Lea, I. (1842). Description of new fresh water and land shells. Transactions of the American Philosophical Society. (NS) 8(2): 163-250 (+ 1 page contents, 1 page corrigenda), plates 5-27 [16 December; also issued separately as volume III of "Observations on the genus Unio"].
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Lea, I.
1842
Description of new fresh water and land shells
Transactions of the American Philosophical Society
(NS) 8(2): 163-250 (+ 1 page contents, 1 page corrigenda), plates 5-27 [16 December; also issued separately as volume III of "Observations on the genus <I>Unio</I>"]