Cook, H.J. & W.C. Mansfield. 1933. Journal of the Washington Academy of Science 23. Available electronically.
Mansfield in Cook & Mansfield, 1933. J. Washington Acad. Sci. 23: 267.
(error for Lampsilis Rafinesque, 1820)
Type species: Unio ovatus Say, 1817 = Lampsilis ovata
Cook & Mansfield, 1933. J. Washington Acad. Sci. 23: 257, figs. 1-4.