. Annals of the Lyceum of Natural History of New-York. Science. JVotes on Species of Coruiculadce. 215 32. Corbictila Pisidiiformis, nov. spec C. testa minima, trigona, triangular!, obliqua, inaequilaterali, alta, subinflata; superius conica, inferius arcuata; latere FlG 42 antico prodncto, postico brevi, subtruncato • umbo^ nibus tumidulis; lunula distincta; striis regularibus, reuiotis; epidermide viridi-flavescente, nitente vestita; valvis solidis, intus pallide violaceis; cardine incras- sato. Long. 5; lat. 5; diam. 3 mill. Hab.—Siam. Collect. Wheatley et Prime. The shell is very small, tr
. Annals of the Lyceum of Natural History of New-York. Science. JVotes on Species of Coruiculadce. 215 32. Corbictila Pisidiiformis, nov. spec C. testa minima, trigona, triangular!, obliqua, inaequilaterali, alta, subinflata; superius conica, inferius arcuata; latere FlG 42 antico prodncto, postico brevi, subtruncato • umbo^ nibus tumidulis; lunula distincta; striis regularibus, reuiotis; epidermide viridi-flavescente, nitente vestita; valvis solidis, intus pallide violaceis; cardine incras- sato. Long. 5; lat. 5; diam. 3 mill. Hab.—Siam. Collect. Wheatley et Prime. The shell is very small, triangular, inequi- CorbloulamdUformis" lateral, and somewhat inflated. The superior portion is conical and the inferior rounded. The anterior side is distended, the posterior is short and somewhat truncated. The beaks are pro- minent. The lunula is well marked, but not of a distinct color. The striae are deep, regular, and distant. The epidermis is polished and of a yellowish-green color. The valves are solid, their interior is pale violet. The hinge is robust and broad. Some specimens exhibit a few fine rays of a darker color, run- ning from the beaks to the inferior margin. The Corb. Pisidiiformis is remarkable for being the smallest known species of the genus. In outline and shape it bears great resemblance to certain species of Pisidium. It is closely allied to Corb. Lydigiana ; irrespective of size, it differs from that spe- cies in being more solid, more convex, more conical, less equi- lateral, and in having heavier striae. 33. Corbicula triangularis, Desbayes. Corbicula triangularis, Deshayes. Proc. Zoo], xxii. 345. 1854. Biv. Brit. Mus. 234. 1854. Prime Cat. 4. 1863. C. testa trigona, sequilaterali, alta, tumidula, solida; utroque latere. 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 Lyceu
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