Allogona profunda (Say, 1821) | 
Allogona ptychophora (A.D. Brown, 1870) | 
Allogona townsendiana (Lea, 1838) |
Ashmunella rhyssa (Dall, 1897) | 
Cryptomastix devia (Gould, 1846) | 
Cryptomastix hendersoni (Pilsbry, 1928) |
Cryptomastix mullani hemphilli Binney, 1886 | 
Cryptomastix mullani latilabris Pilsbry, 1940 | 
Cryptomastix mullani mullani (Bland & Cooper, 1861) |
Cryptomastix mullani olneyae (Pilsbry, 1891) | 
Daedalochila auriculata (Say, 1818) | 
Daedalochila dorfeuilliana (Lea, 1838) |
Daedalochila hausmani (Jackson, 1948) | 
Daedalochila peregrina (Rehder, 1932) | 
Euchemotrema hubrichtii Pilsbry, 1940 |
Euchemotrema leai (A. Binney, 1841) | 
Inflectarius inflectus (Say, 1821) | 
Inflectarius rugeli (Shutleworth, 1852) |
Lobosculum pustuloides (Bland, 1858) | 
Mesodon appressus (Say, 1821) | 
Mesodon elevatus (Say, 1821) |
Mesodon perigraptus Pilsbry, 1894 | 
Mesodon thyroidus (Say, 1817) | 
Mesodon thyroidus bucculentus (A. Gould, 1848) |
Mesodon zelatus (A.Binney, 1837) | 
Neohelix albolabris (Say, 1816) | 
Neohelix alleni (Wetherby, 1883) |
Patera appressa (Say, 1821) | 
Patera binneyana (Pilsbry, 1899) | 
Patera clenchi (Rehder, 1932) |
Patera laevior (Hubricht, 1968) | 
Polygyra avara Say, 1818 | 
Polygyrella polygyrella (Bland & J.G.Cooper, 1861) |
Stenotrema angellum Hubricht, 1958 | 
Stenotrema cavum (Pilsbry & Vanatta, 1911) | 
Stenotrema exodon (Pilsbry, 1893) |
Stenotrema labrosum (Bland, 1862) | 
Stenotrema pilsbryi (Ferriss, 1900) | 
Stenotrema spinosum (Lea, 1830) |
Stenotrema uniferum (Pilsbry, 1900) | 
Triodopsis caroliniensis (Lea, 1834) | 
Triodopsis discoidea (Pilsbry, 1894) |
Triodopsis hopetonensis (Shuttleworth, 1852) | 
Vespericola columbiana (Lea, 1838) | 
Webbhelix multilineata (Say, 1821) |
Xolotrema caroliniense (Lea, 1831) | 
Xolotrema fosteri (F.C.Baker, 1921) | 
Xolotrema obstrictum (Say, 1821) |
Xolotrema occidentale (Pilsbry & Ferris, 1907) | | |
