 9857:9WQ3K nidx=null parent=75CW4]
Ostrea tridacnaeformis
 - Ostrea tridacnaeformis Cox, 1927 [SYNONYM SPECIES 9854:75D9X nidx=null parent=47CB2]
 + Ostrea tridacnaeformis L. R. Cox, 1927 [SYNONYM SPECIES 9857:9WQ3L nidx=null parent=9WPXK]
Otapiria dissimilis
 - Otapiria dissimilis (Cox, 1878) [ACCEPTED SPECIES 9854:8T6JH nidx=null]
 + Otapiria dissimilis (J. C. Cox, 1878) [ACCEPTED SPECIES 9857:9WTT6 nidx=null]
Ovojassini
 - Ovojassini Hamilton, 1990 [ACCEPTED TRIBE 9854:8JKCY nidx=null]
 + Ovojassini Hamilton, 1990 [SYNONYM SUBFAMILY 9857:9WSBB nidx=null parent=8JK55]
Ovulum inflexum
 - Ovulum inflexum G. B. Sowerby I, 1832 [SYNONYM SPECIES 9854:6TDGR nidx=null parent=4XFGH]
 + Ovulum inflexum G. B. Sowerby I, 1833 [SYNONYM SPECIES 9857:9WQ3M nidx=null parent=4XFGH]
Ovulum rufum
 - Ovulum rufum G. B. Sowerby I, 1832 [SYNONYM SPECIES 9854:75DGS nidx=null parent=4XFGH]
 + Ovulum rufum G. B. Sowerby I, 1833 [SYNONYM SPECIES 9857:9WQ3N nidx=null parent=4XFGH]
Pachylobos
 - Pachylobos Piza Jr., 1940 [ACCEPTED GENUS 9854:7PRBQ nidx=null]
 + Pachylobos Piza, 1940 [ACCEPTED GENUS 9857:9WNYP nidx=null]
Pachylobos areolatus
 - Pachylobos areolatus Piza Jr., 1940 [SYNONYM SPECIES 9854:7XT8V nidx=null parent=7XT8W]
 + Pachylobos areolatus Piza, 1940 [SYNONYM SPECIES 9857:9WP3J nidx=null parent=7XT8W]
Pachyloides calcartibialis
 - Pachyloides calcartibialis Roewer, 1917 [ACCEPTED SPECIES 9854:7XT96 nidx=null]
 + Pachyloides calcartibialis Roewer, 1919 [ACCEPTED SPECIES 9857:9WP3K nidx=null]
Pachymelania fusca quadriseriata
 - Pachymelania fusca quadriseriata (Gray, 1831) [SYNONYM SUBSPECIES 9854:7KH69 nidx=null parent=4BSRR]
 + Pachymelania fusca quadriseriata (J. E. Gray, 1833) [SYNONYM SUBSPECIES 9857:9WRD3 nidx=null parent=4BSRR]
Paecilaema paecilaema
 - Paecilaema paecilaema González-Sponga, 2002 [ACCEPTED SPECIES 9854:7XTKG nidx=null]
 + Paecilaema paecilaema González-Sponga, 2003 [ACCEPTED SPECIES 9857:9WP3X nidx=null]
Pagodulina subdola orientalis
 - Pagodulina subdola orientalis Hausdorf, 2006 [ACCEPTED SUBSPECIES 9854:7TYYZ nidx=null]
 + Pagodulina subdola orientalis Hausdorf, 1996 [ACCEPTED SUBSPECIES 9857:9WV86 nidx=null]
Palaeomutela
 - Palaeomutela Amalitsky, 1892 [ACCEPTED GENUS 9854:7PBKP nidx=null]
 + Palaeomutela Amalitsky, 1891 [ACCEPTED GENUS 9857:9WMHZ nidx=null]
Palaina (Palaina) brazieri
 - Palaina (Palaina) brazieri (Cox, 1870) [SYNONYM SPECIES 9854:7SL5M nidx=null parent=4C33Q]
 + Palaina (Palaina) brazieri (J. C. Cox, 1870) [SYNONYM SPECIES 9857:9WQ3R nidx=null parent=9WQ3S]
Palaina (Palaina) wisemani
 - Palaina (Palaina) wisemani (Cox, 1870) [SYNONYM SPECIES 9854:7SL7C nidx=null parent=4C36S]
 + Palaina (Palaina) wisemani (J. C. Cox, 1870) [SYNONYM SPECIES 9857:9WQ3T nidx=null parent=9WQ3V]
Palaina brazieri
 - Palaina brazieri (Cox, 1870) [ACCEPTED SPECIES 9854:4C33Q nidx=null]
 + Palaina brazieri (J. C. Cox, 1870) [ACCEPTED SPECIES 9857:9WQ3S nidx=null]
Palaina wisemani
 - Palaina wisemani (Cox, 1870) [ACCEPTED SPECIES 9854:4C36S nidx=null]
 + Palaina wisemani (J. C. Cox, 1870) [ACCEPTED SPECIES 9857:9WQ3V nidx=null]
Pallidelix greenhilli
 - Pallidelix greenhilli (Cox, 1866) [ACCEPTED SPECIES 9854:4C5JC nidx=null]
 + Pallidelix greenhilli (J. C. Cox, 1866) [ACCEPTED SPECIES 9857:9WQ3W nidx=null]
Palmoxytoma
 - Palmoxytoma Cox, 1962 [ACCEPTED GENUS 9854:7PBMV nidx=null]
 + Palmoxytoma L. R. Cox, 1962 [ACCEPTED GENUS 9857:9WMJ3 nidx=null]
Pangasius larnaudii
 - Pangasius larnaudii Bocourt, 1866 [ACCEPTED SPECIES 9854:9HFDN nidx=null]
 + Pangasius larnaudii Bocourt, 1866 [ACCEPTED SPECIES 9857:9WQ44 nidx=null]
Panopaea norvegica
 - Panopaea norvegica Middendorf, 1849 [SYNONYM SPECIES 9854:6TMB2 nidx=null parent=4CG3S]
 + Panopaea norvegica (Spengler, 1793) [SYNONYM SPECIES 9857:9WQ45 nidx=null parent=4CG42]
 + Panopaea norvegica (Spengler, 1793) [SYNONYM SPECIES 9857:9WQ46 nidx=null parent=4CG3S]
Paphia gallus
 - Paphia gallus [SYNONYM SPECIES 9854:4CJQK nidx=null parent=4N25K]
 + Paphia gallus (Gmelin, 1791) [SYNONYM SPECIES 9857:9WQ4S nidx=null parent=4N25K]
Papuina (Municeps) redempta
 - Papuina (Municeps) redempta (Cox, 1873) [SYNONYM SPECIES 9854:4CLN4 nidx=null parent=4CLQM]
 + Papuina (Municeps) redempta (J. C. Cox, 1873) [SYNONYM SPECIES 9857:9WQ4Y nidx=null parent=9WQ4Z]
Papuina (Papustyla) hindei
 - Papuina (Papustyla) hindei (Cox, 1886) [SYNONYM SPECIES 9854:9WK83 nidx=null parent=4CLVG]
 + Papuina (Papustyla) hindei (J. C. Cox, 1886) [SYNONYM SPECIES 9857:9WZ79 nidx=null parent=9WQ59]
Papuina alfredi
 - Papuina alfredi (Cox, 1871) [SYNONYM SPECIES 9854:7SLMG nidx=null parent=3YTR2]
 + Papuina alfredi (J. C. Cox, 1871) [SYNONYM SPECIES 9857:9WTTJ nidx=null parent=9WPMB]
Papuina chancei
 - Papuina chancei (Cox, 1870) [SYNONYM SPECIES 9854:4CLNP nidx=null parent=6TNP5]
 + Papuina chancei (J. C. Cox, 1870) [SYNONYM SPECIES 9857:9WQ52 nidx=null parent=9WQ58]
Papuina gelata
 - Papuina gelata (Cox, 1873) [ACCEPTED SPECIES 9854:4CLP9 nidx=null]
 + Papuina gelata (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WQ53 nidx=null]
Papuina guadalcanarensis
 - Papuina guadalcanarensis (Cox, 1872) [ACCEPTED SPECIES 9854:4CLPD nidx=null]
 + Papuina guadalcanarensis (J. C. Cox, 1872) [ACCEPTED SPECIES 9857:9WQ54 nidx=null]
Papuina macfarlanei
 - Papuina macfarlanei (Cox, 1873) [SYNONYM SPECIES 9854:4CLPZ nidx=null parent=3YTRG]
 + Papuina macfarlanei (J. C. Cox, 1873) [SYNONYM SPECIES 9857:9WQ55 nidx=null parent=9WPMC]
Papuina novaegeorgiensis
 - Papuina novaegeorgiensis (Cox, 1870) [SYNONYM SPECIES 9854:4CLQD nidx=null parent=3YTRK]
 + Papuina novaegeorgiensis (J. C. Cox, 1870) [SYNONYM SPECIES 9857:9WQ56 nidx=null parent=9WPMD]
Papuina redempta
 - Papuina redempta (Cox, 1873) [ACCEPTED SPECIES 9854:4CLQM nidx=null]
 + Papuina redempta (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WQ4Z nidx=null]
Papuina splendescens
 - Papuina splendescens (Cox, 1866) [ACCEPTED SPECIES 9854:4CLQT nidx=null]
 + Papuina splendescens (J. C. Cox, 1866) [ACCEPTED SPECIES 9857:9WQ57 nidx=null]
Papustyla chancei
 - Papustyla chancei (Cox, 1870) [ACCEPTED SPECIES 9854:6TNP5 nidx=null]
 + Papustyla chancei (J. C. Cox, 1870) [ACCEPTED SPECIES 9857:9WQ58 nidx=null]
Papustyla hindei
 - Papustyla hindei (Cox, 1886) [ACCEPTED SPECIES 9854:4CLVG nidx=null]
 + Papustyla hindei (J. C. Cox, 1886) [ACCEPTED SPECIES 9857:9WQ59 nidx=null]
Parablocratus
 - Parablocratus Fieber, 1868 [SYNONYM GENUS 9854:8RGQY nidx=null parent=8R4BQ]
 + Parablocratus Fieber, 1866 [SYNONYM GENUS 9857:9WSJL nidx=null parent=8R4BQ]
Parabolacratis
 - Parabolacratis Fieber, 1868 [SYNONYM GENUS 9854:8RGQZ nidx=null parent=8R4BQ]
 + Parabolacratis Fieber, 1866 [SYNONYM GENUS 9857:9WSJM nidx=null parent=8R4BQ]
Parabolacratus
 - Parabolacratus Fieber, 1868 [SYNONYM GENUS 9854:8RGR2 nidx=null parent=8R4BQ]
 + Parabolacratus Fieber, 1866 [SYNONYM GENUS 9857:9WSJN nidx=null parent=8R4BQ]
Parabolocrates
 - Parabolocrates Fieber, 1868 [SYNONYM GENUS 9854:8RGR4 nidx=null parent=8R4BQ]
 + Parabolocrates Fieber, 1866 [SYNONYM GENUS 9857:9WSJP nidx=null parent=8R4BQ]
Parabolocratus
 - Parabolocratus Fieber, 1868 [SYNONYM GENUS 9854:8R4D6 nidx=null parent=8R4BQ]
 + Parabolocratus Fieber, 1866 [SYNONYM GENUS 9857:9WSJQ nidx=null parent=8R4BQ]
Paraboloiratus
 - Paraboloiratus Fieber, 1868 [SYNONYM GENUS 9854:8RGR5 nidx=null parent=8R4BQ]
 + Paraboloiratus Fieber, 1866 [SYNONYM GENUS 9857:9WSJR nidx=null parent=8R4BQ]
Parabristoweia
 - Parabristoweia Piza, 1938 [SYNONYM GENUS 9854:7PRN6 nidx=null parent=7PL8Z]
 + Parabristoweia Piza Jr., 1938 [SYNONYM GENUS 9857:9WNYQ nidx=null parent=7PL8Z]
Parabristoweia maculipalpi
 - Parabristoweia maculipalpi Piza, 1938 [SYNONYM SPECIES 9854:7XVDV nidx=null parent=7WPZK]
 + Parabristoweia maculipalpi Piza Jr., 1938 [SYNONYM SPECIES 9857:9WP42 nidx=null parent=9WP2F]
Paradilepis macracantha
 - Paradilepis macracantha Joyeux & Baer, 1935. [SYNONYM SPECIES 9854:9J3TG nidx=null parent=CSLS]
 + Paradilepis macracantha Joyeux & Baer, 1935. [SYNONYM SPECIES 9857:9WY89 nidx=null parent=CSLS]
Parageaya vittata
 - Parageaya vittata (Mello-Leitão, 1940) [ACCEPTED SPECIES 9854:7XW9W nidx=null]
 + Parageaya vittata (Mello-Leitão, 1939) [ACCEPTED SPECIES 9857:9WP43 nidx=null]
Parainoceramus
 - Parainoceramus Cox, 1954 [ACCEPTED GENUS 9854:9LFTW nidx=null]
 + Parainoceramus L. R. Cox, 1955 [ACCEPTED GENUS 9857:9WSJT nidx=null]
Paralaoma morti
 - Paralaoma morti (Cox, 1864) [ACCEPTED SPECIES 9854:9CBTJ nidx=null]
 + Paralaoma morti (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WXT7 nidx=null]
