FAMILIA POLYGYRIDAE
Allogona profunda (Say,1821)
Patera roemeri (Pfeiffer,1848)
Allogona townsendiana (Lea,1838) 1 | 2 | 3
Polygyra cereolus cereolus (Mühlfeld,1818)
Cryptomastix germana (Gould,1851)
Polygyra cereolus septemvolva (Say,1818)
Daedalochila auriculata (Say,1818) 1 | 2
Polygyra leporina (Gould,1849)
Daedalochila avara (Say,1818)
Polygyra plana (Dunker,1843)
Daedalochila cf. peregrina (Rehder,1932)
Praticolella berlandieriana (Moricand,1833)
Daedalochila cf. plicata (Say,1821)
Praticotella griseola (Pfeiffer,1841) 1 | 2 | 3
Daedalochila dorfeuilliana (Lea,1838)
Praticolella mobiliana (Lea,1841)
Daedalochila hausmani (Jackson,1948)
Stenotrema barbatum (Clapp,1904)

Daedalochila mooreana (Binney,1857)

Stenotrema deceptum (Clapp,1905)
Daedalochila peregrina (Rehder,1932)
Stenotrema exodon (Pilsbry,1900)
Euchemotrema hubrichti (Pilsbry,1940)
Stenotrema hirsutum (Say,1817)
Euchemotrema leai (Binney,1841)
Stenotrema labrosum (Bland,1862)
Inflectarius cf. smithi (Clapp,1905)
Stenotrema pilsbry (Ferriss,1900)
Inflectarius inflectus (Say,1821)
Stenotrema spinosum (Lea,1830)
Inflectarius rugeli (Shuttleworth,1852)
Stenotrema unciferum (Pilsbry,1900)
Linixa texasiana (Moricand,1833)
Triodopsis cf. vultuosa (Gould,1848)
Mesodon adrewsae (Binney,1879)
Triodopsis discoidea (Pilsbry,1904)
Mesodon chilhoweensis (Lewis,1870)
Triodopsis hopetonensis (Shuttleworth,1852)
Mesodon clausus (Say,1821)
Triodopsis neglecta (Pilsbry,1899)
Mesodon elevatus (Say,1821)
Triodopsis vulgata (Pilsbry,1940)

Mesodon thyroidus (Say,1816) 1 | 2 | 3 | 4

Vespericola armigera (Ancey,1881)
Mesodon zelatus (Binney,1837)
Vespericola columbiana pilosa (Henderson,1928)
Patera appressa (Say,1821)
Vespericola megasoma (Pilsbry,1928)
Patera cf. perigrapta (Pilsbry,1894)
Webbhelix multilineata (Say,1824)
Patera clenchi (Rehder,1932)
Xolotrema fosteri (Baker,1932)
Patera laevior (Hubricht,1968)
Xolotrema occidentalis (Pilsbry & Ferriss,1907)

Patera perigrapta (Pilsbry,1894)