Chamalycaeus sumatranus (E. von Martens, 1900) Fig. 12A
Alycaeus (Orthalycaeus) sumatranus E. von Martens, 1900: 6-7.
Alycaeus (Alycaeus) sumatranus - Kobelt 1902: 351.
Alycaeus sumatranus - van Benthem Jutting 1959: 77-78, fig. 5.
Type locality.
“Unter-Lankat” .
Material examined.
Unter-Lankat, coll. Schneider, ZMB/MOLL 51748 (1 syntype, labelled as holotype; photographs examined).
Remarks.
The original description does not mention the number of examined specimens. Thus, we consider the specimen labelled holotype (ZMB/MOLL, 51748) as a syntype.
Protoconch elevated, no spiral striation visible; R1 with rather irregular, low ribs and spiral striation roughly of the same strength; R2 long, with widely spaced, sharp ribs.