basis of recordInvertEBase. (2018). Authority files of U.S. and Canadian land and freshwater mollusks developed for the InvertEBase (InvertEBase.org) project. [details]
additional sourcePilsbry, H. A. (1891). On <i>Helix harfordiana</i> Cooper, and other shells. <em>The Nautilus.</em> 5(4): 39-42, pl. 2., available online athttps://www.biodiversitylibrary.org/page/42788782 page(s): 39, pl. 2, fig. 3 [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Etymology Named for the collector, Mr. G. H. Ragsdale (18**-19**) of Gainesville, Texas. [details] Type locality Texas [details]