. Annals of the Lyceum of Natural History of New-York. Science. Notes on Species of Corbiculadce. 77 less drawn up to an angle. The striae are also different, being more obsolete and less regular. The color of the epidermis is not the same. 24. Corbieula purpurea, nov. Corbicula purpurea, Prime in litt. Cat. 4. 1863. C. testa ovato-transversa, subtrigona, inflata, sequilaterali ; extremi- tatibus obtusis; umbonibus parvulis, tumidulis, incur- 26 vis, approximatis, violaceo maculatis ; regulariter sul- cata ; epidermide viridi, nitente vestita; cardine incras- sato; margarita profunde vi
. Annals of the Lyceum of Natural History of New-York. Science. Notes on Species of Corbiculadce. 77 less drawn up to an angle. The striae are also different, being more obsolete and less regular. The color of the epidermis is not the same. 24. Corbieula purpurea, nov. Corbicula purpurea, Prime in litt. Cat. 4. 1863. C. testa ovato-transversa, subtrigona, inflata, sequilaterali ; extremi- tatibus obtusis; umbonibus parvulis, tumidulis, incur- 26 vis, approximatis, violaceo maculatis ; regulariter sul- cata ; epidermide viridi, nitente vestita; cardine incras- sato; margarita profunde violacea ; lunula ovato-lan- ceolata. Long. 20; lat. 16 ; diam. 12 mill. Sab.—In flumine Tigris, Asiae. Collect. "Wheatley et Prime. The shell is transversely-oval, somewhat tri- gonal, inflated, and equilateral. The lateral CorbicuIa p«wea. margins are obtuse. The beaks are small, tumid, approximate, they curve inwardly and are marked with violet. The epi- dermis is green and polished. The striae are regular. The interior is a rich and brilliant violet or purple. The lunula is very distinct, and of a lighter shade than the rest of the shell. The hinge is rounded and somewhat broad. The Corbicula violacea is allied to certain forms of Corbi- cula cor, and more especially to those of the young of this species; it is, however, smaller, more equilateral, much more transverse, not so trigonal, the beaks are less full and less raised, and the hinge is less curved, less broad, and less robust. In coloring and in disposition of the striae, the two species are very 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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