Stomacosmethis rimatus (O. Boettger, 1893) Fig. 45B
Alycaeus rimatus Boettger, 1893: 196-197.
Alycaeus (Alycaeus) rimatus - Kobelt 1902: 350; Zilch 1957: 147, pl. 6, fig. 31.
Type locality.
"Brunei, W.-Borneo".
Material examined.
N-Borneo, Brunei, leg. O. Staudinger, coll. O. Boettger, SMF 109315 (lectotype, designated by Zilch 1957); Same data, SMF 109316 (2 paralectotypes).
Remarks.
Protoconch very finely granulated, matte; R1 with irregular, strong ribs and much weaker spiral striation; R2 very short, with alternating darker/thicker and lighter/slimmer stripes, which are slightly elevated from the surface.