Pilsbry, H. A. & Vanatta, E. G. (1898). Materials towards a natural classification of the cylindrelloid snails. Proceedings of the Academy of Natural Sciences of Philadelphia. 50: 264-286, pls 17-18.
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Pilsbry, H. A. & Vanatta, E. G.
1898
Materials towards a natural classification of the cylindrelloid snails.
Proceedings of the Academy of Natural Sciences of Philadelphia