original description
Baker, F. C. (1928). The Mollusca of Chautauqua Lake, New York, with descriptions of a new variety of <i>Ptychobranchus</i> and of <i>Helisoma</i>. <em>The Nautilus.</em> 42(2): 48-60., available online at http://biodiversitylibrary.org/page/8518825
page(s): 52 [details]
From editor or global species database
Type locality "Remus Point, Griffith Landing, Celeron" [Chatauga Lake, New York] [details]