Stenotrema monodon aliciae (H.A. Pilsbry, 1893)
Ashmunella montivaga H.A. Pilsbry, 1948
Millerelix mooreana (W.G. Binney, 1858)
Ashmunella mudgei E.P. Cheatum, 1971
Cryptomastix mullani (T.B. Bland & J.G. Cooper,1861)
Webbhelix multilineata (T. Say, 1821)
Upsilodon multiplicata A. Metcalf & D.H. Riskind,1978
Triodopsis neglecta H.A. Pilsbry, 1899
Linisia nelsoni (W.H. Dall, 1897)
Akromesodon normalis (H.A. Pilsbry, 1900)
Triodopsis obsoleta H.A. Pilsbry, 1894
Xolotrema obstrictum T. Say, 1821
Xolotrema occidentale H.A. Pilsbry & J.H. Ferriss,1907
Linisia oppilata (P.M.A. Morelet, 1849)
Fumonelix orestes (L.R. Hubricht, 1975)
Ashmunella organensis H.A. Pilsbry, 1936
Vespericola orius (S.S. Berry, 1933)
Praticolella pachyloma (K.T. Menke, 1847)
Triodopsis palliata T. Say
Polygyra paludosa (L. Pfeiffer, 1839)
Triodopsis palustris L.R. Hubricht, 1958
Patera panselenus L.R. Hubricht, 1976
Ashmunella pasonis M. Drake, 1951
Triodopsis pendula L.R. Hubricht, 1952
Daedalochila peninsulae H.A. Pilsbry, 1940
Trilobopsis penitens (G.D. Hanna & E. Rixford,1923)
Patera pennsylvanica (J. Green, 1827)
Millerelix peregrina (H.A. Rehder, 1932)
Linisia pergrandis G.A. Solem, 1959
Patera perigrapta H.A. Pilsbry, 1894
Triodopsis picea L.R. Hubricht, 1958
Vespericola pilosa (J. Henderson, 1928)
Ashmunella pilsbryana J.H. Ferriss, 1914
Stenotrema pilsbryi J.H. Ferriss, 1900
Stenotrema pilula H.A. Pilsbry, 1900