Haldeman, S. S. (1841). Descriptions of two new freshwater shells. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 1(6): 78-79., available online athttps://www.biodiversitylibrary.org/page/1779180 page(s): 78 [details]
original descriptionHaldeman, S. S. (1841). Descriptions of two new freshwater shells. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 1(6): 78-79., available online athttps://www.biodiversitylibrary.org/page/1779180 page(s): 78 [details]