Paramonohystera levicula
 - Paramonohystera levicula (Lorenzen, 1973) Lorenzen, 1977 [ACCEPTED SPECIES 9854:8GFVH nidx=null]
 + Paramonohystera levicula (Lorenzen, 1972) Lorenzen, 1977 [ACCEPTED SPECIES 9857:9WQ6M nidx=null]
Parasauvagesia cappadociensis
 - Parasauvagesia cappadociensis Cox, 1960 [SYNONYM SPECIES 9854:7SM6Y nidx=null parent=7RRW9]
 + Parasauvagesia cappadociensis L. R. Cox, 1960 [SYNONYM SPECIES 9857:9WTTQ nidx=null parent=7RRW9]
Parastomachoglossa taylori
 - Parastomachoglossa taylori Meyl, 1957 [ACCEPTED SPECIES 9854:8GG2X nidx=null]
 + Parastomachoglossa taylori (Meyl, 1957) Coomans & Loof, 1986 [ACCEPTED SPECIES 9857:9WQ6V nidx=null]
Parmavitrina megastoma
 - Parmavitrina megastoma (Cox, 1868) [ACCEPTED SPECIES 9854:4DNGH nidx=null]
 + Parmavitrina megastoma (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WQ73 nidx=null]
Parmavitrina planilabris
 - Parmavitrina planilabris (Cox, 1866) [ACCEPTED SPECIES 9854:4DNGJ nidx=null]
 + Parmavitrina planilabris (J. C. Cox, 1866) [ACCEPTED SPECIES 9857:9WQ74 nidx=null]
Partula occidentalis
 - Partula occidentalis Hedley, 1892 [SYNONYM SPECIES 9854:75T4C nidx=null parent=764SK]
 + Partula occidentalis Hedley, 1891 [SYNONYM SPECIES 9857:9WQ76 nidx=null parent=764SK]
Partula peasei
 - Partula peasei Cox, 1872 [SYNONYM SPECIES 9854:7654D nidx=null parent=36M5S]
 + Partula peasei J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WQ77 nidx=null parent=9WNKZ]
Parvamussium lucidum
 - Parvamussium lucidum [SYNONYM SPECIES 9854:7656N nidx=null parent=4MTLW]
 + Parvamussium lucidum (Jeffreys, 1873) [SYNONYM SPECIES 9857:9WQ78 nidx=null parent=4MTLW]
Pecten tranquebaricus
 - Pecten tranquebaricus [SYNONYM SPECIES 9854:6TVLC nidx=null parent=7G4ZB]
 + Pecten tranquebaricus [sic] [SYNONYM SPECIES 9857:9WQ7D nidx=null parent=7G4ZB]
Pectunculus taylorianus
 - Pectunculus taylorianus Melvill & Standen, 1907 [SYNONYM SPECIES 9854:6TWZM nidx=null parent=3GFHK]
 + Pectunculus taylorianus [sic] [SYNONYM SPECIES 9857:9WQ7F nidx=null parent=3GFHK]
Pediopsis malayana
 - Pediopsis malayana Tishechkin, 1997 [ACCEPTED SPECIES 9854:75XTX nidx=null]
 + Pediopsis malayana Tishechkin, 1998 [ACCEPTED SPECIES 9857:9WR9B nidx=null]
Pedum pedum
 - Pedum pedum [SYNONYM SPECIES 9854:6TXTZ nidx=null parent=6TY5Z]
 + Pedum pedum (Röding, 1798) [SYNONYM SPECIES 9857:9WQ7H nidx=null parent=6TY5Z]
Pemphigus (Pemphigus) roumanicus
 - Pemphigus (Pemphigus) roumanicus [ACCEPTED SPECIES 9854:9HJXQ nidx=null]
 + Pemphigus (Pemphigus) roumanicus [ACCEPTED SPECIES 9857:9WT24 nidx=null]
Pergamidiidae
 - Pergamidiidae Cox, 1964 [ACCEPTED FAMILY 9854:7NWVG nidx=null]
 + Pergamidiidae L. R. Cox, 1964 [ACCEPTED FAMILY 9857:9WLNY nidx=null]
Periploma largillarta
 - Periploma largillarta [SYNONYM SPECIES 9854:4F3F9 nidx=null parent=4F3F8]
 + Periploma largillarta [sic] [SYNONYM SPECIES 9857:9WQ7S nidx=null parent=4F3F8]
Pernagera albanensis
 - Pernagera albanensis (Cox, 1868) [ACCEPTED SPECIES 9854:4F6VC nidx=null]
 + Pernagera albanensis (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WQ7V nidx=null]
Pernagera tasmaniae
 - Pernagera tasmaniae (Cox, 1868) [SYNONYM SPECIES 9854:4F6VJ nidx=null parent=54YR5]
 + Pernagera tasmaniae (J. C. Cox, 1868) [SYNONYM SPECIES 9857:9WQ7W nidx=null parent=9WQTC]
Petropomatinae
 - Petropomatinae Cox, 1960 [ACCEPTED SUBFAMILY 9854:7NXYM nidx=null]
 + Petropomatinae L. R. Cox, 1960 [ACCEPTED SUBFAMILY 9857:9WLQ3 nidx=null]
Phalangium hellwigii
 - Phalangium hellwigii Panzer, 1794 [SYNONYM SPECIES 9854:7Y4GK nidx=null parent=7WRHT]
 + Phalangium hellwigii Panzer, 1793 [SYNONYM SPECIES 9857:9WP47 nidx=null parent=9WP2J]
Phalium (Semicassis) vector
 - Phalium (Semicassis) vector R. T. Abbott, 1993 [SYNONYM SPECIES 9854:9Q62C nidx=null parent=4WG7M]
 + Phalium (Semicassis) vector R. T. Abbott, 1993 [SYNONYM SPECIES 9857:9WTVC nidx=null parent=4WG7M]
Phoeniciloricus
 - Phoeniciloricus [ACCEPTED GENUS 9854:6NV9 nidx=null]
 + Phoeniciloricus Neves & Kristensen, 2014 [ACCEPTED GENUS 9857:9WKMV nidx=null]
Pholadomya arata
 - Pholadomya arata sensu Locard, 1898, not Verrill & S.Smith, 1881 [AMBIGUOUS_SYNONYM SPECIES 9854:7SPJJ nidx=null parent=4C938]
 + Pholadomya arata Verrill & S. Smith, 1881 [AMBIGUOUS_SYNONYM SPECIES 9857:6VBM7 nidx=null parent=4C938]
Phyllidia xishaensis
 - Phyllidia xishaensis Lin, 1983 [SYNONYM SPECIES 9854:4H4YY nidx=null parent=4H52M]
 + Phyllidia xishaensis G.-Y. Lin, 1983 [SYNONYM SPECIES 9857:9WQ8G nidx=null parent=9WQ8H]
Phyllidiopsis xishaensis
 - Phyllidiopsis xishaensis (Lin, 1983) [ACCEPTED SPECIES 9854:4H52M nidx=null]
 + Phyllidiopsis xishaensis (G.-Y. Lin, 1983) [ACCEPTED SPECIES 9857:9WQ8H nidx=null]
Phylloxera globosa
 - Phylloxera globosa (Shimer, 1867) [ACCEPTED SPECIES 9854:4HD9C nidx=null]
 + Phylloxera globosa (Shimer, 1867) [ACCEPTED SPECIES 9857:9WRFW nidx=null]
 + Phylloxera globosa (Shimer, 1867) [AMBIGUOUS_SYNONYM SPECIES 9857:9WRFX nidx=null parent=9H339]
Pila colchesteri
 - Pila colchesteri Cox, 1933 [ACCEPTED SPECIES 9854:4HSCZ nidx=null]
 + Pila colchesteri L. R. Cox, 1933 [ACCEPTED SPECIES 9857:9WQ8J nidx=null]
Pinctada anomoides
 - Pinctada anomoides [SYNONYM SPECIES 9854:4HY7D nidx=null parent=4HY7W]
 + Pinctada anomoides [sic] [SYNONYM SPECIES 9857:9WQ9P nidx=null parent=4HY7W]
Pisania luctuosa
 - Pisania luctuosa (Tapparone Canefri, 1880) [ACCEPTED SPECIES 9854:4J8GF nidx=null]
 + Pisania luctuosa Tapparone Canefri, 1877 [ACCEPTED SPECIES 9857:9WQ9S nidx=null]
Placocharis kreftii
 - Placocharis kreftii (Cox, 1872) [ACCEPTED SPECIES 9854:4JDQ8 nidx=null]
 + Placocharis kreftii (J. C. Cox, 1872) [ACCEPTED SPECIES 9857:9WQ9Y nidx=null]
Placostylus (Charis) hargravesi
 - Placostylus (Charis) hargravesi (Cox, 1871) [SYNONYM SPECIES 9854:77NDR nidx=null parent=3CD7B]
 + Placostylus (Charis) hargravesi (J. C. Cox, 1871) [SYNONYM SPECIES 9857:9WQ9Z nidx=null parent=9WNQW]
Placostylus (Placocharis) hargravesi
 - Placostylus (Placocharis) hargravesi (Cox, 1871) [SYNONYM SPECIES 9854:6VNBW nidx=null parent=3CD7B]
 + Placostylus (Placocharis) hargravesi (J. C. Cox, 1871) [SYNONYM SPECIES 9857:9WQB2 nidx=null parent=9WNQW]
Placostylus (Proaspastus) sanchristovalensis
 - Placostylus (Proaspastus) sanchristovalensis (Cox, 1870) [SYNONYM SPECIES 9854:6VNBV nidx=null parent=6H8PD]
 + Placostylus (Proaspastus) sanchristovalensis (J. C. Cox, 1870) [SYNONYM SPECIES 9857:9WQB4 nidx=null parent=9WNQX]
Placostylus sanchristovalensis
 - Placostylus sanchristovalensis (Cox, 1870) [SYNONYM SPECIES 9854:77NCC nidx=null parent=6H8PD]
 + Placostylus sanchristovalensis (J. C. Cox, 1870) [SYNONYM SPECIES 9857:9WQB3 nidx=null parent=9WNQX]
Placostylus scottii
 - Placostylus scottii (Cox, 1873) [SYNONYM SPECIES 9854:6VNCF nidx=null parent=3CD7F]
 + Placostylus scottii (J. C. Cox, 1873) [SYNONYM SPECIES 9857:9WQB5 nidx=null parent=9WNQY]
Placunanomia zealandica
 - Placunanomia zealandica sensu Gray, 1850 [SYNONYM SPECIES 9854:6VNG4 nidx=null parent=443SZ]
 + Placunanomia zealandica [sic] [SYNONYM SPECIES 9857:9WQB6 nidx=null parent=443SZ]
Plaesiorrhina septa sellata
 - Plaesiorrhina septa sellata Kraatz, 1880 [SYNONYM INFRASPECIFIC_NAME 9854:7Z9HN nidx=null parent=7ZCN8]
 + Plaesiorrhina septa sellata Kraatz, 1880 [SYNONYM INFRASPECIFIC_NAME 9857:7HRW3 nidx=null parent=6TYFQ]
Planispira leucocheila
 - Planispira leucocheila (Cox, 1868) [SYNONYM SPECIES 9854:4JK2P nidx=null parent=7FLFW]
 + Planispira leucocheila (J. C. Cox, 1868) [SYNONYM SPECIES 9857:9WQB9 nidx=null parent=9WR3Z]
Planktonemertes agassizi
 - Planktonemertes agassizi ? [SYNONYM SPECIES 9854:9KCDP nidx=null parent=8549B]
 + Planktonemertes agassizi ? [SYNONYM SPECIES 9857:9WQBB nidx=null parent=8549B]
Platymelania bifidicincta
 - Platymelania bifidicincta (Cox, 1926) [SYNONYM SPECIES 9854:8NF88 nidx=null parent=4M35L]
 + Platymelania bifidicincta (L. R. Cox, 1926) [SYNONYM SPECIES 9857:9WTWM nidx=null parent=9WQDJ]
Platymelania brevissima
 - Platymelania brevissima (Cox, 1926) [SYNONYM SPECIES 9854:8NCN7 nidx=null parent=4M35M]
 + Platymelania brevissima (L. R. Cox, 1926) [SYNONYM SPECIES 9857:9WTWN nidx=null parent=9WQDK]
Platypleura inglisi
 - Platypleura inglisi Ollenbach, 1929 [ACCEPTED SPECIES 9854:4JVWL nidx=null]
 + Platypleura inglisi Ollenbach, 1928 [ACCEPTED SPECIES 9857:9WTWV nidx=null]
Pleiodon aswanensis
 - Pleiodon aswanensis (Cox, 1955) [ACCEPTED SPECIES 9854:877NT nidx=null]
 + Pleiodon aswanensis (L. R. Cox, 1955) [ACCEPTED SPECIES 9857:9WTWW nidx=null]
Pleiodon attiai
