Lea, I. 1857. [Prososed change of the names of Unio umbrosus and Unio Wheatleyi to U. umbrans and U. catawbensis, respectively]. Proceedings of the Academy of Natural Sciences of Philadelphia 9: 104. Available electronically.

Lea, 1857. Proc. Acad. Nat. Sci. 9: 104.
Lea, 1862. Jour. Acad. Nat. Sci. 5 [O. 8]: 54 [58], pl. 1, fig. 200.
(new name for Unio wheatleyi Lea, 1857)
Type(s): HOLOTYPE USNM_85547, Catawba R., N.C.

Lea, 1857. Proc. Acad. Nat. Sci. 9: 104.
Lea, 1858. Jour. Acad. Nat. Sci. 4 [O. 6]: 72, pl. 13, fig. 53.
(new name for Unio umbrosus Lea, 1857)
Type(s): HOLOTYPE USNM_85121, Othcalooga Creek, Georgia.