Lamarck has given a description of the animal of this genus, but only mentions that the scutcheon contains a shell or solid crustaceous body.
Parmacella Olivieri.
3. Limax. Four species.
The animal belonging to this genus is furnished with a coriaceous shield, wrinkled.
Limax rufus.
L. albus.
L. cinerus.
L. agrestis.
4. Testacella. One species.
Shell external, very small, ear-shaped; very depressed, summit inclined posteriorly, not spiral; aperture oval, very large; the left edge sharp, a little rolled inward, especially behind.