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Show 250 MR. G. B. SOWERBY ON NEW SHELLS. [Apr. 28, brevissimo, margine dorsali utrinque valde declivi excavate ; margine interno obscurissime denticulato. Hab. Agulhas Bank, S. Africa. 15 fathoms. Mus. Taylor. SOLENELLA SUB.EQUALIS. (Pl. XXI. fig. 5.) S. testa subovata, subeequilaterali, tumidiuscula, breviuscula, latere postico lato, obsolete biangulato, inter angulos radiatim subde-presso, margine dorsali rectiusculo, margine ventrali abrupte sursum acclivi; latere antico angustiusculo obtuso, margine dorsali subdeclivi, margine ventrali abrupte sursum acclivi. Hab. Rio Janeiro. Mus. Leckenby. This third species of its genus is intermediate between the former two in its lateral proportions. In S. norrissii the anterior is much the shorter side; in S. cumingii the posterior is the shorter. The present species is equilateral. LEDA IRRADIATA. L. testa parva, ovata, radiatim nitente, minute concentrice lirata, tumida, subeequilaterali; latere postico subacuminato, versus terminum radiatim vix depresso ; latere antico acuminato, ad terminum arcuatim elevato ; lunula lata. Hab. China Seas. Mus. Taylor. A pretty little species, showing a brilliant irradiation resembling that of the cat's-eye jewel. DOLABRIFERA BRAZIERI. D. testa recta, planiuscula; apice elevato, recto, crasso, intus rotundato, convexo, extus concavo; margine postico declivi, concavo, margine labiali rectiusculo, antice incurvo, sinuato ; margine sinis-trali rectiusculo. Hab. Northhead, Botany Bay (Mr. Brazier). Only two specimens of this, the first species of the genus found on the south-west coast of Australia, were taken by Mr. John Brazier. N o note seems to have been made of the character of the animal; but the shell, which is large, differs from that of other known species. HELICINA MANGOENSIS. H . testa pallide lutea, supra aurantia, trochceformi; anfractibus convexis, infra medium carinatis, supra carinam spiraliter liratis, infra carinam subplanulatis, leeviusculis; carina lata, declivi, subtus vix crenulata; apice obtuso; apertura trigona,- margine basali convexiusculo. Hab. Mango Island, Fijis (Mr. Brazier). Unfortunately only one specimen of this remarkable Helicina has been taken. It is similar to H. josephinee, but m u c h more convex above. |