| Acakandra austrina Loomis, 1964 | |
| Cabota crucis | |
| Cabraca unigon Shear, 1982 | Texas threetooth |
| Cavota crucis (Chamberlin, 1942) | ⇒ Cleidogona crucis Chamberlin, 1942 |
| Cleidogona accretis Shear, 1972 | Table Top talussnail |
| Cleidogona alata Causey, 1961 | Mustang talussnail |
| Cleidogona arkansana Causey, 1954 | Sonoma shoulderband |
| Cleidogona atoyaca Chamberlin, 1943 | Costate mountainsnail |
| Cleidogona atropos Shear, 1972 | Table Top talussnail |
| Cleidogona australis Loomis, 1966 | Hacheta mountainsnail |
| Cleidogona austrina Loomis, 1964 | Diablo mountainsnail |
| Cleidogona bacillipus Chamberlin &..., 1941 | |
| Cleidogona baroqua Shear, 1972 | Table Top talussnail |
| Cleidogona bifurca Loomis, 1974 | Stockton Plateau threeband |
| Cleidogona caesioannulata Wood, 1865 | Animas talussnail |
| Cleidogona camazotz Shear, 1972 | Table Top talussnail |
| Cleidogona caroliniana Causey, 1957 | Lava rock mountainsnail |
| Cleidogona ceibana Chamberlin, 1922 | |
| Cleidogona celerita Williams & H..., 1928 | Portal talussnail |
| Cleidogona chacmool Shear, 1972 | Table Top talussnail |
| Cleidogona chiapas Shear, 1982 | Texas threetooth |
| Cleidogona chisosi Loomis, 1963 | |
| Cleidogona chontala Shear, 1972 | Table Top talussnail |
| Cleidogona conotyloides Shear, 1972 | Table Top talussnail |
| Cleidogona crucis Chamberlin, 1942 | San Carlos threeband |
| Cleidogona crystallina Shear, 1972 | Table Top talussnail |
| Cleidogona curvipes Loomis, 1966 | White desertsnail |
| Cleidogona cyclipes Loomis, 1969 | Pungent talussnail |
| Cleidogona decurva Shear, 1972 | Table Top talussnail |
| Cleidogona eulalia Shear, 1982 | Texas threetooth |
| Cleidogona exaspera (Williams & H..., 1928) | ⇒ Cleidogona caesioannulata Wood, 1865 |
| Cleidogona felipiana (Shear, 1974) | ⇒ Cleidogona felipina Shear, 1974 |
| Cleidogona felipina Shear, 1974 | |
| Cleidogona fidelitor Shear, 1972 | Table Top talussnail |
| Cleidogona forceps Cook & Collins, 1895 | Big Emigrant talussnail |
| Cleidogona forficula Shear, 1972 | Table Top talussnail |
| Cleidogona fustis Cook & Collins, 1895 | Big Emigrant talussnail |
| Cleidogona georgia Shear, 1972 | Table Top talussnail |
| Cleidogona godmani Pocock, 1903 | Happy Valley talussnail |
| Cleidogona grenada Shear, 1972 | Table Top talussnail |
| Cleidogona gucumatz Shear, 1972 | Table Top talussnail |
| Cleidogona hadena Causey, 1961 | Mustang talussnail |
| Cleidogona hauatla Shear, 1972 | Table Top talussnail |
| Cleidogona hoffmani Shear, 1972 | Table Top talussnail |
| Cleidogona huebnerae Shear, 2013 | |
| Cleidogona inexpectata Hoffman, 1950 | Shasta chaparral |
| Cleidogona jamesoni Shear, 1982 | Texas threetooth |
| Cleidogona jocassee Hoffman, 1950 | Shasta chaparral |
| Cleidogona lachesis Shear, 1982 | Table Top talussnail |
| Cleidogona laminata Cook & Collins, 1895 | Big Emigrant talussnail |
| Cleidogona laquinta Shear, 1972 | Table Top talussnail |
