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. bicostalis.

C. viridis.

C. mytiloides.

C. phasianoptera.

C. avicularis. The avicular Crenatula. Pl. [14], fig. 2.

Answers to the above description.

C. mytiloides. The muscle-shaped Crenatula.

Oblong, ovate, oblique; base acute; violet coloured, with obscure radiations.

2. Perna. Ten species.

In speaking of the Crenatula, we gave the characteristic distinction, which regarded it natural and expedient to make the Perna form a different genus.