Stomacosmethis fultoni degenerans (Fulton, 1901)

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 fultoni degenerans (Fulton, 1901) Fig. 43B)

Alycaeus fultoni var. degenerans Fulton, 1901: 242.

Alycaeus (Alycaeus) fultoni degenerans - Zilch 1957: 147, pl. 6, fig. 30.

Type locality.

"Gomanton, N. Borneo".

Material examined.

N-Borneo, Gomanton, leg. Fulton, coll. Möllendorff, SMF 109280 (lectotype, designated by Zilch 1957); Same data, SMF 109281 (2 paralectotypes).

Remarks.

Protoconch without spiral lines, rather matte; R1 with rather regular, strong, sharp ribs and very weak spiral lines; R2 very short, with alternating darker/wider and lighter/narrower stripes; lighter stripes are very slightly elevated from the surface.

Figures

Figure 43. Shells of Stomacosmethis Bollinger, 1918 species A Stomacosmethis fultoni (Moellendorff, 1896), lectotype (SMF 109280) B Stomacosmethis fultoni degenerans (Fulton, 1901), lectotype (SMF 109282). All figures: Barna Pall-Gergely, courtesy Ronald Janssen.