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

C. obliqua.

C. calyculata.

C. obtusalis.

C. fontinalis.

C. Australis.

C. sulcata.

C. striatina.

C. Sarratogea.

C. cornea. The horny Cyclas. Pl. [9], fig. 7.

Species sub-orbicular, convex, thin, pellucid, with fine concentric striæ; cardinal teeth a little variable, always very small, and sometimes obsolete; summits not eroded, covered with a horn-coloured epidermis; interior bluish white.