MolluscaBase taxon details
original description
(of Helix ariadnae L. Pfeiffer, 1849) Pfeiffer, L. (1849). Nachträge zu L. Pfeiffer Monographia Helicearum [sic!] viventium (Fortsetzung). Zeitschrift für Malakozoologie, 5 [1848] (8): 113-123. Cassel [March]., available online at https://www.biodiversitylibrary.org/page/16292307
page(s): 120 [details]
original description
(of Helix (Polygyra) couchiana I. Lea, 1857) Lea, I. (1857). Description of six new species of fresh water and land shells of Texas and Tamaulipas, from the collection of the Smithsonian Institution. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 9: 101-102 [after 28 April 1857; possibly published in 1858]., available online at http://biodiversitylibrary.org/page/6330365
page(s): 102 [details]
basis of record
Thompson, F. G. (2011). An annotated checklist and bibliography of the land and freshwater snails of México and Central America. <em>Florida Museum of Natural History Bulletin.</em> 50(1): 1-299. [details] Available for editors [request]