Vespericola scotti P.A. Cordero& W.B. Miller, 1995
Polygyra septemvolva T. Say, 1818 Florida13 mm
Polygyra septemvolva volvoxis L. Pfeiffer, 1846 Texas. Fort Bend County8,1 mm
Vespericola shasta (S.S. Berry, 1921) USA, California
Vespericola sierranus (S.S. Berry, 1921) Oregon
Stenotrema simile F.W. Grimm, 1971
Millerelix simpsoni (H.A. Pilsbry& J.H. Ferriss, 1907)
Inflectarius smithi (W.F. Clapp, 1905) Alabama
Triodopsis soelneri J. Henderson, 1907 USA, North Carolina
Neohelix solemi K.C. Emberton, 1988
Stenotrema spinosum H.C. Lea, 1830 Tennessee12 mm
Ashmunella sprouli W. Fullington & W. Fullington,
Stenotrema stenotrema L. Pfeiffer, 1842 Alabama, Madison County8,8 mm
Upsilodon sterni A. Metcalf& D.H. Riskind, 1978 Mexico, Saltillo
Praticolella strebeliana H.A. Pilsbry, 1899 Mexico, Nuevo León
Daedalochila subclausa H.A. Pilsbry, 1899
Inflectarius subpalliatus (H.A. Pilsbry, 1893) Tennessee
Triodopsis subpersonatum (A.T. von Middendorff,1851)
Linisia suprazonata (H.A. Pilsbry, 1899) Mexico, Michoacan
Praticolella taeniata H.A. Pilsbry, 1940 Mexico, Nuevo León
Linisia tamaulipasensis (H.C. Lea, 1857) Tamaulipas, Mexico
Trilobopsis tehamana (H.A. Pilsbry, 1928)
Triodopsis tennesseensis B. Walker & H.A. Pilsbry,1902 Alabama
Ashmunella tetrodon H.A. Pilsbry& J.H. Ferriss, 1915 New Mexico, Socorro County
Linisia texasiana (S. Moricand, 1833) Texas8 mm
Polygyra tholus W.G. Binney, 1857 USA, Texas
Ashmunella thompsoniana (C.M.F. Ancey, 1887)
Mesodon thyroidus (T. Say, 1816) Kansas, Wichita County22 mm
Mesodon thyroidus bucculentus (A.A. Gould, 1848) Texas22,6 mm
Ashmunella todseni A. Metcalf & R. Smartt,1977
Ashmunella townsendi P. Bartsch, 1904
Allogona townsendiana (H.C. Lea, 1838) Washington, Kitsap County30 mm
Trilobopsis trachypepla (S.S. Berry, 1933) USA. Virginia
Erectidens trichalis H.A. Pilsbry, 1953 Mexico, Nuevo León
Triodopsis tridentata (T. Say, 1816) Tennessee17,6 mm