Читать книгу The Book of Shells - Society for Promoting Christian Knowledge . Committee of General Literature and Education - Страница 21

This shell is found in the Icy Sea, and on the coast of Canada, and attains the length of seven inches. The animal of the Pyrula is at present unknown. There is a kind of keel or ridge along the edge of the whorls, which is obliterated in very old specimens. There are as many as eight-and-twenty species of this shell.

Turbo marmoratus.Pleurotoma babylonia. Trochus imperialis.