Pincerna (?) anceyi (Mabille, 1887)

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

Pincerna (?) anceyi (Mabille, 1887)

Alycaeus anceyi Mabille 1887: 151-152, pl. 3, figs 14, 15.

Alycaeus (Alycaeus) anceyi - Kobelt 1902: 341.

Type locality.

“Tonkin” (from the title).

Material examined.

Tonkin, coll. Mabille, MNHN-IM-2000-31797 (3 syntypes).

Remarks.

Protoconch very finely granulated, matte; R1 nearly smooth, with irregular, very fine growth lines, and some fine ribbing near suture, spiral striation not visible; R2 short, darker thicker and somewhat narrower light stripes, but overall surface smooth.

The shell shape is similar to species from the genus Pincerna , but there are no strong ribs in the upper whorls of the shell, the tube is elongated, and not extremely short and piriform. The tube is shorter than usual for the genus Alycaeus , but the shell shape agrees with the other species classified within the genus.