 - Pleiodon attiai (Cox, 1955) [ACCEPTED SPECIES 9854:879X3 nidx=null]
 + Pleiodon attiai (L. R. Cox, 1955) [ACCEPTED SPECIES 9857:9WTWX nidx=null]
Pleurophyllidiopsis orientalis
 - Pleurophyllidiopsis orientalis Lin, 1981 [ACCEPTED SPECIES 9854:4KC9F nidx=null]
 + Pleurophyllidiopsis orientalis G.Y. Lin, 1981 [ACCEPTED SPECIES 9857:9WQCJ nidx=null]
Pleurophyllidiopsis tsingdaoensis
 - Pleurophyllidiopsis tsingdaoensis Lin, 1981 [ACCEPTED SPECIES 9854:4KC9G nidx=null]
 + Pleurophyllidiopsis tsingdaoensis G.Y. Lin, 1981 [ACCEPTED SPECIES 9857:9WQCK nidx=null]
Pleuropoma gladstonensis
 - Pleuropoma gladstonensis (Cox, 1864) [ACCEPTED SPECIES 9854:4KCBP nidx=null]
 + Pleuropoma gladstonensis (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WQCL nidx=null]
Pleuropoma jana
 - Pleuropoma jana (Cox, 1872) [ACCEPTED SPECIES 9854:4KCBR nidx=null]
 + Pleuropoma jana (J. C. Cox, 1872) [ACCEPTED SPECIES 9857:9WQCM nidx=null]
Pleurotomaria spilsbiensis
 - Pleurotomaria spilsbiensis Cox, 1960 [SYNONYM SPECIES 9854:7SS2X nidx=null parent=7SS2W]
 + Pleurotomaria spilsbiensis L. R. Cox, 1960 [SYNONYM SPECIES 9857:9WTWY nidx=null parent=9WTWZ]
Pleurotomaria spilsbyensis
 - Pleurotomaria spilsbyensis Cox, 1960 [ACCEPTED SPECIES 9854:7SS2W nidx=null]
 + Pleurotomaria spilsbyensis L. R. Cox, 1960 [ACCEPTED SPECIES 9857:9WTWZ nidx=null]
Podocopa
 - Podocopa Sars, 1866 [ACCEPTED SUBCLASS 9854:84JPD nidx=null]
 + Podocopa Mueller, 1894 [ACCEPTED SUBCLASS 9857:9WLLK nidx=null]
Polycordia jeffreysi
 - Polycordia jeffreysi [SYNONYM SPECIES 9854:6W4FB nidx=null parent=4KXTT]
 + Polycordia jeffreysi [sic] [SYNONYM SPECIES 9857:9WQCZ nidx=null parent=4KXTT]
Pommerhelix duralensis
 - Pommerhelix duralensis (Cox, 1868) [ACCEPTED SPECIES 9854:4LR3L nidx=null]
 + Pommerhelix duralensis (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WQD5 nidx=null]
Pommerhelix exocarpi
 - Pommerhelix exocarpi (Cox, 1868) [ACCEPTED SPECIES 9854:4LR3M nidx=null]
 + Pommerhelix exocarpi (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WQD6 nidx=null]
Pommerhelix mastersi
 - Pommerhelix mastersi (Cox, 1864) [ACCEPTED SPECIES 9854:4LR3P nidx=null]
 + Pommerhelix mastersi (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WQD7 nidx=null]
Portachuelo
 - Portachuelo González-Sponga, 2002 [ACCEPTED GENUS 9854:7PVGP nidx=null]
 + Portachuelo González-Sponga, 2003 [ACCEPTED GENUS 9857:9WNYT nidx=null]
Portachuelo granuloso
 - Portachuelo granuloso González-Sponga, 2002 [ACCEPTED SPECIES 9854:7YF5C nidx=null]
 + Portachuelo granuloso González-Sponga, 2003 [ACCEPTED SPECIES 9857:9WP4H nidx=null]
Portlandia frigida
 - Portlandia frigida [SYNONYM SPECIES 9854:4M24M nidx=null parent=5CS6M]
 + Portlandia frigida (Torell, 1859) [SYNONYM SPECIES 9857:9WQDG nidx=null parent=5CS6M]
Posorites conscendens
 - Posorites conscendens (Cox, 1866) [ACCEPTED SPECIES 9854:4M2VK nidx=null]
 + Posorites conscendens (J. C. Cox, 1866) [ACCEPTED SPECIES 9857:9WQDH nidx=null]
Potadoma bifidicincta
 - Potadoma bifidicincta (Cox, 1926) [ACCEPTED SPECIES 9854:4M35L nidx=null]
 + Potadoma bifidicincta (L. R. Cox, 1926) [ACCEPTED SPECIES 9857:9WQDJ nidx=null]
Potadoma brevissima
 - Potadoma brevissima (Cox, 1926) [ACCEPTED SPECIES 9854:4M35M nidx=null]
 + Potadoma brevissima (L. R. Cox, 1926) [ACCEPTED SPECIES 9857:9WQDK nidx=null]
Pravonitor kreffti
 - Pravonitor kreffti (Cox, 1864) [ACCEPTED SPECIES 9854:6VXCV nidx=null]
 + Pravonitor kreffti (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WQDN nidx=null]
Primitiopsidae
 - Primitiopsidae Schwartz, 1936 [ACCEPTED FAMILY 9854:858BF nidx=null]
 + Primitiopsidae Swartz, 1936 [ACCEPTED FAMILY 9857:9WLP3 nidx=null]
Procerithium westhayensis
 - Procerithium westhayensis Cox, 1936 [SYNONYM SPECIES 9854:8VLN3 nidx=null parent=8VLJX]
 + Procerithium westhayensis L. R. Cox, 1936 [SYNONYM SPECIES 9857:9WTXQ nidx=null parent=9WTDV]
Proconulidae
 - Proconulidae Cox, 1960 [ACCEPTED FAMILY 9854:7NKMR nidx=null]
 + Proconulidae L. R. Cox, 1960 [ACCEPTED FAMILY 9857:9WLP4 nidx=null]
Progonyleptoidellus
 - Progonyleptoidellus Piza Jr., 1940 [ACCEPTED GENUS 9854:7PVPZ nidx=null]
 + Progonyleptoidellus Piza, 1940 [ACCEPTED GENUS 9857:9WNYV nidx=null]
Progonyleptoidellus bocaina
 - Progonyleptoidellus bocaina Benedetti & Pinto-da-Rocha, 2020 [ACCEPTED SPECIES 9854:7YGQL nidx=null]
 + Progonyleptoidellus bocaina Benedetti & Pinto-da-Rocha, 2019 [ACCEPTED SPECIES 9857:9WP4M nidx=null]
Progonyleptoidellus picinguaba
 - Progonyleptoidellus picinguaba Benedetti & Pinto-da-Rocha, 2020 [ACCEPTED SPECIES 9854:7YGQN nidx=null]
 + Progonyleptoidellus picinguaba Benedetti & Pinto-da-Rocha, 2019 [ACCEPTED SPECIES 9857:9WP4N nidx=null]
Pronoella nortonensis
 - Pronoella nortonensis Cox, 1944 [SYNONYM SPECIES 9854:9H4KZ nidx=null parent=9H45W]
 + Pronoella nortonensis L. R. Cox, 1944 [SYNONYM SPECIES 9857:9WZ3L nidx=null parent=9WZ3K]
Prostygnus stellatus
 - Prostygnus stellatus Villarreal & Kury, 2021 [ACCEPTED SPECIES 9854:7YH5X nidx=null]
 + Prostygnus stellatus Villarreal & Kury, 2022 [ACCEPTED SPECIES 9857:9WP4Q nidx=null]
Protaetia (Potosia) hieroglyphica alboflagellata
 - Protaetia (Potosia) hieroglyphica alboflagellata (Motschulsky, 1849) [ACCEPTED SUBSPECIES 9854:5KP8L nidx=null]
 + Protaetia (Potosia) hieroglyphica alboflagellata (Olsoufieff, 1916) [ACCEPTED SUBSPECIES 9857:9WNWY nidx=null]
Psammotreta maluccensis
 - Psammotreta maluccensis (Martens, 1865) [ACCEPTED SPECIES 9854:4NDBW nidx=null]
 + Psammotreta maluccensis [sic] [SYNONYM SPECIES 9857:9WQF4 nidx=null parent=3WZYW]
Pseudechiniscus sinensis
 - Pseudechiniscus sinensis (Rahm, 1932) [ACCEPTED SPECIES 9854:4NM2G nidx=null]
 + Pseudechiniscus sinensis Rahm, 1937 [SYNONYM SPECIES 9857:9WQFY nidx=null parent=9WMP3]
Pseudobellardia
 - Pseudobellardia Cox, 1931 [ACCEPTED GENUS 9854:7PDRF nidx=null]
 + Pseudobellardia L. R. Cox, 1931 [ACCEPTED GENUS 9857:9WMJY nidx=null]
Pseudoceratodes rex
 - Pseudoceratodes rex Cox, 1933 [SYNONYM SPECIES 9854:78DVB nidx=null parent=7B2ZT]
 + Pseudoceratodes rex L. R. Cox, 1933 [SYNONYM SPECIES 9857:9WQG7 nidx=null parent=9WQSJ]
Pseudomesochra aberrans
 - Pseudomesochra aberrans Bodin, 1969 [ACCEPTED SPECIES 9854:78G5P nidx=null]
 + Pseudomesochra aberrans Bodin, 1968 [ACCEPTED SPECIES 9857:9WQGH nidx=null]
Pseudomesochra similis
 - Pseudomesochra similis Lang, 1935 [ACCEPTED SPECIES 9854:4P362 nidx=null]
 + Pseudomesochra similis Lang, 1936 [ACCEPTED SPECIES 9857:9WQGJ nidx=null]
Pseudorhytidopilus
 - Pseudorhytidopilus Cox, 1960 [ACCEPTED GENUS 9854:7PDYF nidx=null]
 + Pseudorhytidopilus L. R. Cox, 1960 [ACCEPTED GENUS 9857:9WMK2 nidx=null]
Pseudoringicula
 - Pseudoringicula Lin, 1980 [ACCEPTED GENUS 9854:7PDYK nidx=null]
 + Pseudoringicula G.-Y. Lin, 1980 [ACCEPTED GENUS 9857:9WM7D nidx=null]
Pseudoringicula sinensis
 - Pseudoringicula sinensis Lin, 1980 [ACCEPTED SPECIES 9854:4P9XJ nidx=null]
 + Pseudoringicula sinensis G.-Y. Lin, 1980 [ACCEPTED SPECIES 9857:9WQH2 nidx=null]
Pseudothersitea
 - Pseudothersitea Savornin, 1915 [ACCEPTED GENUS 9854:7PDZZ nidx=null]
 + Pseudothersitea Savornin, 1914 [ACCEPTED GENUS 9857:9WSK8 nidx=null]
Pteria coturnix
 - Pteria coturnix (Dunker, 1872) [SYNONYM SPECIES 9854:4PTQR nidx=null parent=4PTRH]
 + Pteria coturnix (Dunker, 1879) [SYNONYM SPECIES 9857:9WQH9 nidx=null parent=4PTRH]
Pteria macroptera
 - Pteria macroptera [SYNONYM SPECIES 9854:4PTRD nidx=null parent=4PTRM]
 + Pteria macroptera (Lamarck, 1819) [SYNONYM SPECIES 9857:9WQHB nidx=null parent=4PTRM]
Pteria spadicea
 - Pteria spadicea [SYNONYM SPECIES 9854:4PTRX nidx=null parent=6F2YP]
 + Pteria spadicea (Dunker, 1852) [SYNONYM SPECIES 9857:9WQHD nidx=null parent=6F2YP]
Ptycholaimellus macrodentatus
 - Ptycholaimellus macrodentatus (Timm, 1961) [ACCEPTED SPECIES 9854:8GHS2 nidx=null]
 + Ptycholaimellus macrodentatus (Timm, 1961) Wieser & Hopper, 1967 [ACCEPTED SPECIES 9857:9WQHK nidx=null]
Punrunata femoralis
 - Punrunata femoralis Bauab-Vianna & Soares, 1972 [ACCEPTED SPECIES 9854:7YNWR nidx=null]
 + Punrunata femoralis Soares & Bauab-Vianna, 1973 [ACCEPTED SPECIES 9857:9WP54 nidx=null]
Pupa kingi
 - Pupa kingi Cox, 1864 [SYNONYM SPECIES 9854:4QJG5 nidx=null parent=334HR]
 + Pupa kingi J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WQHN nidx=null parent=9WNH6]
Pupa lincolnensis
 - Pupa lincolnensis Cox, 1867 [SYNONYM SPECIES 9854:4QJGH nidx=null parent=74JXG]
 + Pupa lincolnensis J. C. Cox, 1867 [SYNONYM SPECIES 9857:9WQHP nidx=null parent=74JXG]
Pupa margaretae
 - Pupa margaretae Cox, 1868 [SYNONYM SPECIES 9854:4QJGQ nidx=null parent=3FDDF]
