Pilsbry, H. A. & Vanatta, E. G. (1902). Papers from the Hopkins Stanford Galapagos Expedition, 1898–1899. XIII. Marine Mollusca. Proceedings of the Washington Academy of Sciences. 4: 549–560, pl. 35.
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Pilsbry, H. A. & Vanatta, E. G.
1902
Papers from the Hopkins Stanford Galapagos Expedition, 1898–1899. XIII. Marine Mollusca