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

S. veneriformis.

S. Australis. The Australian Saxicava. Pl. [7], fig. 6.

Answers to the above description.

S. Gallicana. The Gallic Saxicava.

Oblong, wrinkled, truncated at the posterior extremity, one valve larger than the other; pale horn colour.

2. Petricola. Thirteen species.

This genus possesses the same faculty of boring rocks as the Saxicava; it is distinguished from the latter genus by the hinge having one or two teeth in each valve.

Shell sub-trigonal, transverse, inequilateral; upper side narrowed and a little gaping; lower side rounded.

Petricola lamellosa.

P. ochroleuca.