 + Pupa margaretae J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WQHQ nidx=null parent=9WNV8]
Pupa mastersi
 - Pupa mastersi Cox, 1864 [SYNONYM SPECIES 9854:4QJGR nidx=null parent=334HR]
 + Pupa mastersi J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WQHR nidx=null parent=9WNH6]
Pupa moretonensis
 - Pupa moretonensis Cox, 1868 [SYNONYM SPECIES 9854:6WPHP nidx=null parent=3FDDV]
 + Pupa moretonensis J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WQHS nidx=null parent=3FDDV]
Pupa nelsoni
 - Pupa nelsoni Cox, 1864 [SYNONYM SPECIES 9854:4QJHD nidx=null parent=74JXG]
 + Pupa nelsoni J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WQHT nidx=null parent=74JXG]
Pupa ramsayi
 - Pupa ramsayi Cox, 1864 [SYNONYM SPECIES 9854:4QJJT nidx=null parent=6WP9Y]
 + Pupa ramsayi J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WQHV nidx=null parent=6WP9Y]
Pupina (Tylotoechus) pineticola
 - Pupina (Tylotoechus) pineticola Cox, 1866 [SYNONYM SPECIES 9854:7SWWH nidx=null parent=4XB6M]
 + Pupina (Tylotoechus) pineticola J. C. Cox, 1866 [SYNONYM SPECIES 9857:9WQHX nidx=null parent=9WQPZ]
Pupina (Tylotoechus) robusta
 - Pupina (Tylotoechus) robusta Cox, 1868 [SYNONYM SPECIES 9854:7SWWL nidx=null parent=4XB6N]
 + Pupina (Tylotoechus) robusta J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WQJ2 nidx=null parent=9WQQ2]
Pupina (Tylotoechus) wilcoxi
 - Pupina (Tylotoechus) wilcoxi Cox, 1864 [SYNONYM SPECIES 9854:7SWX6 nidx=null parent=6YPJL]
 + Pupina (Tylotoechus) wilcoxi J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WQJ4 nidx=null parent=9WQQ3]
Pupina grandis var. minor
 - Pupina grandis var. minor Cox, 1873 [SYNONYM VARIETY 9854:7V95S nidx=null parent=7T3RR]
 + Pupina grandis var. minor J. C. Cox, 1873 [SYNONYM VARIETY 9857:9WV9M nidx=null parent=7T3RR]
Pupina pineticola
 - Pupina pineticola Cox, 1866 [SYNONYM SPECIES 9854:4QJRP nidx=null parent=4XB6M]
 + Pupina pineticola J. C. Cox, 1866 [SYNONYM SPECIES 9857:9WQHY nidx=null parent=9WQPZ]
Pupina robusta
 - Pupina robusta Cox, 1868 [AMBIGUOUS_SYNONYM SPECIES 9854:4QJRQ nidx=null parent=4XB6N]
 + Pupina robusta J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WQHZ nidx=null parent=9WQQ2]
Pupina wilcoxi
 - Pupina wilcoxi Cox, 1864 [SYNONYM SPECIES 9854:4QJS6 nidx=null parent=6YPJL]
 + Pupina wilcoxi J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WQJ3 nidx=null parent=9WQQ3]
Pupinella macgillivrayi
 - Pupinella macgillivrayi Cox, 1864 [SYNONYM SPECIES 9854:6WP9P nidx=null parent=4XB6K]
 + Pupinella macgillivrayi J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WQJ5 nidx=null parent=4XB6K]
Pupinella whartoni
 - Pupinella whartoni Cox, 1864 [SYNONYM SPECIES 9854:7SX5G nidx=null parent=7S9Y3]
 + Pupinella whartoni J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WQJ6 nidx=null parent=7S9Y3]
Purana tavoyana
 - Purana tavoyana Ollenbach, 1929 [AMBIGUOUS_SYNONYM SPECIES 9854:4QJYM nidx=null parent=7HDM7]
 + Purana tavoyana Ollenbach, 1928 [AMBIGUOUS_SYNONYM SPECIES 9857:9WTYF nidx=null parent=9WV7J]
Pyrgula curta
 - Pyrgula curta (Naliwkin, 1914) [ACCEPTED SPECIES 9854:4QTK4 nidx=null]
 + Pyrgula curta (Nalivkin, 1915) [SYNONYM SPECIES 9857:9WQJF nidx=null parent=7RSQ2]
Pyza bosnica
 - Pyza bosnica (Roewer, 1916) [ACCEPTED SPECIES 9854:7YPGD nidx=null]
 + Pyza bosnica (Roewer, 1919) [ACCEPTED SPECIES 9857:9WP55 nidx=null]
Quadrijugatoridae
 - Quadrijugatoridae [ACCEPTED FAMILY 9854:858BP nidx=null]
 + Quadrijugatoridae Kesling & Hussey, 1953 [ACCEPTED FAMILY 9857:9WLP5 nidx=null]
Quenstedtiidae
 - Quenstedtiidae Cox, 1929 [ACCEPTED FAMILY 9854:7NWYY nidx=null]
 + Quenstedtiidae L. R. Cox, 1929 [ACCEPTED FAMILY 9857:9WLP6 nidx=null]
Quintalia flosculus
 - Quintalia flosculus (Cox, 1866) [ACCEPTED SPECIES 9854:6WRRK nidx=null]
 + Quintalia flosculus (J. C. Cox, 1866) [ACCEPTED SPECIES 9857:9WQJK nidx=null]
Rachis bidwilli
 - Rachis bidwilli (Cox, 1868) [SYNONYM SPECIES 9854:8KS4Z nidx=null parent=795SG]
 + Rachis bidwilli (J. C. Cox, 1868) [SYNONYM SPECIES 9857:9WTYM nidx=null parent=795SG]
Ramazzottius affinis
 - Ramazzottius affinis Bertolani, Guidetti & Rebecchi, 1993 [ACCEPTED SPECIES 9854:4RBZM nidx=null]
 + Ramazzottius affinis Bertolani, Guidetti & Rebecchi, 1994 [ACCEPTED SPECIES 9857:9WQJS nidx=null]
Ranina bittneri
 - Ranina bittneri Lörenthey, 1901 [SYNONYM SPECIES 9854:9J8JC nidx=null parent=9HL9N]
 + Ranina bittneri Lőrenthey, 1902 [SYNONYM SPECIES 9857:9WZ43 nidx=null parent=9WTTS]
Recluzia hargravesi
 - Recluzia hargravesi Cox, 1870 [SYNONYM SPECIES 9854:6WSW5 nidx=null parent=6X4W5]
 + Recluzia hargravesi J. C. Cox, 1870 [SYNONYM SPECIES 9857:9WQJZ nidx=null parent=6X4W5]
Retha
 - Retha Cox, 1965 [ACCEPTED GENUS 9854:7PFND nidx=null]
 + Retha L. R. Cox, 1965 [ACCEPTED GENUS 9857:9WM8F nidx=null]
Reticharopa helva
 - Reticharopa helva (Cox, 1870) [ACCEPTED SPECIES 9854:78SB8 nidx=null]
 + Reticharopa helva (J. C. Cox, 1870) [ACCEPTED SPECIES 9857:9WQK4 nidx=null]
Retusa ovulina
 - Retusa ovulina Lin, 1991 [ACCEPTED SPECIES 9854:6WRVT nidx=null]
 + Retusa ovulina G.-Y. Lin, 1991 [ACCEPTED SPECIES 9857:9WQK5 nidx=null]
Rhaetavicula
 - Rhaetavicula Cox, 1962 [ACCEPTED GENUS 9854:8SF7J nidx=null]
 + Rhaetavicula L. R. Cox, 1962 [ACCEPTED GENUS 9857:9WSKF nidx=null]
Rhagada (Tumegada) convicta
 - Rhagada (Tumegada) convicta (Cox, 1870) [SYNONYM SPECIES 9854:7SZVV nidx=null parent=4RYBQ]
 + Rhagada (Tumegada) convicta (J. C. Cox, 1870) [SYNONYM SPECIES 9857:9WQK8 nidx=null parent=9WQK7]
Rhagada convicta
 - Rhagada convicta (Cox, 1870) [ACCEPTED SPECIES 9854:4RYBQ nidx=null]
 + Rhagada convicta (J. C. Cox, 1870) [ACCEPTED SPECIES 9857:9WQK7 nidx=null]
Rhagada oscarensis
 - Rhagada oscarensis (Cox, 1892) [SYNONYM SPECIES 9854:78TS9 nidx=null parent=7FW2B]
 + Rhagada oscarensis (J. C. Cox, 1892) [SYNONYM SPECIES 9857:9WQK9 nidx=null parent=9WR5P]
Rhinoclavis reinhardi
 - Rhinoclavis reinhardi (Cox, 1948) [ACCEPTED SPECIES 9854:795NN nidx=null]
 + Rhinoclavis reinhardi (L. R. Cox, 1948) [ACCEPTED SPECIES 9857:9WQKC nidx=null]
Rhodine bitorquata
 - Rhodine bitorquata [ACCEPTED SPECIES 9854:6X6N2 nidx=null]
 + Rhodine bitorquata Moore, 1923 [ACCEPTED SPECIES 9857:9WNHY nidx=null]
Rhopiella hirsuta kerguelenensis
 - Rhopiella hirsuta kerguelenensis (Koehler, 1920) [SYNONYM SUBSPECIES 9854:7L34R nidx=null parent=4SMGN]
 + Rhopiella hirsuta kerguelenensis A.M. Clark, 1962 [SYNONYM SUBSPECIES 9857:9WRF3 nidx=null parent=4SMGN]
Rhynchotrochus (Rhynchotrochus) gurgustii
 - Rhynchotrochus (Rhynchotrochus) gurgustii Cox, 1879 [SYNONYM SPECIES 9854:4STYF nidx=null parent=4STYW]
 + Rhynchotrochus (Rhynchotrochus) gurgustii J. C. Cox, 1879 [SYNONYM SPECIES 9857:9WQKJ nidx=null parent=9WQKH]
Rhynchotrochus gurgustii
 - Rhynchotrochus gurgustii (Cox, 1879) [ACCEPTED SPECIES 9854:4STYW nidx=null]
 + Rhynchotrochus gurgustii (J. C. Cox, 1879) [ACCEPTED SPECIES 9857:9WQKH nidx=null]
Rhytida (Echotrida) strangeoides
 - Rhytida (Echotrida) strangeoides (Cox, 1864) [SYNONYM SPECIES 9854:8TJD9 nidx=null parent=38MNR]
 + Rhytida (Echotrida) strangeoides (J. C. Cox, 1864) [SYNONYM SPECIES 9857:9WTZ5 nidx=null parent=9WNP2]
Rhytida (Strangesta) leichardti
 - Rhytida (Strangesta) leichardti (Cox, 1864) [SYNONYM SPECIES 9854:8TGRD nidx=null parent=52W6S]
 + Rhytida (Strangesta) leichardti (J. C. Cox, 1864) [SYNONYM SPECIES 9857:9WTZ6 nidx=null parent=52W6S]
Rhytida (Tasmaphena) hamiltoni
 - Rhytida (Tasmaphena) hamiltoni (Cox, 1868) [SYNONYM SPECIES 9854:8THR3 nidx=null parent=6ZK2C]
 + Rhytida (Tasmaphena) hamiltoni (J. C. Cox, 1868) [SYNONYM SPECIES 9857:9WTZ7 nidx=null parent=9WQRM]
Richinidae
 - Richinidae [ACCEPTED FAMILY 9854:858C5 nidx=null]
 + Richinidae Scott, 1961 [ACCEPTED FAMILY 9857:9WLP8 nidx=null]
Rictocyma esquimalti
 - Rictocyma esquimalti [SYNONYM SPECIES 9854:4T2LZ nidx=null parent=HN48]
 + Rictocyma esquimalti (Baird, 1863) [SYNONYM SPECIES 9857:9WQKK nidx=null parent=HN48]
Rinetrigonia australiensis
 - Rinetrigonia australiensis (Cox, 1961) [ACCEPTED SPECIES 9854:4T3SK nidx=null]
 + Rinetrigonia australiensis (L. R. Cox, 1961) [ACCEPTED SPECIES 9857:9WQKL nidx=null]
Rissoella conica
 - Rissoella conica (de Folin & Périer, 1870) [ACCEPTED SPECIES 9854:4T5YY nidx=null]
 + Rissoella conica (L. Périer, 1867) [ACCEPTED SPECIES 9857:9WQKN nidx=null]
Rissoina azaniensis
 - Rissoina azaniensis Cox, 1927 [SYNONYM SPECIES 9854:4T66R nidx=null parent=7GCNM]
 + Rissoina azaniensis L. R. Cox, 1927 [SYNONYM SPECIES 9857:9WQKP nidx=null parent=9WR68]
Romanosoma cavernicola
