(ofUnio caeruleus I. Lea, 1831)Lea, I. (1831). Observations on the naïades, and descriptions of new species of that and other families. <em>Transactions of the American Philosophical Society.</em> (NS) 4: 63-121, plates 3-18., available online athttp://biodiversitylibrary.org/page/24786630 page(s): 95, pl. 13 fig. 25 [details]
original description(ofUnio caeruleus I. Lea, 1831)Lea, I. (1831). Observations on the naïades, and descriptions of new species of that and other families. <em>Transactions of the American Philosophical Society.</em> (NS) 4: 63-121, plates 3-18., available online athttp://biodiversitylibrary.org/page/24786630 page(s): 95, pl. 13 fig. 25 [details]