Pilsbry, H. A. & Vanatta, E. G. (1896). Revision of the North American slugs: Ariolimax and Aphallarion. Proceedings of the Academy of Natural Sciences of Philadelphia. 48 (2): 339-350, plates 12-14.
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Pilsbry, H. A. & Vanatta, E. G.
1896
Revision of the North American slugs: <i>Ariolimax</i> and <i>Aphallarion</i>
Proceedings of the Academy of Natural Sciences of Philadelphia