 - Romanosoma cavernicola Ceuca, 1967 [SYNONYM SPECIES 9854:7YTP7 nidx=null parent=849GH]
 + Romanosoma cavernicola Ceuca, 1967 [ACCEPTED SPECIES 9857:798ML nidx=null]
Romanosoma odici
 - Romanosoma odici Ceuca, 1979 [SYNONYM SPECIES 9854:7YTP8 nidx=null parent=849GK]
 + Romanosoma odici Ceuca, 1979 [ACCEPTED SPECIES 9857:6WWMK nidx=null]
Romanosoma oltenica
 - Romanosoma oltenica Ceuca, 1967 [SYNONYM SPECIES 9854:7YTP9 nidx=null parent=849GL]
 + Romanosoma oltenica Ceuca, 1967 [ACCEPTED SPECIES 9857:6X8MK nidx=null]
Rostroconchia
 - Rostroconchia Cox, 1960 [ACCEPTED CLASS 9854:7NVXD nidx=null]
 + Rostroconchia L. R. Cox, 1960 [ACCEPTED CLASS 9857:9WLLG nidx=null]
Rostroperna
 - Rostroperna Cox, 1964 [ACCEPTED GENUS 9854:7PFYJ nidx=null]
 + Rostroperna L. R. Cox, 1964 [ACCEPTED GENUS 9857:9WMKH nidx=null]
Saccoia escoffierae var. oryza
 - Saccoia escoffierae var. oryza Sacco, 1895 [SYNONYM VARIETY 9854:7MMHG nidx=null parent=4TX4F]
 + Saccoia escoffierae var. oryza Brusina, 1893 [SYNONYM VARIETY 9857:9WRJP nidx=null parent=9WQL2]
Saccoia oryza
 - Saccoia oryza Sacco, 1895 [ACCEPTED SPECIES 9854:4TX4F nidx=null]
 + Saccoia oryza Brusina, 1893 [ACCEPTED SPECIES 9857:9WQL2 nidx=null]
Sainshandia syrdarjensis
 - Sainshandia syrdarjensis Martinson, 1990 [SYNONYM SPECIES 9854:9GZ5Z nidx=null parent=9H4TN]
 + Sainshandia syrdarjensis [sic] [SYNONYM SPECIES 9857:9WWQH nidx=null parent=9WZ3P]
Salmincola corpulentus
 - Salmincola corpulentus (Kellicott, 1880) [ACCEPTED SPECIES 9854:6XD8M nidx=null]
 + Salmincola corpulentus (Kellicott, 1882) [ACCEPTED SPECIES 9857:9WQL6 nidx=null]
Scalaria kowiensis
 - Scalaria kowiensis W. H. Turton, 1932 [SYNONYM SPECIES 9854:7T42Q nidx=null parent=7SJKJ]
 + Scalaria kowiensis W. H. Turton, 1933 [SYNONYM SPECIES 9857:9WQLN nidx=null parent=7SJKJ]
Scalaria planicosta
 - Scalaria planicosta Ant. Bivona, 1832 [SYNONYM SPECIES 9854:936B9 nidx=null parent=6G949]
 + Scalaria planicosta Bivona e Bernardi, 1832 [SYNONYM SPECIES 9857:9WQLP nidx=null parent=6G949]
Schaefericonchidae
 - Schaefericonchidae Schallreuter, 1987 [ACCEPTED SUPERORDER 9854:86BHZ nidx=null]
 + Schaefericonchidae Schallreuter, 1987 [ACCEPTED FAMILY 9857:9WS9F nidx=null]
Schenkelibunus impar
 - Schenkelibunus impar (Mello-Leitão, 1931) [ACCEPTED SPECIES 9854:7YYC6 nidx=null]
 + Schenkelibunus impar (Mello-Leitão, 1932) [ACCEPTED SPECIES 9857:9WP5J nidx=null]
Schizogoniidae
 - Schizogoniidae Cox, 1960 [ACCEPTED FAMILY 9854:7NKY7 nidx=null]
 + Schizogoniidae L. R. Cox, 1960 [ACCEPTED FAMILY 9857:9WLP9 nidx=null]
Semele nuculoidea
 - Semele nuculoidea [SYNONYM SPECIES 9854:4WFVB nidx=null parent=4WFWW]
 + Semele nuculoidea (Conrad, 1841) [SYNONYM SPECIES 9857:9WQMG nidx=null parent=4WFWW]
Serpula vermicularis narconensis
 - Serpula vermicularis narconensis Baird, 1865 [SYNONYM SUBSPECIES 9854:7KS2J nidx=null parent=4WWLL]
 + Serpula vermicularis narconensis Baird, 1864 [SYNONYM SUBSPECIES 9857:9WNJH nidx=null parent=4WWLL]
Sigmoria abbotti
 - Sigmoria abbotti (Hoffman, 1967) [ACCEPTED SPECIES 9854:8RF3Y nidx=null]
 + Sigmoria abbotti (Hoffman, 1967) [SYNONYM SPECIES 9857:4XB3M nidx=null parent=W3D6]
Sigmoria bipraesidens
 - Sigmoria bipraesidens (Hoffman, 1967) [ACCEPTED SPECIES 9854:8RF46 nidx=null]
 + Sigmoria bipraesidens (Hoffman, 1967) [SYNONYM SPECIES 9857:4XB3Z nidx=null parent=W3D7]
Signepupina pineticola
 - Signepupina pineticola (Cox, 1866) [ACCEPTED SPECIES 9854:4XB6M nidx=null]
 + Signepupina pineticola (J. C. Cox, 1866) [ACCEPTED SPECIES 9857:9WQPZ nidx=null]
Signepupina robusta
 - Signepupina robusta (Cox, 1868) [ACCEPTED SPECIES 9854:4XB6N nidx=null]
 + Signepupina robusta (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WQQ2 nidx=null]
Signepupina wilcoxi
 - Signepupina wilcoxi (Cox, 1864) [ACCEPTED SPECIES 9854:6YPJL nidx=null]
 + Signepupina wilcoxi (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WQQ3 nidx=null]
Silax consors
 - Silax consors (Koehler, 1908) [ACCEPTED SPECIES 9854:874ML nidx=null]
 + Silax consors (Koehler, 1907) [ACCEPTED SPECIES 9857:9WKQB nidx=null]
Sinployea allecta
 - Sinployea allecta (Cox, 1870) [ACCEPTED SPECIES 9854:4XM5M nidx=null]
 + Sinployea allecta (J. C. Cox, 1870) [ACCEPTED SPECIES 9857:9WQQ9 nidx=null]
Sinployea allecta allecta
 - Sinployea allecta allecta (Cox, 1870) [ACCEPTED SUBSPECIES 9854:8SYGR nidx=null]
 + Sinployea allecta allecta (J. C. Cox, 1870) [ACCEPTED SUBSPECIES 9857:9WRFC nidx=null]
Sinumelon bitaeniatum
 - Sinumelon bitaeniatum (Cox, 1868) [ACCEPTED SPECIES 9854:4XMKN nidx=null]
 + Sinumelon bitaeniatum (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WQQB nidx=null]
Siphoniulida
 - Siphoniulida Cook, 1895 [ACCEPTED ORDER 9854:7NFFT nidx=null]
 + Siphoniulida Pocock, 1894 [ACCEPTED ORDER 9857:43L nidx=null]
Sitala wilcoxi
 - Sitala wilcoxi (Cox, 1865) [SYNONYM SPECIES 9854:7T63B nidx=null parent=5ZTFB]
 + Sitala wilcoxi (J. C. Cox, 1865) [SYNONYM SPECIES 9857:9WTZX nidx=null parent=5ZTFB]
Skrjabinema (Skrjabinema) ovis
 - Skrjabinema (Skrjabinema) ovis Skrjabin, 1915 [ACCEPTED SPECIES 9854:99TV2 nidx=null]
 + Skrjabinema (Skrjabinema) ovis (Skrjabin, 1915) Verestchagin, 1926 [ACCEPTED SPECIES 9857:9WRQD nidx=null]
Sodreana curupira
 - Sodreana curupira Bragagnolo & Pinto-da-Rocha, 2010 [ACCEPTED SPECIES 9854:7Z4B9 nidx=null]
 + Sodreana curupira Bragagnolo & Pinto-da-Rocha, 2011 [SYNONYM SPECIES 9857:9WP5R nidx=null parent=9X3PZ]
Solecurtus dombeyi
 - Solecurtus dombeyi [SYNONYM SPECIES 9854:6YSRG nidx=null parent=54JP9]
 + Solecurtus dombeyi [sic] [SYNONYM SPECIES 9857:9WQQL nidx=null parent=54JP9]
Solen (Ensisolen) tehuelchus
 - Solen (Ensisolen) tehuelchus [SYNONYM SPECIES 9854:9H4P8 nidx=null parent=4Y5PX]
 + Solen (Ensisolen) tehuelchus [sic] [SYNONYM SPECIES 9857:9WV22 nidx=null parent=4Y5PX]
Solen (Solen) solenae
 - Solen (Solen) solenae [SYNONYM SPECIES 9854:9H4S8 nidx=null parent=4Y5PH]
 + Solen (Solen) solenae [sic] [SYNONYM SPECIES 9857:9WZ3N nidx=null parent=4Y5PH]
Soletellina olivacea
 - Soletellina olivacea [SYNONYM SPECIES 9854:8V9HF nidx=null parent=484LP]
 + Soletellina olivacea (Jay, 1857) [SYNONYM SPECIES 9857:9WQQM nidx=null parent=484LP]
Sowerbyidae
 - Sowerbyidae Cox, 1929 [ACCEPTED FAMILY 9854:7NX32 nidx=null]
 + Sowerbyidae L. R. Cox, 1929 [ACCEPTED FAMILY 9857:9WLPB nidx=null]
Speocyclops castereti
 - Speocyclops castereti Lindberg, 1954 [ACCEPTED SPECIES 9854:4YHXD nidx=null]
 + Speocyclops castereti Lindberg, 1953 [ACCEPTED SPECIES 9857:9WQQR nidx=null]
Sphaerium albicum
 - Sphaerium albicum Martinson, 1982 [SYNONYM SPECIES 9854:878B9 nidx=null parent=877M2]
 + Sphaerium albicum (Martinson, 1976) [SYNONYM SPECIES 9857:9WV24 nidx=null parent=877M2]
Sphaeronella uyenoi
 - Sphaeronella uyenoi Kakui & Munakata, 2022 [ACCEPTED SPECIES 9854:9WJ7Q nidx=null]
 + Sphaeronella uyenoi Kakui & Munakata, 2023 [ACCEPTED SPECIES 9857:9WZ62 nidx=null]
Sphaerospira arthuriana
 - Sphaerospira arthuriana (Cox, 1873) [ACCEPTED SPECIES 9854:4YS3V nidx=null]
 + Sphaerospira arthuriana (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WQQS nidx=null]
Sphaerospira blomfieldi
 - Sphaerospira blomfieldi (Cox, 1864) [ACCEPTED SPECIES 9854:4YS3X nidx=null]
 + Sphaerospira blomfieldi (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WQQT nidx=null]
Sphaerospira oconnellensis
 - Sphaerospira oconnellensis (Cox, 1871) [ACCEPTED SPECIES 9854:4YS44 nidx=null]
 + Sphaerospira oconnellensis (J. C. Cox, 1871) [ACCEPTED SPECIES 9857:9WQQV nidx=null]
Sphaerospira rawnesleyi
 - Sphaerospira rawnesleyi (Cox, 1873) [SYNONYM SPECIES 9854:7T73P nidx=null parent=7T83N]
 + Sphaerospira rawnesleyi (J. C. Cox, 1873) [SYNONYM SPECIES 9857:9WQQW nidx=null parent=9WT8C]
Sphaerospira rockhamptonensis
 - Sphaerospira rockhamptonensis (Cox, 1873) [ACCEPTED SPECIES 9854:4YS46 nidx=null]
 + Sphaerospira rockhamptonensis (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WQQX nidx=null]
Sphaerotheristus parvus
 - Sphaerotheristus parvus Gagarin & Thanh, 2008 [ACCEPTED SPECIES 9854:8GJQ3 nidx=null]
 + Sphaerotheristus parvus Gagarin & Thanh, 2006 [ACCEPTED SPECIES 9857:9WQQY nidx=null]
Spirobolus hova
 - Spirobolus hova De Saussure & Zehntner, 1902 [SYNONYM SPECIES 9854:4Z7LZ nidx=null parent=FFND]
 + Spirobolus hova De Saussure & Zehntner, 1897 [SYNONYM SPECIES 9857:9WQR6 nidx=null parent=9WMRX]
Spirobolus sakalava
 - Spirobolus sakalava De Saussure & Zehntner, 1902 [SYNONYM SPECIES 9854:7Z4Q2 nidx=null parent=FFNH]
 + Spirobolus sakalava De Saussure & Zehntner, 1897 [SYNONYM SPECIES 9857:9WQR7 nidx=null parent=FFNH]
