Descrição original: Verrill A.E. & Bush K.J. (1898). Revision of the deep-water Mollusca of the Atlantic coast of North America, with descriptions of new genera and species. Part I. Bivalvia. Proceedings of the United States National Museum. 20: 775-901., available online at http://biodiversitylibrary.org/page/15838668 page(s): 777