original description
Bland, T. (1860). Remarks on certain species of North American Helicidae. <em>Annals of the Lyceum of Natural History of New York.</em> 7: 115-142, plate 4., available online at https://www.biodiversitylibrary.org/page/16227568
page(s): 117-118, pl. 4, figs. 3-4 [details]
basis of record
InvertEBase. (2018). Authority files of U.S. and Canadian land and freshwater mollusks developed for the InvertEBase (InvertEBase.org) project. [details]
additional source
Pilsbry, H. A. (1890). <i>Helix introferens</i> Bland. <em>The Nautilus.</em> 4(1): 12., available online at https://www.biodiversitylibrary.org/page/12596594 [details]
From editor or global species database
Type locality Gaston County, North Carolina [details]