Hartman, W. D. (1890). Description of new species of shells. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 42: 284-290., available online athttps://www.biodiversitylibrary.org/page/6390090 page(s): 286 [details]
original descriptionHartman, W. D. (1890). Description of new species of shells. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 42: 284-290., available online athttps://www.biodiversitylibrary.org/page/6390090 page(s): 286 [details]
additional sourcePilsbry, H. A. & Gulick, A. (1902). List of land Mollusca from the neighborhood of Sapporo, Yesso. <em>The Nautilus.</em> 16(6): 68-69., available online athttps://www.biodiversitylibrary.org/page/1754341 page(s): 69 [details]
Present Inaccurate Introduced: alien Containing type locality
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