Descrição original: Bush, K. J. (1885). Additions to the shallow-water Mollusca of Cape Hatteras, N.C., dredged by the U.S. Fish Commission Steamer “Albatross”, in 1883 and 1884. Transactions of the Connecticut Academy of Arts and Sciences. 6: 453-480, pl. 44-45., available online at http://biodiversitylibrary.org/page/7477504 page(s): 468, pl. 45, fig. 15