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

Shell or case cartilaginous, transparent, conical posteriorly where the animal adheres, and prolonged above like a long hollow semi-cylinder, under which the animal can take shelter.

C. Peronii. Peron’s Cymbulia.

Shell shaped like a shoe, somewhat gelatinous or cartilaginous, very transparent crystalline, oblong pointed at the vertex, truncated at the base.

6. Pneumodermon. Has no shell. One species.

P. Peronii.

FAMILY II.
Phyllidiacea. Four genera.

1. Phyllidia. Three species.

The animals of this genus are covered with a coriaceous skin, but without a shell.

Phyllidia varicosa.

P. pustulosa.