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Show 430 MR. E. A. SMITH ON SHELLS FROM ADEN. [June 16, genus, L. tigrina, as pointed out by Cooke \ is also found the West Indies and in the Indian Ocean. 234. CORBULA TAHEITENSIS, Lamarck. Hab. Tahiti; New Guinea (Brit. Mus.); Philippine Islands (Reeve, Conch. Icon. sp. 15). 235. GALEOMMA, sp. A single valve obtained by Major Yerbury is very like G.formosa, Deshayes, but rather more glossy and of a bright yellow colour. 236. DlPLODONTA ROTUNDATA, Turton. The three specimens from Aden appear to me inseparable from this European species. It is quoted by Caramagna from Zeila and Berbera. 237. MARTESIA STRIATA (Linn.). Hab. " England, West Indies, Philippines" (Tryon) ; Arafura Sea (' Challenger '). 238. MYTILUS PICTUS, Born. Hab. N.W. Africa to the Cape of Good Hope. Aden (Caramagna). The range of this species ( = M. afer, Gmelin) is about the same as that of M. perna, Linn., and I am inclined to believe that both forms belong to one and the same species. The three specimens from Aden, although not typical examples, evidently belong to this species. Three shells in the Cumingian collection labelled " tapro-banensis, Blanf. MSS., Galle, Ceylon," apparently belong to this species also. 239. M Y T I L U S SENEGALENSIS, Lamarck. Hab. Senegal (Lamarck) ; S. Africa (Krauss) ; Red Sea (Brit. Mus.) ; Aden (Caramagna under M. variabilis, Krauss). 240. MODIOLA AURICULATA, Krauss, var.? Hab. S. and E. Africa ; Gulf of Suez. Two specimens, one of a bright red or almost scarlet colour, the other of the normal tint, are probably half-grown specimens of this species, differing from the typical form in having the dorsal angle more central and no emargination or sinus in front of it. 241. SEPTIFER EXCISUS, Wiegmann. Hab. Madagascar, Mauritius, Mozambique, Mergui. 242. ARCA NAVICULARIS, Bruguiere. Hab. Suez, China, Amboina, N. and N.E. Australia, Solomon Is. Two dead valves are all that were obtained. , 1 Ann. & Mag. N. H. 1886, vol. xviii. p. 99. |