Spondylus pictorum
 - Spondylus pictorum sensu Reeve, 1856 [AMBIGUOUS_SYNONYM SPECIES 9854:6ZC7K nidx=null parent=6ZCG8]
 + Spondylus pictorum Schreibers, 1793 [AMBIGUOUS_SYNONYM SPECIES 9857:9WQRC nidx=null parent=6ZCG8]
Spondylus varians
 - Spondylus varians [SYNONYM SPECIES 9854:6ZBZ7 nidx=null parent=6ZBZ4]
 + Spondylus varians [sic] [SYNONYM SPECIES 9857:9WQRD nidx=null parent=6ZBZ4]
Spyridoceramus
 - Spyridoceramus Cox, 1969 [ACCEPTED GENUS 9854:7PHD6 nidx=null]
 + Spyridoceramus L. R. Cox, 1969 [ACCEPTED GENUS 9857:9WML8 nidx=null]
Stanisicarion aquila
 - Stanisicarion aquila (Cox, 1868) [ACCEPTED SPECIES 9854:7T7J7 nidx=null]
 + Stanisicarion aquila (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WQRH nidx=null]
Stauraster primaevus
 - Stauraster primaevus (von Zittel, 1880) [ACCEPTED SPECIES 9854:8RW8J nidx=null]
 + Stauraster primaevus (Zittel in Fraas, 1885-86) [ACCEPTED SPECIES 9857:9WV26 nidx=null]
Stenacapha hamiltoni
 - Stenacapha hamiltoni (Cox, 1868) [ACCEPTED SPECIES 9854:6ZK2C nidx=null]
 + Stenacapha hamiltoni (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WQRM nidx=null]
Steorra rawnesleyi
 - Steorra rawnesleyi (Cox, 1873) [ACCEPTED SPECIES 9854:7T83N nidx=null]
 + Steorra rawnesleyi (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WT8C nidx=null]
Stephanoseris lamellosa
 - Stephanoseris lamellosa Verrill, 1865 [SYNONYM SPECIES 9854:85767 nidx=null parent=852SJ]
 + Stephanoseris lamellosa Verrill, 1866 [SYNONYM SPECIES 9857:9WQRS nidx=null parent=852SJ]
Strangesta ramsayi
 - Strangesta ramsayi (Cox, 1868) [ACCEPTED SPECIES 9854:52W6W nidx=null]
 + Strangesta ramsayi (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WQRY nidx=null]
Strategus inermis
 - Strategus inermis J. G. Cooper, 1862 [SYNONYM SPECIES 9854:6ZXTC nidx=null parent=45VMC]
 + Strategus inermis J. G. Cooper, 1863 [SYNONYM SPECIES 9857:9WNVG nidx=null parent=9WPW8]
Striarca lactea quoyi
 - Striarca lactea quoyi [SYNONYM SUBSPECIES 9854:5LBSP nidx=null parent=6ZXDD]
 + Striarca lactea quoyi (Payraudeau, 1826) [SYNONYM SUBSPECIES 9857:9WRFJ nidx=null parent=6ZXDD]
Strongyloides
 - Strongyloides [ACCEPTED GENUS 9854:7PFW nidx=null]
 + Strongyloides Grassi, 1879 [ACCEPTED GENUS 9857:9WMBJ nidx=null]
Succinea eucalypti
 - Succinea eucalypti Cox, 1864 [SYNONYM SPECIES 9854:8KDGG nidx=null parent=53DWN]
 + Succinea eucalypti J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WV2X nidx=null parent=53DWN]
Succinea macgillivrayi
 - Succinea macgillivrayi Cox, 1864 [ACCEPTED SPECIES 9854:8HX54 nidx=null]
 + Succinea macgillivrayi J. C. Cox, 1864 [ACCEPTED SPECIES 9857:9WV2Y nidx=null]
Succinea rhodostoma
 - Succinea rhodostoma Cox, 1864 [SYNONYM SPECIES 9854:8KSHH nidx=null parent=53DWN]
 + Succinea rhodostoma J. C. Cox, 1864 [SYNONYM SPECIES 9857:9WV2Z nidx=null parent=53DWN]
Sudanistes rex
 - Sudanistes rex (Cox, 1933) [ACCEPTED SPECIES 9854:7B2ZT nidx=null]
 + Sudanistes rex (L. R. Cox, 1933) [ACCEPTED SPECIES 9857:9WQSJ nidx=null]
Surcula similis
 - Surcula similis (Ant. Bivona, 1838) [SYNONYM SPECIES 9854:9G9HL nidx=null parent=9G4TL]
 + Surcula similis (Bivona, 1838) [SYNONYM SPECIES 9857:9WV32 nidx=null parent=9WNTG]
Surcula undatiruga
 - Surcula undatiruga (Ant. Bivona, 1838) [SYNONYM SPECIES 9854:9G9HM nidx=null parent=9G4TM]
 + Surcula undatiruga (Bivona e Bernardi, 1838) [SYNONYM SPECIES 9857:9WV33 nidx=null parent=9WNTH]
Sycostoma
 - Sycostoma Cox, 1931 [ACCEPTED GENUS 9854:7PHVD nidx=null]
 + Sycostoma L. R. Cox, 1931 [ACCEPTED GENUS 9857:9WMLK nidx=null]
Talainga japrona
 - Talainga japrona Ollenbach, 1929 [ACCEPTED SPECIES 9854:54KT2 nidx=null]
 + Talainga japrona Ollenbach, 1928 [ACCEPTED SPECIES 9857:9WV35 nidx=null]
Talainga naga
 - Talainga naga Ollenbach, 1929 [ACCEPTED SPECIES 9854:54KT3 nidx=null]
 + Talainga naga Ollenbach, 1928 [ACCEPTED SPECIES 9857:9WV36 nidx=null]
Tanna auripennis
 - Tanna auripennis Kato, 1930 [ACCEPTED SPECIES 9854:54PBC nidx=null]
 + Tanna auripennis Kato, 1931 [ACCEPTED SPECIES 9857:9WV38 nidx=null]
Tapes litteratus
 - Tapes litteratus (Linnaeus, 1758) [SYNONYM SPECIES 9854:54RPZ nidx=null parent=54RPY]
 + Tapes litteratus [sic] [SYNONYM SPECIES 9857:9WQT3 nidx=null parent=54RPY]
Taracus birsteini
 - Taracus birsteini Lyovushkin, 1972 [ACCEPTED SPECIES 9854:7WZD8 nidx=null]
 + Taracus birsteini Lyovushkin, 1971 [ACCEPTED SPECIES 9857:9WP6C nidx=null]
Tasmanoropa tasmaniae
 - Tasmanoropa tasmaniae (Cox, 1868) [ACCEPTED SPECIES 9854:54YR5 nidx=null]
 + Tasmanoropa tasmaniae (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WQTC nidx=null]
Tasmaphena lamproides
 - Tasmaphena lamproides (Cox, 1868) [ACCEPTED SPECIES 9854:54YRQ nidx=null]
 + Tasmaphena lamproides (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WQTD nidx=null]
Tasmathera legrandi
 - Tasmathera legrandi (Cox, 1868) [ACCEPTED SPECIES 9854:54YS3 nidx=null]
 + Tasmathera legrandi (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WQTF nidx=null]
Tatriella
 - Tatriella Hrabĕ, 1936 [ACCEPTED GENUS 9854:84V3S nidx=null]
 + Tatriella Hrabĕ, 1939 [ACCEPTED GENUS 9857:9WMM8 nidx=null]
Taungia
 - Taungia Ollenbach, 1929 [ACCEPTED GENUS 9854:8HRVC nidx=null]
 + Taungia Ollenbach, 1928 [ACCEPTED GENUS 9857:9WSL5 nidx=null]
Taungia abnormis
 - Taungia abnormis Ollenbach, 1929 [ACCEPTED SPECIES 9854:54Z76 nidx=null]
 + Taungia abnormis Ollenbach, 1928 [ACCEPTED SPECIES 9857:9WV39 nidx=null]
Tavukixipha
 - Tavukixipha Otte & Cowper, 2007 [ACCEPTED GENUS 9854:9JNP7 nidx=null]
 + Tavukixipha Otte & Cowper, 2007 [ACCEPTED GENUS 9857:9WMC4 nidx=null]
 + Tavukixipha Otte & Cowper, 2007 [SYNONYM GENUS 9857:9WMC5 nidx=null parent=9WMC4]
Tellina maluccensis
 - Tellina maluccensis Martens, 1865 [SYNONYM SPECIES 9854:557QG nidx=null parent=4NDBW]
 + Tellina maluccensis [sic] [SYNONYM SPECIES 9857:9WQTP nidx=null parent=3WZYW]
Tellinimactra maluccensis
 - Tellinimactra maluccensis (Martens, 1865) [SYNONYM SPECIES 9854:5587M nidx=null parent=4NDBW]
 + Tellinimactra maluccensis [sic] [SYNONYM SPECIES 9857:9WQTR nidx=null parent=3WZYW]
Temnotropidae
 - Temnotropidae Cox, 1960 [ACCEPTED FAMILY 9854:7NX5C nidx=null]
 + Temnotropidae L. R. Cox, 1960 [ACCEPTED FAMILY 9857:9WLPJ nidx=null]
Temporena sardalabiata
 - Temporena sardalabiata (Cox, 1871) [ACCEPTED SPECIES 9854:7BR24 nidx=null]
 + Temporena sardalabiata (J. C. Cox, 1871) [ACCEPTED SPECIES 9857:9WQTT nidx=null]
Temporena whartoni
 - Temporena whartoni (Cox, 1871) [ACCEPTED SPECIES 9854:7C2PS nidx=null]
 + Temporena whartoni (J. C. Cox, 1871) [ACCEPTED SPECIES 9857:9WQTV nidx=null]
Terquemiidae
 - Terquemiidae Cox, 1964 [ACCEPTED FAMILY 9854:9THDT nidx=null]
 + Terquemiidae L. R. Cox, 1964 [ACCEPTED FAMILY 9857:9WVCC nidx=null]
Tettigonia priscomarginata
 - Tettigonia priscomarginata Scudder, 1877 [SYNONYM SPECIES 9854:55W3W nidx=null parent=V6SY]
 + Tettigonia priscomarginata Scudder, 1890 [SYNONYM SPECIES 9857:9WV3P nidx=null parent=9WTCK]
Tettigonia priscotincta
 - Tettigonia priscotincta Scudder, 1877 [SYNONYM SPECIES 9854:55W3X nidx=null parent=V6SZ]
 + Tettigonia priscotincta Scudder, 1890 [SYNONYM SPECIES 9857:9WV3Q nidx=null parent=9WTCL]
Tettigonia priscovariegata
 - Tettigonia priscovariegata Scudder, 1877 [SYNONYM SPECIES 9854:55W3Y nidx=null parent=V6T2]
 + Tettigonia priscovariegata Scudder, 1890 [SYNONYM SPECIES 9857:9WV3R nidx=null parent=9WTCM]
Thamnotettix fuscovenosus [sic]
 - Thamnotettix fuscovenosus [sic] (Horváth, 1895) [SYNONYM SUBSPECIES 9854:8RSWR nidx=null parent=678MC]
 + Thamnotettix fuscovenosus [sic] (Ferrari, 1882) [SYNONYM SUBSPECIES 9857:9WV8M nidx=null parent=678MC]
Thaumasiocyclops
 - Thaumasiocyclops Kiefer, 1933 [ACCEPTED GENUS 9854:7Q49B nidx=null]
 + Thaumasiocyclops Kiefer, 1930 [ACCEPTED GENUS 9857:9WMMJ nidx=null]
Thaumasiocyclops insulanus
 - Thaumasiocyclops insulanus Kiefer, 1933 [ACCEPTED SPECIES 9854:564WF nidx=null]
 + Thaumasiocyclops insulanus Kiefer, 1930 [ACCEPTED SPECIES 9857:9WQW6 nidx=null]
Thaumatocypridoidea
 - Thaumatocypridoidea Müller, 1906 [ACCEPTED SUPERFAMILY 9854:84JTL nidx=null]
 + Thaumatocypridoidea Mueller, 1906 [ACCEPTED SUPERFAMILY 9857:5R2 nidx=null]
Theristus pakistanesis
 - Theristus pakistanesis Turpeenniemi, Nasira & Maqbool, 2001 [ACCEPTED SPECIES 9854:8GKQN nidx=null]
 + Theristus pakistanesis (Turpeenniemi, Nasira & Maqbool, 2001) Fonseca & Bezerra, 2013 [ACCEPTED SPECIES 9857:9WQW8 nidx=null]
Thersiteidae
 - Thersiteidae Savornin, 1915 [ACCEPTED FAMILY 9854:7NX5Z nidx=null]
 + Thersiteidae Savornin, 1914 [ACCEPTED FAMILY 9857:9WLPK nidx=null]
