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

M. thiarella.

M. spinulosa.

M. granifera.

M. carinifera.

M. truncatula.

M. fasciolata.

M. amarula. The crowned Melania. Pl. [20], fig. 3.

Covered with a black epidermis, under which the colour is deep chestnut; ovate oblong, with the whorls transversely keeled and coronated with triangular tubercles, from which emanate ciliated spines.

2. Melanopsis. Three species.

The shells of this genus are fluviatile, and distinguished from the Melania by having the upper part of the columella callous.