Pilsbry, H. A. & Ferriss, J. H. (1906). Mollusca of the Southwestern States. II. Proceedings of the Academy of natural Sciences of Philadelphia. 58: 123-160 [20 June 1906], 161-175, pls 5-9 [24 July 1906].
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Pilsbry, H. A. & Ferriss, J. H.
1906
Mollusca of the Southwestern States. II
Proceedings of the Academy of natural Sciences of Philadelphia
58: 123-160 [20 June 1906], 161-175, pls 5-9 [24 July 1906]
