(ofAncylus ovalis E. S. Morse, 1864)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 athttps://www.biodiversitylibrary.org/page/16070837 page(s): 44, figs. 101-102 [details]
original description(ofAncylus ovalis E. S. Morse, 1864)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 athttps://www.biodiversitylibrary.org/page/16070837 page(s): 44, figs. 101-102 [details]