SMITH: LIST OF SOUTH AFRICAN MARINE MOLLUSCA. 401 
386. CERITHIDEA RissorpEA (Sowerby). 
Cerithium rissoideum, Sowerby: Thes. Conch., vol. ii, p. 889, pl. elxxxvi, 
fig. 289; in Reeve’s Conch. Icon., vol. xv ( Cerithidea), pl. ii, fig. 11. 
Hab.—Port Natal (Sowerby). 
This species, which is the same as Cerithidea crassilabrum of 
A. Adams, was originally described by Sowerby without any locality. 
Subsequently, in the Conch. Iconica, he placed in its synonymy the 
Cerithium erassilabrum of Krauss, and from this source was evidently 
derived the locality ‘‘ Port Natal.”” When he quoted erassilabrum he 
apparently had in his mind the Cerithidea described by Adams under 
that name, which is a West Indian form. 
387. Cattiostroma EUeLYPtum (A. Adams). 
Calliostoma euglyptus | sic], A. Adams: Sowerby, Marine Shells S. Afr., 
p. 42. 
This species occurs on the east coast of North America. The 
specimens so named by Mr. Sowerby belong to C. ornatum, Lamarck. 
388. Curron LABECULATUS, Reeve. 
Chiton labeculatus, Reeve: Martens, Jahrb. Deutsch. Malak. Gesell., 
vol. 1 (1874), p. 125. 
Hab.—Algoa Bay (Martens) ; ——? (Reeve). 
This species, according to P. P. Carpenter’s note with the type- 
specimen in the British Museum, is identical with Say’s C. apiculata, 
a well-known North American form. Martens is therefore evidently 
mistaken in his identification of a South African shell with this species. 
(See also Pilsbry, Man. Conch., vol. xiv, p. 36.) 
3889. ApLysIA MARMORATA, Blainville. — 
Aplysia marmorata, Blainville: Sowerby, Conch. Icon., vol. xvii, 
tigs. 2la, b. 
Hub.—Cape of Good Hope (Sowerby) ; coast of France (Blainville). 
Mr. Sowerby appears to have only known this species from Blainville’s 
figures (which he has copied) and description. It is therefore all the 
more remarkable that he has given a South African locality. 
390. PrraLoconcuus ocrosectus, Carpenter. 
Petaloconchus octosectus, Carpenter: Proc. Zool. Soc., 1856, p. 317. 
Hab.—? 8. Africa (Carpenter). 
Oncipium Peroni (Savigny ?). 
Fischer in his Manual quotes an Oneidiwm Peroni without any 
author’s name as from South Africa. Two species have been described 
under this name, one by Savigny and one by Cuvier. The former 
is probably the same as Semper’s O. Savignyt (Reisen im Archipel der 
Philippinen, Theil ii, vol. 11, p. 260). 
P.S.—Since the preceding paper was written a report by 
Mr. G. B. Sowerby upon a collection of Mollusca dredged off the 
shores of South Africa has been published in the ‘ Marine 
