MolluscaBase name details
original description
(of Helix labyrinthica Say, 1817) Say, T. (1817). Descriptions of new species of land and fresh water shells of the United States. <em>Journal of the Academy of Natural Sciences of Philadelphia.</em> 1 (6): 123-126., available online at https://www.biodiversitylibrary.org/page/24680373
page(s): 124 [details]
new combination reference
Morse, E. S. (1864). Observations on the terrestrial Pulmonifera of Maine, including a catalogue of all the species of terrestrial and fluviatile Mollusca known to inhabit the state. <em>Journal of the Portland Society of Natural History.</em> 1(1): 1-63, pls 1-10., available online at https://www.biodiversitylibrary.org/page/16070837
page(s): 26, fig. 64 [details]