Observations on the Genus Unio, together with descriptions of new genera and species in the families Naiades, Conchae, Colimacea, Lymnaeana, Melaniana, and Peristomiana
Philadelphia: Printed for the Author, (1842). Hardcover. Vol. 3 of 13 volumes Lea published occasionally between 1834 and 1874. Quarto, original printed boards, in remarkable condition with just slight rubbing and wear at bottom of front board, 88 pp, 23 fine lithograph plates of shells, contents bright and clean. Lea.....