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.