Sinum perspectivum (Say, 1831: pl. 25, figs 1, 1a) White Baby Ear Type Figure

It was drawn by the Thomas Say's wife, Lucy, while the couple were resident in New Harmony, Indiana

Say, T., 1831. American Conchology, or descriptions of the shells of North America. Illustrated by colored figures from original drawings executed from nature 3. Thomas Say, New Harmony, Indiana. [40 pp., unpaginated] + pls. 21-30. [Stated date: Sept., 1830; true date: Sept., 1831]