Lewis, J. 1872. Shells of Tennessee, No. 2. Proceedings of the Academy of Natural Sciences of Philadelphia 24: 108-114. Available electronically.
‘Prime’ Lewis, 1856. Proc. Boston Soc. Nat. Hist. 6(1): 2.
Prime, 1865. Smithsonian Misc. Coll. (145): 41, fig. 34.
‘Prime’ Lewis, 1872. Proc. Acad. Nat. Sci. 24: 109.
(new name for Cyclas ovalis Prime, 1853)