. Transactions - American Philosophical Society. Smcl»i)^ FlVil * \P« > ? ^ yK NEW FRESH WATER AND LAND SHELLS. 215 thick; ligament small, linear; epidermis yellow, with numerous or large darkgreen rays over nearly the whole disk; umbonial slope carinate; cardinal teethlarge, pointed; lateral teeth oblique and straight; anterior cicatrices distinct;posterior cicatrices distinct, the smaller one being placed on the end of the lateraltooth; dorsal cicatrices small, placed on the upper side of the cavity of the beaks;cavity of the shell very shallow; cavity of the beaks small and angula
. Transactions - American Philosophical Society. Smcl»i)^ FlVil * \P« > ? ^ yK NEW FRESH WATER AND LAND SHELLS. 215 thick; ligament small, linear; epidermis yellow, with numerous or large darkgreen rays over nearly the whole disk; umbonial slope carinate; cardinal teethlarge, pointed; lateral teeth oblique and straight; anterior cicatrices distinct;posterior cicatrices distinct, the smaller one being placed on the end of the lateraltooth; dorsal cicatrices small, placed on the upper side of the cavity of the beaks;cavity of the shell very shallow; cavity of the beaks small and angular; nacrewhite and iridescent. Remarks.—Two specimens only were received by me from Mr. Edgar, towhom I dedicate it. It is an interesting little species, and is remarkable for itsform and the dark green rays, which almost cover the yellow ground. Thelarger specimen has a wide furrow nearly down the centre of the valve fromthe beak—the smaller one is only flattened there. In both specimens the pos-terior slope is devoid of rays. Unio dola
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