Pincerna liratula (Preston, 1907)

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 liratula (Preston, 1907) Fig. 39B

Alycaeus (Pincerna) liratula Preston, 1907: 206.

Alycaeus (Alycaeus) liratulus - Laidlaw 1928: 6, 35.

Alycaeus liratulus - van Benthem Jutting 1959: 77; Foon and Liew 2017: 54-56, figs 7C, 23, 31B.

Pincerna liratula - Egorov 2013: 34, figs 59a, b; Páll-Gergely 2017: 214, fig. 1C; Páll-Gergely et al. 2017: 10, fig. 3D.

Type locality.

“Ke-lan-tan”.

Material examined.

Ke-lan-tan, Malay Penins., ex coll. Preston, 1909, ANSP 99391 (1 syntype, photographs examined); Ke-lan-tan, Purchased of Mr. H.B. Preston, NHMUK 1907.5.20.191-192 (2 syntypes).

Remarks.

Protoconch relatively low, no spiral lines visible; R1 with widely spaced, relatively low ribs, with finer spiral striation; R2 moderately short, with strong, irregular ribs and weak spiral striation; outer surface of the operculum rather glossy, multispiral, with an elevated ring on the edge of the nucleus.

Figures

Figure 39. Type species of alycaeid genus-group taxa A Pincerna constricta (Benson, 1851), syntype (NHMUK 1906.4.4.41; type species of Cycloryx) B Pincerna liratula (Preston, 1907), syntype (NHMUK 1907.5.20.191; type species of Pincerna) C Stomacosmethis sarasinorum (Bollinger, 1918), lectotype (NHMB 2411. a; type species of Stomacosmethis). Photographs: Harold Taylor (A, B); Eduard Stoeckli (C).