Caecum cf. gulosum Hedley, 1899

Vannozzi, Angelo, Pizzini, Mauro & Raines, Bret, 2015, Revision of South African Caecidae (Mollusca: Gastropoda), African Invertebrates 56 (1), pp. 99-99 : 115-116

Caecum cf. gulosum Hedley, 1899

Figs 13 , 25F

Material examined: SOUTH AFRICA: KwaZulu-Natal: 1 lv, Kosi Bay , main reef, 1–4 km S of estuary mouth, stone surfaces, ± - 15 m, dived D. Herbert, 4.v.1990 ( NMSA S2869 ) .

Description:Tube evenly arched, colourless, semitransparent. Surface crossed by coarse growth lines, assuming the form of small, hardly visible rings toward the aperture. The tube widens before the aperture, forming a ring-like swelling, which is crossed by some ill­defined annulations, after which it contracts again, ending with a very small ring. Microsculpture composed by a fine worm­like striation. Septum dome­shaped, protruding, with a low dorsal mucro. Periostracum colourless. Operculum thin, flat, corneous, multispiral, internal side with a slightly raised nucleus sorrounded by a tight spire of 7 whorls, external side with a concave nucleus. Length: 1.9 mm.

Distribution: Caecum gulosum is found in the eastern Pacific Ocean ( Pizzini et al. 2013). A single specimen tentatively attributed to this species was found on the eastern coast of South Africa ( Fig. 13 ).The presence of Caecum gulosum in South Africa needs confirmation.

Figures

Fig. 13. Distribution map of Caecum inhacaense Albano & Pizzini, 2011 (■), C. cf. gulosum Hedley, 1899 (▲) and C. cf. musorstomi (▼). White symbol indicates the type locality.

Fig. 25. South and western African Caecum and Parastrophia species: (A) P. avaricosa sp. n., holotype, Mzamba (NMSA E1665/T3354); (B, C) P.ornata sp. n., Mzamba,near Natal border — (B) holotype (NMSA W9677/T3379), (C) paratype (JPM 2119); (D) C. sepimentum de Folin, 1868, Kosi Bay (NMSA S2010); (E) C. cf. oahuense Pilsbry, 1921, Aliwal Shoal, off Umkomaas area (JPM); (F) Caecum cf. gulosum Hedley, 1899, Kosi Bay (NMSA S2869); (G, H) C. succineum de Folin, 1880 — (G) between Bhanga Nek andKosi Bay (NMSAS1586), (H)Aliwal Shoal, off Scottburgh (NMSA W9684); (I) C. cf. glabrum (Montagu, 1803), Knysna, Gericke Point, Sedgefield (NMSA W9658); (J) C. glabrum (Montagu, 1803), Rabat, Morocco (MP); (K) C.lindae sp. n., holotype, Cape Morgan Lighthouse (NMSA W9682/T3924); (L, M) C. cf. musorstomi Pizzini, Raines & Vannozzi, 2013, Landers reef (JPM); (N, O) C.austrafricanum sp.n., paratypes,Walker’s Point,W of Knysna (NMSA W9656/T3351);(P) C.knysnaense sp.n., paratype,Knysna,Gericke Point,Sedgefield (NMSAW9673/ T3364); (Q) C. intortum sp. n., paratype, Walker’s Point, W of Knysna (NMSA W9669/T3360); (R) C. macrum van der Linden & Moolenbeek, 2000, Charbonnier, Senegal (MP); (S, T) C. crassum de Folin, 1870, Gabon (MP): (S) adult; (T) juvenile. Scale bar = 1 mm.