Thersites mitchellae
 - Thersites mitchellae (Cox, 1864) [ACCEPTED SPECIES 9854:7BWJN nidx=null]
 + Thersites mitchellae (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WQWB nidx=null]
Thersites pachystyla var. subfuscozonata
 - Thersites pachystyla var. subfuscozonata Cox, 1894 [SYNONYM VARIETY 9854:7V9LQ nidx=null parent=5C6DG]
 + Thersites pachystyla var. subfuscozonata J. C. Cox, 1894 [SYNONYM VARIETY 9857:9WSNB nidx=null parent=5C6DG]
Thracia praetenuis
 - Thracia praetenuis [SYNONYM SPECIES 9854:56LCJ nidx=null parent=WNGP]
 + Thracia praetenuis [sic] [SYNONYM SPECIES 9857:9WQWZ nidx=null parent=WNGP]
Thryasona diemenensis
 - Thryasona diemenensis (Cox, 1868) [ACCEPTED SPECIES 9854:56N64 nidx=null]
 + Thryasona diemenensis (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WQX3 nidx=null]
Tiara brevissima
 - Tiara brevissima Cox, 1926 [SYNONYM SPECIES 9854:7BYP7 nidx=null parent=4M35M]
 + Tiara brevissima L. R. Cox, 1926 [SYNONYM SPECIES 9857:9WQX8 nidx=null parent=9WQDK]
Tibicen texanus
 - Tibicen texanus (Davis, 1916) [AMBIGUOUS_SYNONYM SPECIES 9854:9G8DR nidx=null parent=35JS3]
 + Tibicen texanus Metcalf, 1963 [AMBIGUOUS_SYNONYM SPECIES 9857:9WT95 nidx=null parent=3J6QL]
 + Tibicen texanus (Davis, 1916) [AMBIGUOUS_SYNONYM SPECIES 9857:9WT96 nidx=null parent=35JS3]
Titaniloricus
 - Titaniloricus [ACCEPTED GENUS 9854:7X9N nidx=null]
 + Titaniloricus Gad, 2005 [ACCEPTED GENUS 9857:9WKN9 nidx=null]
Tornatellinops jacksonensis
 - Tornatellinops jacksonensis (Cox, 1864) [ACCEPTED SPECIES 9854:57FWK nidx=null]
 + Tornatellinops jacksonensis (J. C. Cox, 1864) [ACCEPTED SPECIES 9857:9WQXR nidx=null]
Trapezium rostrata
 - Trapezium rostrata [SYNONYM SPECIES 9854:57Y5Q nidx=null parent=57Y5F]
 + Trapezium rostrata [sic] [SYNONYM SPECIES 9857:9WQXY nidx=null parent=57Y5F]
Tremasterinae
 - Tremasterinae Fisher, 1903 [ACCEPTED SUBFAMILY 9854:8N7YY nidx=null]
 + Tremasterinae Sladen, 1889 [ACCEPTED SUBFAMILY 9857:9WSB3 nidx=null]
Trigonia evansana var. oregona
 - Trigonia evansana var. oregona R. B. Stewart, 1930 [SYNONYM VARIETY 9854:5RWJD nidx=null parent=47YMM]
 + Trigonia evansana var. oregona [sic] [SYNONYM VARIETY 9857:9WRM7 nidx=null parent=47YMM]
Trigonia pavlovi
 - Trigonia pavlovi Stremooukhov, 1896 [SYNONYM SPECIES 9854:58RKD nidx=null parent=4923Q]
 + Trigonia pavlovi Strémooukhov, 1897 [SYNONYM SPECIES 9857:9WQY6 nidx=null parent=9WQ23]
Trigonia tealei
 - Trigonia tealei Cox, 1937 [SYNONYM SPECIES 9854:58RMW nidx=null parent=6B9QS]
 + Trigonia tealei L. R. Cox, 1937 [SYNONYM SPECIES 9857:9WQY7 nidx=null parent=9WNDS]
Trigonia wiedmanni
 - Trigonia wiedmanni H. A. Leanza & Garate, 1983 [ACCEPTED SPECIES 9854:58RNV nidx=null]
 + Trigonia wiedmanni H. A. Leanza & Garate Zubillaga, 1987 [ACCEPTED SPECIES 9857:9WQYB nidx=null]
Triton pachycheylos
 - Triton pachycheylos Tapparone Canefri, 1876 [SYNONYM SPECIES 9854:7TFBZ nidx=null parent=7SZFJ]
 + Triton pachycheylos (Tapparone Canefri, 1877) [SYNONYM SPECIES 9857:9WQYQ nidx=null parent=7SZFJ]
Tritonium mauritianum
 - Tritonium mauritianum Tapparone Canefri, 1876 [SYNONYM SPECIES 9854:5958Y nidx=null parent=448YS]
 + Tritonium mauritianum Tapparone Canefri, 1877 [SYNONYM SPECIES 9857:9WQYS nidx=null parent=448YS]
Trochomorpha belmorei
 - Trochomorpha belmorei (Cox, 1872) [ACCEPTED SPECIES 9854:597G3 nidx=null]
 + Trochomorpha belmorei (J. C. Cox, 1872) [ACCEPTED SPECIES 9857:9WQYT nidx=null]
Trochomorpha crustulum
 - Trochomorpha crustulum (Cox, 1873) [ACCEPTED SPECIES 9854:597G7 nidx=null]
 + Trochomorpha crustulum (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WQYV nidx=null]
Trochomorpha fatigata
 - Trochomorpha fatigata (Cox, 1873) [ACCEPTED SPECIES 9854:597G9 nidx=null]
 + Trochomorpha fatigata (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WQYW nidx=null]
Trochomorpha serena
 - Trochomorpha serena (Cox, 1873) [ACCEPTED SPECIES 9854:597HB nidx=null]
 + Trochomorpha serena (J. C. Cox, 1873) [ACCEPTED SPECIES 9857:9WQYY nidx=null]
Trochotomidae
 - Trochotomidae Cox, 1960 [ACCEPTED FAMILY 9854:7NX8G nidx=null]
 + Trochotomidae L. R. Cox, 1960 [ACCEPTED FAMILY 9857:9WLPM nidx=null]
Trochus caerulescens
 - Trochus caerulescens Lamarck, 1822 [SYNONYM SPECIES 9854:7TG34 nidx=null parent=553QT]
 + Trochus caerulescens Lamarck, 1816 [SYNONYM SPECIES 9857:9WQZ6 nidx=null parent=553QT]
Truncatella brazieri
 - Truncatella brazieri Cox, 1868 [ACCEPTED SPECIES 9854:59DZD nidx=null]
 + Truncatella brazieri J. C. Cox, 1868 [ACCEPTED SPECIES 9857:9WQZC nidx=null]
Truncatella ferruginea
 - Truncatella ferruginea Cox, 1868 [SYNONYM SPECIES 9854:59DZV nidx=null parent=59DZZ]
 + Truncatella ferruginea J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WQZD nidx=null parent=59DZZ]
Truncatella scalarina
 - Truncatella scalarina Cox, 1867 [ACCEPTED SPECIES 9854:7D8T2 nidx=null]
 + Truncatella scalarina J. C. Cox, 1867 [ACCEPTED SPECIES 9857:9WQZF nidx=null]
Truncatella yorkensis
 - Truncatella yorkensis Cox, 1868 [SYNONYM SPECIES 9854:7CWTH nidx=null parent=59DZZ]
 + Truncatella yorkensis J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WQZG nidx=null parent=59DZZ]
Turbonilla incisa var. contricta
 - Turbonilla incisa var. contricta K. J. Bush, 18999 [SYNONYM VARIETY 9854:9KQTN nidx=null parent=3MQZ8]
 + Turbonilla incisa var. contricta K. J. Bush, 1899 [SYNONYM VARIETY 9857:9WRMB nidx=null parent=3MQZ8]
Turbonilla swiftii
 - Turbonilla swiftii K. J. Bush, 18999 [SYNONYM SPECIES 9854:9KJ9S nidx=null parent=9KJ8Q]
 + Turbonilla swiftii K. J. Bush, 1899 [SYNONYM SPECIES 9857:9WQZW nidx=null parent=9KJ8Q]
Turricula wanneri
 - Turricula wanneri (Tesch, 1915) [ACCEPTED SPECIES 9854:7CYXB nidx=null]
 + Turricula wanneri (K. Martin, 1914) [ACCEPTED SPECIES 9857:9WQZY nidx=null]
Turris cincta
 - Turris cincta [SYNONYM SPECIES 9854:59QMN nidx=null parent=59QJK]
 + Turris cincta (Lamarck, 1822) [SYNONYM SPECIES 9857:9WQZZ nidx=null parent=59QJK]
Tutcheria
 - Tutcheria Cox, 1946 [ACCEPTED GENUS 9854:7PKDF nidx=null]
 + Tutcheria L. R. Cox, 1946 [ACCEPTED GENUS 9857:9WMMW nidx=null]
Umbraculum pulchrum
 - Umbraculum pulchrum Lin, 1981 [SYNONYM SPECIES 9854:7DGLK nidx=null parent=7DGK7]
 + Umbraculum pulchrum G.-Y. Lin, 1981 [SYNONYM SPECIES 9857:9WR2F nidx=null parent=7DGK7]
Unio attiai
 - Unio attiai Cox, 1955 [SYNONYM SPECIES 9854:8763B nidx=null parent=879X3]
 + Unio attiai L. R. Cox, 1955 [SYNONYM SPECIES 9857:9WV58 nidx=null parent=9WTWX]
Urocoptis (Gongylostoma) ellioti
 - Urocoptis (Gongylostoma) ellioti (Poey, 1857) [SYNONYM SPECIES 9854:8V3M6 nidx=null parent=8TNTQ]
 + Urocoptis (Gongylostoma) ellioti (Poey, 1858) [SYNONYM SPECIES 9857:9WV5B nidx=null parent=86B7F]
Uronais digitata
 - Uronais digitata Gervais, 1838 [SYNONYM SPECIES 9854:7DY85 nidx=null parent=34XNN]
 + Uronais digitata (Muller, 1774) [SYNONYM SPECIES 9857:9WR2L nidx=null parent=34XNN]
Uronais furcata
 - Uronais furcata Gervais, 1838 [SYNONYM SPECIES 9854:7DXVS nidx=null parent=84WQZ]
 + Uronais furcata (Müller, 1774) [SYNONYM SPECIES 9857:9WKNN nidx=null parent=84WQZ]
Vanikoro tricarinata
 - Vanikoro tricarinata (Récluz, 1843) [ACCEPTED SPECIES 9854:7FH5M nidx=null]
 + Vanikoro tricarinata G. B. Sowerby II, 1875 [SYNONYM SPECIES 9857:9WR38 nidx=null parent=7FH64]
Varohadra oconnellensis
 - Varohadra oconnellensis (Cox, 1871) [SYNONYM SPECIES 9854:7TKVL nidx=null parent=4YS44]
 + Varohadra oconnellensis (J. C. Cox, 1871) [SYNONYM SPECIES 9857:9WT9W nidx=null parent=9WQQV]
Varohadra rockhamptonensis
 - Varohadra rockhamptonensis (Cox, 1873) [SYNONYM SPECIES 9854:7TKVM nidx=null parent=4YS46]
 + Varohadra rockhamptonensis (J. C. Cox, 1873) [SYNONYM SPECIES 9857:9WV5F nidx=null parent=9WQQX]
Vasticardium kenyanum
 - Vasticardium kenyanum (Cox, 1930) [ACCEPTED SPECIES 9854:7FJW8 nidx=null]
 + Vasticardium kenyanum (L. R. Cox, 1930) [ACCEPTED SPECIES 9857:9WR3M nidx=null]
Velepalaina strangei
 - Velepalaina strangei (W. H. Benson, 1853) [ACCEPTED SPECIES 9854:7FL3K nidx=null]
 + Velepalaina strangei Iredale, 1937 [SYNONYM SPECIES 9857:9WR3Q nidx=null parent=9X2R9]
Velu
 - Velu Ghauri, 1963 [ACCEPTED GENUS 9854:8HSPF nidx=null]
 + Velu Ghauri, 1964 [ACCEPTED GENUS 9857:9WMFP nidx=null]
Venericardia bicolor
 - Venericardia bicolor [SYNONYM SPECIES 9854:7FLW3 nidx=null parent=R646]
 + Venericardia bicolor (Lamarck, 1819) [SYNONYM SPECIES 9857:9WR3S nidx=null parent=R646]
Venericardia borealis
 - Venericardia borealis [SYNONYM SPECIES 9854:7FM83 nidx=null parent=6BSKH]
 + Venericardia borealis (Conrad, 1832) [SYNONYM SPECIES 9857:9WR3T nidx=null parent=6BSKH]
