Pincerna constricta (Benson, 1851) Fig. 39A
Cyclostoma constrictum Benson, 1851: 184-195.
Alycaeus constrictus var. minor Benson, 1859: 181.
Alycaeus constrictus - Reeve 1878: pl. 5, species 41.
Alycaeus (Alycaeus) constrictus - Kobelt 1902: 343.
Alycaeus (Cycloryx) constrictus - Godwin-Austen 1914: 347-348, pl. 147, figs 4, 4a; Godwin-Austen 1914: 348-349, pl. 154, figs 1, 1a; Gude 1921: 277-278.
Alycaeus (Cycloryx) constrictus , var. minor - Godwin-Austen 1914: 348.
Cycloryx constrictus - Ramakrishna et al. 2010: 70.
Pincerna constricta - Páll-Gergely 2017: 218, fig. 1A.
Type locality.
"ad Darjiling Himalayæ Sikkimensis".
Material examined.
UMZC I.103745 (1 syntype); Rungun Valley, Darjiling, NHMUK 1906.4.4.41 (5 shells).
Remarks.
Protoconch matte, without spiral lines; R1 with very sharp, widely spaced ribs, and extremely fine spiral lines; R2 very short, with alternating darker/wider and much narrower/lighter stripes (altogether ca. 12), overall surface smooth.