| OCR Text |
Show 1891.] MR. E. A. SMITH ON SHELLS FROM ADEN. 427 subvalidus, centralis; pagina interna nitida, radiatim obsolete striata ; sinus pallii profundus, superne subangulatus. Longit. 18^ millim., alt. 14, diam. 6. This species has oblique sculpture similar to that in T. rhombnides, Quoy and Gaimard. It is, however, not nearly so narrow as that species, but agrees with it in dentition. Only the posterior slope is free from oblique striae, but it has more distinct concentric lines. In certain lights the whole surface exhibits faint or subobsolete striation. When the valves are closed, the anterior dorsal slope exhibits a lanceolate lunular depression. 214. TELLINA (PHYLLODA) FOLIACEA, Linn. Hab. Red Sea, Indian Ocean, Moluccas, Philippines: Aden (Caramagna). 215. TELLINA (MACOMA) DUBIA, Deshayes. Tellina dubia, Deshayes, Proc. Zool. Soc. 1854, p. 371 ; Sowerby, Conch. Icon. pi. xlvii. p. 279. Hab. 1 Sowerby's figure does not represent the posterior end of this species sufficiently truncate. 216. TELLINA (METIS) EDENTULA, Spengler. Hab. Philippines, Ceylon ; China and Kurrachee (Brit. Mus.). This species is T. angulata, Chemnitz, not of Linne. 217. SEMELE CHINENSIS, A. Adams. Hab. Indian Ocean, Mergui Archipelago, China. Amphidesma cordiformis (Reeve, Conch. Icon. fig. 30) is the same as this species. It is uncertain whether he has correctly identified that species of Chemnitz, who gives the West Indies as the locality of his shell. 218. SEMELE (IACRA) SEYCHELLARUM (A. Adams). Scrobicularia seychellarum, A. Ad. Proc. Zool. Soc. 1856, p. Hab. Seychelles. This interesting species, originally located in the genus Scrobicularia, was subsequently placed in a subgenus of that group named Iacra by H. & A. Adams. Fischer in his ' Manual' considered it a subgenus of Syndesmya or Abra. This location is, in my opinion, correct, for the dentition of the hinge and the ligament agree in detail with that group, which, however, I regard only as a subgenus of Semele. 219. DONAX (MACH^ERODONAX) SCALPELLUM, Gray. Hab. Gulf of California. The above-named locality, given by Reeve (Conch. Icon. sp. 39), has never been confirmed, and I think there is little doubt that it is incorrect. The specimens from Aden agree in form, colour, sculpture, and every other respect with that figured by Reeve. One example, however, has the ground-colour yellowish instead of bluish white. |
