Pincerna costata (Godwin-Austen, 1914)
Alycaeus (Cycloryx) costatus Godwin-Austen, 1914: 360-361, pl. 154, figs 2, 2a.
Alycaeus (Cycloryx) costatus - Gude 1921: 278.
Cycloryx costatus - Ramakrishna et al. 2010: 71.
Pincerna costata - Páll-Gergely 2017: 214.
Type locality.
"Dikrang Valley, Dafla Hills".
Material examined.
Toruputu Peak, Dafla Hills, Dikrang valley, Dafla, leg. Godwin-Austen, NHMUK 1903.7.1.2596 (18 syntypes).
Remarks.
Protoconch matte, no spiral lines visible; R1 with regular, widely spaced, sharp ribs and extremely fine spiral striation; R2 very short, with ca. five ribs which are similar to those of in R2 but denser.