A. A.  Gould, ?Descriptions of shells from the Gulf of California and the Pacific Coasts of Mexico and California?, Boston Journal of Natural History, vol. 6, pp. 374-407, 1853.

A. A.  Gould, ?Descriptions of shells from the Gulf of California and the Pacific Coasts of Mexico and California?, Boston Journal of Natural History, vol. 6, pp. 374-407, 1853.