Fissurella mutabilis G.B. Sowerby (I), 1835

Fissurella mutabilis G.B. Sowerby (I), 1835a: 127. G.B. Sowerby (I), 1835b: 6, figs 67, 70. Krauss, 1848: 65. Martens, 1874: 127, no. 65. Vélain, 1877: 121. Watson, 1886: 33. G.B. Sowerby (III), 1889a: 12. G.B. Sowerby (III), 1892: 47. G.B. Sowerby (III), 1894: 373. Martens, 1904: 50, 55. Bartsch, 1915: 176. Odhner, 1919: 32. Barnard, 1963a: 285, fig. 21a. Kennelly, 1964: 52, pl. 3, fig. 8. Day, 1969: 153. Kensley, 1973: 30, fig. 44. Richards, 1981: 33, pl. 7, fig. 43. Kilburn & Rippey, 1982: 36, pl. 6, fig. 11. Steyn & Lussi, 1998: 12, fig. 18. Branch et al., 2010: 172, fig. 75.3. Marais, 2011: 27. Type loc.: ‘ ad Caput Bonae Spei ’ [Cape of Good Hope]; location of type material unknown (could not be found in NHM, Salvador pers. comm. iii/2015).

Fissurella sagittata Reeve, 1849 in 1849–50: pl. 6, sp. 34. Turton, 1932: 205. Type loc.: Cape of Good Hope; two syntypes in NHM (NHMUK 197559), Salvador pers. comm. (iii/2015).

Fissurella rota Reeve, 1850 in 1849–50: pl. 12, figs 79, 81. G.B. Sowerby (III), 1892: 48. Turton, 1932: 205. Kennelly, 1964: 52, pl. 3, fig. 10. Type loc.: Cape of Good Hope; four syntypes in NHM (NHMUK 20150076), Salvador pers. comm. (iv/ 2015).

Fissurella neglecta (non Deshayes, 1830)—G.B. Sowerby (III), 1889a: 12. G.B. Sowerby (III), 1892: 48.

Fissurella mutabilis var. aurantia G.B. Sowerby (III), 1921: 127. Type loc.: Port Alfred, E. Cape; type material in OXUM (fide Turton 1932: xiv).

Fissurella (Cremides) mutabilis — Dautzenberg, 1929: 544.

Fissurella mutabilis aurantia — Turton, 1932: 205.

Fissurella alboradiata Turton, 1932: 205, pl. 53, no. 1424. Type loc.: Port Alfred, E. Cape; type material probably in OXUM, but verification required.

Fissurella navicula Turton, 1932: 206, pl. 53, no. 1428. Type loc.: Port Alfred, E. Cape; type material probably in OXUM, but verification required.

Distribution. Madagascar, southern Mozambique, the entire South African coast and Namibia; intertidal and nearshore reefs to 25 m. Also recorded from Îles S t -Paul and Amsterdam in the southern Indian Ocean (Vélain 1877).

Notes. This species needs to be examined in detail using molecular techniques to assess whether it might in fact represent a complex of cryptic species.