Metalycaeus caroli (Semper, 1862)
Alycaeus caroli Semper, 1862: 148-149.
Alycaeus (Chamalycaeus) caroli - Kobelt 1902: 353-354.
Chamalycaeus (Chamalycaeus) caroli - Zilch 1957: 142, pl. 5, fig. 4.
Metalycaeus caroli - Páll-Gergely and Auffenberg 2019: 384, fig. 7A, B.
Type locality.
"ad Digallorin vicum insulæ Luzon".
Material examined.
Philippines (N-Luzon), 'ad Digallorin vicum insulæ Luzon’ (Digollorin Bay: 16°50'N, 122°26'E), coll. C. Semper, 18 August 1860, SMF 158415 (2 syntypes); Luzon, Philippines, V W. MacAndrew Collection, Acc. no. 1563, NHMUK 20150120 (2 shells).
Remarks.
Protoconch elevated, spirally striated; R1 with irregular ribs and spiral striae of ca. the same strength, or slightly even stronger than the ribs; R2 relatively short, with alternating darker/wider and slimmer/lighter stripes; its surface is nearly smooth.