. Annals of the Lyceum of Natural History of New-York. Science. 214 Notes on Species of Corbiculadce. Compared with Corb. Lydigiana, the only species to which it is allied, it is less elevated, not so triangular, the stria? are less regular and deeper, and the epidermis is darker and coarser. 31. Corbicula Lydigiana, Prime. Corbicula Lydigiano, Prime. Journ. Couchyl. ix. 355. 1861. Loc. sub cit. x. 388., pi. xiv. f. 8. 1862. Prime Cat. 3. 1863. Fig. C. testa trigona, triangulari, aequilaterali, tumid ula, solidiuscula; sulcis regularibus; epidermide viridi-flavescente, nitente vestita, ad
. Annals of the Lyceum of Natural History of New-York. Science. 214 Notes on Species of Corbiculadce. Compared with Corb. Lydigiana, the only species to which it is allied, it is less elevated, not so triangular, the stria? are less regular and deeper, and the epidermis is darker and coarser. 31. Corbicula Lydigiana, Prime. Corbicula Lydigiano, Prime. Journ. Couchyl. ix. 355. 1861. Loc. sub cit. x. 388., pi. xiv. f. 8. 1862. Prime Cat. 3. 1863. Fig. C. testa trigona, triangulari, aequilaterali, tumid ula, solidiuscula; sulcis regularibus; epidermide viridi-flavescente, nitente vestita, ad umbonesbrunnea; lunula ovato-lanceolata ; umbonibus magnis, tnmidis, obliquis, erosis; pagina interna violacea; latere antico panic longiore, mar- gine inferiore arcuato ; cardine crasso ; dentibus car- dinalibus inaequalibus; lateralibus crassis. Long. 23; lat. 20; diam. 15 mill. Corbicula Lydigmna. Hah.—Siam. Collect. Jay, Cuming et Prime. The shell is triangular and equilateral. The valves are not much inflated. The anterior side is somewhat the longer. The beaks are large, raised, and commonly much eroded. The striae are regular, raised, and sharp. The epidermis is polished, it is very variable in color, running from a greenish-yellow into darker tints ; the portion of the shell in the vicinity of the beaks is usually dark brown or blackish. Some specimens exhibit rays of a darker hue, but varying in color and in breadth, pro- ceeding from the umbonal region to the inferior margin. The interior is violet. The teeth are unusually robust, but offer otherwise no distinctive characters. The lunula is well marked, but is not of a different color from the rest of the shell. One of our most attractive species, and closely allied to Corb. erosa and Pisidiifoj' 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 wor
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