Stomacosmethis roebeleni ( Moellendorff , 1894)

Pall-Gergely, Barna, Sajan, Sheikh, Tripathy, Basudev, Meng, Kaibaryer, Asami, Takahiro & Ablett, Jonathan D., 2020, Genus-level revision of the Alycaeidae (Gastropoda, Cyclophoroidea), with an annotated species catalogue, ZooKeys 981, pp. 1-220 : 1

Stomacosmethis roebeleni ( Moellendorff, 1894)

Alycaeus roebeleni Möllendorff, 1894: 154, pl. 16, figs 20, 21.

Alycaeus (Alycaeus) roebeleni - Kobelt 1902: 350; Zilch 1957: 147, pl. 6, fig. 27.

Alycaeus roebeleni - Foon and Liew 2017: 62-64, figs 26, 31W.

Type locality.

"Samui Islands, Gulf of Siam" (from the title).

Material examined.

Golf von Siam, Koh-Samui, coll. Möllendorff, SMF 109317 (lectotype, designated by Zilch 1957); Siam, Samui, coll. Möllendorff, NHMW 40508 (13 shells, probably syntypes).

Remarks.

Protoconch elevated, no spiral lines visible; R1 with rather irregular, fine ribs, and somewhat weaker, dense spiral striae; R2 short, with roughly ten thicker/darker stripes, and much narrower/lighter stripes in-between, which are elevated from the surface.