. Annals of the Lyceum of Natural History of New-York. Science. 64 Notes on Species of Coroicidadw. not only in respect to the flattening of the inferior margins in Corbicula difficilis, but that the Corbicula cor is larger, more transverse, less inequilateral, more inflated and more robust; the beaks are fuller, larger, and more prominent; the hinge is stronger and less rounded, and the stride are deeper. I have every reason to suppose that the Corbicula difficilis comes from Northern Africa. 7. Corbicula leriiiscnla, nov. spec Corbicula levinscula, Prime in litt. Cat. 4. 1863. C. testa ovato
. Annals of the Lyceum of Natural History of New-York. Science. 64 Notes on Species of Coroicidadw. not only in respect to the flattening of the inferior margins in Corbicula difficilis, but that the Corbicula cor is larger, more transverse, less inequilateral, more inflated and more robust; the beaks are fuller, larger, and more prominent; the hinge is stronger and less rounded, and the stride are deeper. I have every reason to suppose that the Corbicula difficilis comes from Northern Africa. 7. Corbicula leriiiscnla, nov. spec Corbicula levinscula, Prime in litt. Cat. 4. 1863. C. testa ovato-trigona, insequilaterali; latere antico producto, rotnn- Fig. 9. ciato, postico subtruncato ; subinflata ; umbonibns parvulis, depresses, apice denudato, albidis; mar- garita albido-lilaciua ; cardine angusto ; dentibus minutis; lunula inconspieua; sulcis regularibus, tenuibus ; epidermide nitidissima, fuscescente, ad raarginem inferiorem pallide viridi-flavescente vestita. Long. 27 ; lat. 26 ; diam. 17 mill. Hdb.—Cochinchina. Collect. Prime. The shell is rounded-trigonal, inequila- teral. The anterior side is produced and rounded, the posterior is subtruncated. The beaks are small, not much raised, and when denuded show a white surface. The valves are. light and not much inflated. The inte- rior is pale whitish lilac. The hinge is narrow and consider- ably curved. The teeth are delicate and small. The lunula is indistinct. The sulci are regular and close. The epidermis is highly polished, the upper portion is blackish-brown, and the portion near the inferior margin is pale greenish-yellow. This attractive species bears some resemblance to Corhimila difficilis, as far as the marginal outline is concerned ; in other. Corbicula 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 H
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