Lea, I. (1857). Proposed […] change of the name of Unio umbrosus and Unio Wheatleyi, to U. umbrans and U. Catawbensis. Proceedings of the Academy of Natural Sciences of Philadelphia. 9: 104 [after 28 April 1857; possibly published in 1858].
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Lea, I.
1857
Proposed […] change of the name of <i>Unio umbrosus</i> and <i>Unio Wheatleyi</i>, to <i>U. umbrans</i> and <i>U. Catawbensis</i>
Proceedings of the Academy of Natural Sciences of Philadelphia
9: 104 [after 28 April 1857; possibly published in 1858]