Lea, I. (1852). Description of a new Helix, from California, and a new characteristic form of certain American Colimaceae. Transactions of the American Philosophical Society. (NS) 10(3): 303-305, pl. 30 [1 June 1852].
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Lea, I.
1852
Description of a new <i>Helix</i>, from California, and a new characteristic form of certain American Colimaceae.
Transactions of the American Philosophical Society