A Manual of Conchology / According to the System Laid Down by Lamarck, with the Late Improvements by De Blainville. Exemplified and Arranged for the Use of Students.

by Thomas Wyatt

This genus was separated by Lamarck from the Donax on account of the peculiarity of the hinge.

Capsa lævigata.

Capsa Braziliensis.

C. lævigata. The smooth Capsa.

Triangular, sub-equilateral, obsoletely striated transversely; covered with a greenish yellow epidermis; inside violet towards the umbones.

C. Braziliensis. The Brazilian Capsa. Pl. [8], fig. 7.

Shell elongated, covered with epidermis; equivalve, close; the cardinal teeth reduced to one large sub-bifid tooth on the right valve, placing itself between two very thin ones on the left; ligament external, on the short side.

10. Crassina. One species.

Distinguished from the Crassatella by the position of the ligament, and from the Venus by having only two teeth on each valve; one of them on the left valve projects very slightly.

C. Danmoniensis. The Devonshire Crassina. Pl. [6], fig. 1.