Pilsbry, H. A. & Vanatta, E. G. (1896). Catalogue of the species of Cerion, with descriptions of new forms. Proceedings of the Academy of Natural Sciences of Philadelphia. 48: 315-338, pl. 11.
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Pilsbry, H. A. & Vanatta, E. G.
1896
Catalogue of the species of <i>Cerion</i>, with descriptions of new forms.
Proceedings of the Academy of Natural Sciences of Philadelphia