additional sourcePilsbry, H. A. (1930). Results of the Pinchot South Sea Expedition - I. Land mollusks of the Caribbean Islands, Grand Cayman, Swan, Old Providence and St. Andrew. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 82: 221-261, pls 15-19. Philadelphia. page(s): 257; note: Unidentified, worn specimens listed. [details] Available for editors [request]