Descrição original: Conrad, T. A. (1831-1832). American Marine Conchology. Philadelphia:printed for the Author, pp. 1-12, pl. 1-2. [April 1831]; pp.13-28, pl. 3-5. [September 1831]; pp. 29-40, pl. 6-8 [May 1832]; pp. 41-72 and unpaginated index (1 p.), pl. 9-17. , available online at http://biodiversitylibrary.org/item/41713 page(s): 32, pl. 6, fig. 3