Diodora calyculata (G.B. Sowerby (I), 1823)

Fissurella calyculata G.B. Sowerby (I), 1823 in 1821–1834: 21, pl. 123 (147), fig. 4. G.B. Sowerby (I), 1835b: 3, figs 19, 21. Krauss, 1848: 68. G.B. Sowerby (III), 1892: 47. Type loc.: not given; syntypes in NHM (NHMUK 1975058).

Fissurella (Glyphis) calyculata — Martens, 1904: 55.

Fissuridea calyculata — Bartsch, 1915: 177. Thiele, 1925: 6 [40].

Diodora calyculata — Barnard, 1963a: 290. Kensley, 1973: 29, fig. 32. Christiaens, 1974: 92. Richards, 1981: 33, pl. 7, fig. 36. Kilburn & Rippey, 1982: 35, pl. 6, fig. 5. Steyn & Lussi, 1998: 10, fig. 9. Marais, 2011: 26.

Glyphis calyculata — Kennelly, 1964: 53, pl. 3, fig. 17.

Distribution. Southern KwaZulu-Natal (Port Edward) to False Bay; beach-drift to 420 m (living 10–45 m).