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

S. siliqua.

S. cultellus.

S. planus.

S. minutus.

S. constrictus.

S. coarctatus.

S. rostratus.

S. violaceus.

S. vagina. The Razor Sheath. Pl. [31], fig. 5.

Valves equal, truncated at both ends; straight or slightly curved; summit terminal.