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Show 1888.] MR. G. B. SOWERBY ON NEW Sl'ECIKS OF SHELLS. 207 2. Descriptions of sixteen new Species of Shells. By G. B. SOWERBY, F.Z.S., P.LS. [Received February 6, 1888.] (Plate XI.) LIMA SMITHI, sp. nov. (Plate XI. fig. 12.) L. testa suboblique ocata, leviter inflata, tenuis, alba ; costis circ. 40, rotundatis, mediocriter elevatis, levissime undulatis instructa ; area antica mediocriter elongata, leviter excavata, rugoso-plicata ; auriculis anticis parvis, declivibus, pjosticis magnis ; area cardinalis excavata. Long. 63, lat. 51 millim. Hab. Japan. Resembling in form L. excavata, but very decidedly ribbed. The auricles, cardinal area, and anterior lunule are much the same as in the gigantic Japanese species described by m e in the Society's ' Proceedings' for 1883 (L. goliath), but that species is smooth, excepting at the sides, and not so inflated. The size of the only specimen known of this interesting new species, which forms part of our National Collection, is small as compared * with L. excavata ; but although it has much the look of a full-grown shell, it is impossible to say that it might not attain to the size even of L. goliath. I have, however, no doubt that it is specifically distinct. LIMA CONCENTRICA, sp. nov. (Plate XI. fig. 20.) L. testa rotunde flabelliformis, obliqua, lata, comptressa, tenuiuscula, subpellucida, cceruleo-alba, concentrice fusco mult>fasciata, epidermide ferruginea induta; laminis numerosis, concentricis, parum elevatis, fusco anguste marginalis, et costis angustis circ. 80, confertissimis, complanatis, interruptis, subrugosis, partim divaricatis, superne attenuatis, interstitiisque minu-tissime crenulatis et puncturatis sculpta; area cardinalis angusta, mediocriter excavata ; auriculis parviusculis, fere cequalibus, anticis plicatis, rotunde inflexis ; pagina interna nitida, cceruleo-alba, margine externo minute crenulata, tenuiter fusco circumdata. Long. 30, maj. lat. 27 millim. Hab. Hongkong. A very distinct and characteristic species. It is broad and rather flat ; the radiating ribs are very narrow and close-set, and the interstices towards the umbones peculiarly punctured. The numerous concentric laminae are but little raised, but they are rendered conspicuous by being edged with brown. Since the publication of the monograph of the genus Lima in the ' Conchologia Iconica,' the following species have been added:- L. zealandica, Sovvb., Proc. Zool. Soc. 1876, p. 754. L. goliath, Sowb., Proc. Zool. Soc. 1883, p. 30. 15* |