MolluscaBase taxon details
original description
(of Helminthoglypta umbilicata cayucosensis Pilsbry, 1925) Pilsbry, H. A. (1925). <i>Helminthoglypta umbilicata cayucosensis</i>. <em>The Nautilus.</em> 38(3): 104-105., available online at https://www.biodiversitylibrary.org/page/8525085 page(s): 104 [details]
original description
(of Helminthoglypta umbilicata lioderma Pilsbry, 1939) Pilsbry, H. A. (1939). Land Mollusca of North America (north of Mexico). Volume I Part 1. <em>The Academy of Natural Sciences of Philadelphia Monographs.</em> 3: i-xvii, 1-573, i-ix. Philadelphia [6 December]. page(s): 132 [details] Available for editors [request]
original description
(of Epiphragmophora dupetithouarsi cuestana Edson, 1912) Edson, H. (1912). Two new shells from California. <em>The Nautilus.</em> 26(4): 37., available online at https://www.biodiversitylibrary.org/page/1738240 page(s): 37 [details]
original description
(of Epiphragmophora tudiculata var. umbilicata Pilsbry, 1898) Pilsbry, H. A. (1898). Notices of new species and varieties of American land shells. <em>The Nautilus.</em> 12(2): 22-23., available online at https://www.biodiversitylibrary.org/page/1746653 page(s): 22 [details]
original description
(of Helix dupetithouarsi var. concursus Pilsbry, 1924) Pilsbry, H. A. (1924). Californian helices. <em>The Nautilus.</em> 38(2): 54-55., available online at https://www.biodiversitylibrary.org/page/8525035 page(s): 55 [details]
basis of record
InvertEBase. (2018). Authority files of U.S. and Canadian land and freshwater mollusks developed for the InvertEBase (InvertEBase.org) project. [details]
additional source
Webb, G. R. (1941). A comparison of young <i>Helminthoglypta umbilicata</i> and <i>H. dupetithouarsi</i>. <em>The Nautilus.</em> 54(4): 122-125., available online at https://www.biodiversitylibrary.org/page/8519281 [details]
additional source
Webb, G. R. (1942). An abnormal landsnail. <em>The Nautilus.</em> 55(3): 107., available online at https://www.biodiversitylibrary.org/page/8520016 [details]
additional source
Webb, G. R. (1964). Courtship between two species of <i>Helminthoglypta</i>. <em>The Nautilus.</em> 78(1): 30-31., available online at https://www.biodiversitylibrary.org/page/8521325 [details]
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