. Transactions - American Philosophical Society. one of which is sub-carinate on the umbonialslope. A second one is enlarged posteriorly exhibiting the female of the three are rather smaller than that received from Dr. Boykin. Unio Edgarianus. Plate 15, Fig. 30. Testa triangulari, compressd, emarginata; vahulis crassis, 7iatibus elevatis; epidermide luted, valderadiatd; dentibus cardinalihus magnis, lateralibus rectis; margarita alba et iridesctnte. Shell triangular, compressed, emarginate; valves thick; beaks elevated; epidermis yellow, much radiated;cardinal teeth large; latera
. Transactions - American Philosophical Society. one of which is sub-carinate on the umbonialslope. A second one is enlarged posteriorly exhibiting the female of the three are rather smaller than that received from Dr. Boykin. Unio Edgarianus. Plate 15, Fig. 30. Testa triangulari, compressd, emarginata; vahulis crassis, 7iatibus elevatis; epidermide luted, valderadiatd; dentibus cardinalihus magnis, lateralibus rectis; margarita alba et iridesctnte. Shell triangular, compressed, emarginate; valves thick; beaks elevated; epidermis yellow, much radiated;cardinal teeth large; lateral teeth straight; nacre white and iridescent. Hab. Holston River, Tenn. Prof. Troost and Dr. Currey. Tennessee River, at Florence, Ala. Mr. Cabinet, and Cabinets of Mr. Edgar, Dr. Currey and Prof Troost. Diam. .8, Length , Breadth inches. Shell triagular, compressed, emarginate at base, flattened or widely furrowed before the umbonial slope; substance of the shell thick; beaks elevated and ^ tn-nJ. Jm ,M/ .%:^^^^^^^>?^^y,
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