. Annals of the Lyceum of Natural History of New-York. Science. 230 Notes on Species of Corbiculadce. epidermicle atro-fuscescente vestita; valvis intus albis ad margines inferne posticeque violaceis ; cardine incrassato. Long. 97; lat. 7S; diam. 40 mill. Hah.—Nicobar. Collect. Prime. The shell is large, transversely oval, insequilateral, heavy, and somewhat compressed. The anterior side is short and rounded, the posterior is broader. The beaks are placed obliquely. The epidermis is blackish. The interior of the valves is white with violet on the inferior and posterior margins. The shell is mo
. Annals of the Lyceum of Natural History of New-York. Science. 230 Notes on Species of Corbiculadce. epidermicle atro-fuscescente vestita; valvis intus albis ad margines inferne posticeque violaceis ; cardine incrassato. Long. 97; lat. 7S; diam. 40 mill. Hah.—Nicobar. Collect. Prime. The shell is large, transversely oval, insequilateral, heavy, and somewhat compressed. The anterior side is short and rounded, the posterior is broader. The beaks are placed obliquely. The epidermis is blackish. The interior of the valves is white with violet on the inferior and posterior margins. The shell is mode- rately broad and strong. Comparing this species with Batissa Keraudrenia we find that it is transversely longer and smaller, that the posterior margin is more rounded, and that the primary teeth are broader and shorter; the color of the epidermis, moreover, is different. 3. Batissa triquetra, Deshayes. Batissa triquetra, Deshayes. Proc. Zool. xxii. 13. 1854. Biv. Brit, Mus. 236. 1854. Prime Cat. 5. 1863. B. testa parva, trigona, obliqua, insequilaterali, compressiuscula ; mar- FlG 61. gine antico dilatato, postico obtuso, in- feriore vix arcuato; umbonibus brevi- bus ; valvis tenuibus intus albis; epi- dermide nigro, viridescente vestita; cardine angusto, dentibus lateralibus elongatis, angnstis, subseqnalibus. Long. 39 ; lat. 36 ; diam. 11 mill. Ilab.—Insulse Philippinenses, Australia. Collect. Cuming et Prime. Batissa triquetra. ml i n • n l ' l i The shell is small, trigonal, ob- lique, inequilateral, and somewhat compressed. The anterior margin is produced, the posterior is obtuse, and the inferior. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lyceum of Natural History (New York, N. Y. ). New-York :
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