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

6. Clausilia. Twelve species.

Remarkable for having the termination of the lower whorl quite detached from the base of the shell.

Shell cylindrical, elongated, a little ventricose in the middle, generally fusiform, summit obtuse, the last turn smaller than the preceding; aperture small, irregular, oval; at least one plait, posterior to the columella, increasing with age so as to be separated, and forming at the posterior angle of the aperture a rounded sinus.

Clausilia torticollis.

C. truncatula.

C. retusa.

C. costulata.

C. corrugata.

C. inflata.

C. teres.