basis of recordGuppy, R. J. L. (1866). On the terrestrial and fluviatile Mollusca of Trinidad. <em>Annals and Magazine of Natural History, series 3.</em> 17: 42-56., available online athttps://www.biodiversitylibrary.org/page/16057071 page(s): 44 [details]
additional sourceGuppy, R. J. L. (1866). Catalogue of the land and freshwater Mollusca of Trinidad. <em>Proceedings of the Scientific Association of Trinidad.</em> 1(1): 10-35., available online athttps://www.biodiversitylibrary.org/page/54074897 page(s): 33 [details]
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