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Pilsbry, H. A. (1924). South American land and fresh-water mollusks: Notes and descriptions. Proceedings of the Academy of Natural Sciences of Philadelphia. 76: 49-66, pl. 4.
Pilsbry, H. A. (1924). South American land and fresh-water mollusks: Notes and descriptions. Proceedings of the Academy of Natural Sciences of Philadelphia. 76: 49-66, pl. 4.