Venericardia dilecta
 - Venericardia dilecta [SYNONYM SPECIES 9854:7FM85 nidx=null parent=7FRNS]
 + Venericardia dilecta (E. A. Smith, 1885) [SYNONYM SPECIES 9857:9WR3V nidx=null parent=7FRNS]
Venericardia excelsior
 - Venericardia excelsior [SYNONYM SPECIES 9854:7FM87 nidx=null parent=7FRNS]
 + Venericardia excelsior Verco, 1908 [SYNONYM SPECIES 9857:9WR3W nidx=null parent=7FRNS]
Ventopelita leucocheilus
 - Ventopelita leucocheilus (Cox, 1868) [ACCEPTED SPECIES 9854:7FLFW nidx=null]
 + Ventopelita leucocheilus (J. C. Cox, 1868) [ACCEPTED SPECIES 9857:9WR3Z nidx=null]
Venus ignobilis
 - Venus ignobilis Anton in Philippi, 1847 [AMBIGUOUS_SYNONYM SPECIES 9854:7FN2L nidx=null parent=3Y2ZP]
 + Venus ignobilis Philippi, 1847 [SYNONYM SPECIES 9857:9WR44 nidx=null parent=3Y2ZP]
Venus jidoensis
 - Venus jidoensis Lischke, 1874 [SYNONYM SPECIES 9854:7FMQH nidx=null parent=6Q7BS]
 + Venus jidoensis [sic] [SYNONYM SPECIES 9857:9WR45 nidx=null parent=6Q7BS]
Venzavellidae
 - Venzavellidae [ACCEPTED FAMILY 9854:85GGB nidx=null]
 + Venzavellidae Gailite, 1967 [ACCEPTED FAMILY 9857:9WLPP nidx=null]
Vertigo vectiensis
 - Vertigo vectiensis Cox, 1924 [ACCEPTED SPECIES 9854:7TLMS nidx=null]
 + Vertigo vectiensis L. R. Cox, 1924 [ACCEPTED SPECIES 9857:9WR4L nidx=null]
Vitrina grandis
 - Vitrina grandis L. Pfeiffer, 1849 [SYNONYM SPECIES 9854:8524R nidx=null parent=84WWL]
 + Vitrina grandis H. Beck, 1838 [SYNONYM SPECIES 9857:9WV5G nidx=null parent=9WTKH]
Vitrina macgillivrayi
 - Vitrina macgillivrayi Cox, 1868 [SYNONYM SPECIES 9854:7FTFZ nidx=null parent=4DNGJ]
 + Vitrina macgillivrayi J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WR4Q nidx=null parent=9WQ74]
Vitrina mastersi
 - Vitrina mastersi Cox, 1868 [SYNONYM SPECIES 9854:8M49M nidx=null parent=3K67S]
 + Vitrina mastersi J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WRXY nidx=null parent=9WP25]
Vitrina megastoma
 - Vitrina megastoma Cox, 1868 [SYNONYM SPECIES 9854:5BMHK nidx=null parent=4DNGH]
 + Vitrina megastoma J. C. Cox, 1868 [SYNONYM SPECIES 9857:9WR4R nidx=null parent=9WQ73]
Vitrina planilabris
 - Vitrina planilabris Cox, 1866 [SYNONYM SPECIES 9854:5BMHZ nidx=null parent=4DNGJ]
 + Vitrina planilabris J. C. Cox, 1866 [SYNONYM SPECIES 9857:9WR4S nidx=null parent=9WQ74]
Vitrina superba
 - Vitrina superba Cox, 1871 [SYNONYM SPECIES 9854:5BMJJ nidx=null parent=3DVWN]
 + Vitrina superba J. C. Cox, 1871 [SYNONYM SPECIES 9857:9WR4T nidx=null parent=9WNSV]
Vitrumanthus
 - Vitrumanthus Kise, Montenegro, Santos, Hoeksema, Ekins, Ise, Higashiji, Fernandez-Silva & Reimer, 2022 [ACCEPTED GENUS 9854:9FPTK nidx=null]
 + Vitrumanthus Kise, Montenegro & Reimer, 2021 [ACCEPTED GENUS 9857:9WXCR nidx=null]
Vitrumanthus schrieri
 - Vitrumanthus schrieri Kise, Montenegro, Santos, Hoeksema, Ekins, Ise, Higashiji, Fernandez-Silva & Reimer, 2022 [ACCEPTED SPECIES 9854:9FPTL nidx=null]
 + Vitrumanthus schrieri Kise, Montenegro & Reimer, 2021 [ACCEPTED SPECIES 9857:9WXCS nidx=null]
Vitrumanthus vanderlandi
 - Vitrumanthus vanderlandi Kise, Montenegro, Santos, Hoeksema, Ekins, Ise, Higashiji, Fernandez-Silva & Reimer, 2022 [ACCEPTED SPECIES 9854:9FPTJ nidx=null]
 + Vitrumanthus vanderlandi Kise, Montenegro & Reimer, 2021 [ACCEPTED SPECIES 9857:9WXCQ nidx=null]
Viviparus (Neothauma) dubius
 - Viviparus (Neothauma) dubius Cox, 1926 [SYNONYM SPECIES 9854:5BN9M nidx=null parent=6S9FX]
 + Viviparus (Neothauma) dubius L. R. Cox, 1926 [SYNONYM SPECIES 9857:9WR4W nidx=null parent=9WPWW]
Viviparus (Viviparus) tiraspolitanus voronkovoensis
 - Viviparus (Viviparus) tiraspolitanus voronkovoensis Gozhik, 2007 [SYNONYM SUBSPECIES 9854:7V492 nidx=null parent=7V4BJ]
 + Viviparus (Viviparus) tiraspolitanus voronkovoensis Datsenko, 2007 [SYNONYM SUBSPECIES 9857:9WV8T nidx=null parent=9WV8S]
Viviparus alberti
 - Viviparus alberti Cox, 1926 [SYNONYM SPECIES 9854:5BNBK nidx=null parent=68H9Z]
 + Viviparus alberti L. R. Cox, 1926 [SYNONYM SPECIES 9857:9WR4X nidx=null parent=9WMZH]
Viviparus tiraspolitanus voronkovoensis
 - Viviparus tiraspolitanus voronkovoensis Gozhik, 2007 [ACCEPTED SUBSPECIES 9854:7V4BJ nidx=null]
 + Viviparus tiraspolitanus voronkovoensis Datsenko, 2007 [ACCEPTED SUBSPECIES 9857:9WV8S nidx=null]
Viviparus turris
 - Viviparus turris Cox, 1926 [SYNONYM SPECIES 9854:5BNP4 nidx=null parent=6S9FX]
 + Viviparus turris L. R. Cox, 1926 [SYNONYM SPECIES 9857:9WR4Z nidx=null parent=9WPWW]
Viviparus waylandi
 - Viviparus waylandi Cox, 1926 [SYNONYM SPECIES 9854:5BNPK nidx=null parent=73XG8]
 + Viviparus waylandi L. R. Cox, 1926 [SYNONYM SPECIES 9857:9WR52 nidx=null parent=9WPWX]
Voluta australiae
 - Voluta australiae Cox, 1872 [SYNONYM SPECIES 9854:5BPM2 nidx=null parent=CX2W]
 + Voluta australiae J. C. Cox, 1872 [SYNONYM SPECIES 9857:9WR54 nidx=null parent=CX2W]
Voluta brazieri
 - Voluta brazieri Cox, 1873 [AMBIGUOUS_SYNONYM SPECIES 9854:5BPM9 nidx=null parent=3WTJF]
 + Voluta brazieri J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WR55 nidx=null parent=3WTJF]
Voluta coniformis
 - Voluta coniformis Cox, 1871 [SYNONYM SPECIES 9854:5BPN6 nidx=null parent=5BQ45]
 + Voluta coniformis J. C. Cox, 1871 [SYNONYM SPECIES 9857:9WR57 nidx=null parent=9WR5H]
Voluta harfordi
 - Voluta harfordi Cox, 1869 [SYNONYM SPECIES 9854:5BPQ5 nidx=null parent=CWZ5]
 + Voluta harfordi J. C. Cox, 1869 [SYNONYM SPECIES 9857:9WR58 nidx=null parent=CWZ5]
Voluta kingi
 - Voluta kingi Cox, 1871 [SYNONYM SPECIES 9854:7TMLD nidx=null parent=CX2W]
 + Voluta kingi J. C. Cox, 1871 [SYNONYM SPECIES 9857:9WV5J nidx=null parent=CX2W]
Voluta macgillivrayi
 - Voluta macgillivrayi Cox, 1873 [SYNONYM SPECIES 9854:5BPRC nidx=null parent=336NB]
 + Voluta macgillivrayi J. C. Cox, 1873 [SYNONYM SPECIES 9857:9WR5F nidx=null parent=336NB]
Voluta sclateri
 - Voluta sclateri Cox, 1869 [SYNONYM SPECIES 9854:7FSP7 nidx=null parent=CX2W]
 + Voluta sclateri J. C. Cox, 1869 [SYNONYM SPECIES 9857:9WR5G nidx=null parent=CX2W]
Volutoconus coniformis
 - Volutoconus coniformis (Cox, 1871) [ACCEPTED SPECIES 9854:5BQ45 nidx=null]
 + Volutoconus coniformis (J. C. Cox, 1871) [ACCEPTED SPECIES 9857:9WR5H nidx=null]
Volvulella striatula
 - Volvulella striatula (A. Adams, 1862) [ACCEPTED SPECIES 9854:5BQT3 nidx=null]
 + Volvulella striatula (A. Adams, 1850) [ACCEPTED SPECIES 9857:9WR5J nidx=null]
Wallivertilla kingi
 - Wallivertilla kingi (Cox, 1864) [SYNONYM SPECIES 9854:7G6FM nidx=null parent=334HR]
 + Wallivertilla kingi (J. C. Cox, 1864) [SYNONYM SPECIES 9857:9WR5M nidx=null parent=9WNH6]
Westraltrachia derbyi
 - Westraltrachia derbyi (Cox, 1892) [ACCEPTED SPECIES 9854:7G7PM nidx=null]
 + Westraltrachia derbyi (J. C. Cox, 1892) [ACCEPTED SPECIES 9857:9WR5N nidx=null]
Westraltrachia oscarensis
 - Westraltrachia oscarensis (Cox, 1892) [ACCEPTED SPECIES 9854:7FW2B nidx=null]
 + Westraltrachia oscarensis (J. C. Cox, 1892) [ACCEPTED SPECIES 9857:9WR5P nidx=null]
Xenophora jezleri
 - Xenophora jezleri Cox, 1948 [SYNONYM SPECIES 9854:7G7WY nidx=null parent=5FBBF]
 + Xenophora jezleri L. R. Cox, 1948 [SYNONYM SPECIES 9857:9WR5W nidx=null parent=9WRG6]
Xenophora solarioides jezleri
 - Xenophora solarioides jezleri Cox, 1948 [ACCEPTED SUBSPECIES 9854:5FBBF nidx=null]
 + Xenophora solarioides jezleri L. R. Cox, 1948 [ACCEPTED SUBSPECIES 9857:9WRG6 nidx=null]
Ydiellaria
 - Ydiellaria Boulard, 1973 [SYNONYM SUBTRIBE 9854:8RGGM nidx=null parent=9L8PF]
 + Ydiellaria Boulard, 1973 [SYNONYM TRIBE 9857:9WSBL nidx=null parent=8JKHL]
Ydiellidae
 - Ydiellidae Boulard, 1973 [SYNONYM SUBTRIBE 9854:8RGGN nidx=null parent=9L8PF]
 + Ydiellidae Boulard, 1973 [SYNONYM TRIBE 9857:9WSBM nidx=null parent=8JKHL]
Yoldia inconspicua
 - Yoldia inconspicua [SYNONYM SPECIES 9854:5CS2S nidx=null parent=5CS6Z]
 + Yoldia inconspicua (Verrill & K. J. Bush, 1898) [SYNONYM SPECIES 9857:9WR63 nidx=null parent=5CS6Z]
Yoldia lenticula
 - Yoldia lenticula [SYNONYM SPECIES 9854:5CS3C nidx=null parent=7FZBP]
 + Yoldia lenticula (Møller, 1842) [SYNONYM SPECIES 9857:9WR64 nidx=null parent=7FZBP]
Zaptyx odontochila fulvicollis
 - Zaptyx odontochila fulvicollis (Zilch, 1954) [ACCEPTED SUBSPECIES 9854:7V4HJ nidx=null]
 + Zaptyx odontochila fulvicollis (Ehrmann, 1954) [ACCEPTED SUBSPECIES 9857:9WRG7 nidx=null]
Zebinella azaniensis
 - Zebinella azaniensis (Cox, 1927) [ACCEPTED SPECIES 9854:7GCNM nidx=null]
 + Zebinella azaniensis (L. R. Cox, 1927) [ACCEPTED SPECIES 9857:9WR68 nidx=null]
Zygitidae
 - Zygitidae Cox, 1960 [ACCEPTED FAMILY 9854:7NXCK nidx=null]
 + Zygitidae L. R. Cox, 1960 [ACCEPTED FAMILY 9857:9WLPT nidx=null]