| Cleidogona leona (Chamberlin, 1943) | ⇒ Cleidogona maculata Verhoeff, 1926 |
| Cleidogona maculata Verhoeff, 1926 | Black Mountain talussnail |
| Cleidogona major Cook & Collins, 1895 | Big Emigrant talussnail |
| Cleidogona mandeli Chamberlin, 1952 | Keys mudcloak |
| Cleidogona margarita Hoffman, 1950 | Shasta chaparral |
| Cleidogona mayapec Shear, 1972 | Table Top talussnail |
| Cleidogona medialis Shelley, 1976 | Little talussnail |
| Cleidogona mexicana Humbert & Sa..., 1869 | Golden zachrysia |
| Cleidogona michoacana | |
| Cleidogona minima Causey, 1951 | Posta Quemada talussnail |
| Cleidogona minutissima Kraus, 1954 | Chiricahua mountainsnail |
| Cleidogona mirabilis Kraus, 1954 | Chiricahua mountainsnail |
| Cleidogona mississippiana Chamberlin, 1942 | Coalinga shoulderband |
| Cleidogona mixteca Shear, 1972 | Table Top talussnail |
| Cleidogona moderata Causey, 1957 | Lava rock mountainsnail |
| Cleidogona morela | |
| Cleidogona nantahala Shear, 1972 | Table Top talussnail |
| Cleidogona nueva Chamberlin, 1941 | Deep Slide mountainsnail |
| Cleidogona nueva michoacana Chamberlin, 1941 | |
| Cleidogona nueva nueva Chamberlin, 1941 | |
| Cleidogona pecki Shear, 1972 | Table Top talussnail |
| Cleidogona punctifer Chamberlin, 1952 | Keys mudcloak |
| Cleidogona rafaela Chamberlin, 1943 | Costate mountainsnail |
| Cleidogona saripa Causey, 1961 | Mustang talussnail |
| Cleidogona sayana Bollman, 1893 | Foothill shoulderband |
| Cleidogona secreta Causey, 1957 | Lava rock mountainsnail |
| Cleidogona steno Shear, 1972 | Table Top talussnail |
| Cleidogona stolli Pocock, 1903 | Happy Valley talussnail |
| Cleidogona sublettei Causey, 1954 | Sonoma shoulderband |
| Cleidogona tajmulco Chamberlin, 1952 | |
| Cleidogona tallapoosa Shear, 1972 | Table Top talussnail |
| Cleidogona tequila Shear, 1972 | Table Top talussnail |
| Cleidogona tizoc Shear, 1972 | Table Top talussnail |
| Cleidogona totonaca Shear, 1972 | Table Top talussnail |
| Cleidogona treacyae Shear, 1982 | Texas threetooth |
| Cleidogona unita Causey, 1951 | Posta Quemada talussnail |
| Cleidogona varicornis Loomis, 1959 | |
| Cleidogona wrayi Causey, 1957 | Lava rock mountainsnail |
| Cleidogona xolotl Shear, 1972 | Table Top talussnail |
| Cleidogona yerbabuena Shear, 1982 | Texas threetooth |
| Cleidogona zapoteca Shear, 1972 | Table Top talussnail |
| Cleidogona zempoala Chamberlin, 1943 | Costate mountainsnail |
| Cleidogona zimapaniensis Causey, 1957 | Lava rock mountainsnail |
| Costaricia curvipes (Loomis, 1966) | ⇒ Cleidogona curvipes Loomis, 1966 |
| Cryptotrichus caesioannulatus (Wood, 1865) | ⇒ Cleidogona caesioannulata Wood, 1865 |
| Dearolfia lusciosa (Loomis, 1939) | ⇒ Pseudotremia lusciosa Loomis, 1939 |
| Dybasia chiriquia Loomis, 1964 | Diablo mountainsnail |
| Dybasia divergens Loomis, 1964 | Diablo mountainsnail |
| Dybasia humerosa Loomis, 1964 | |
| Dybasia interamericana Loomis, 1975 | Northwest hesperian |
| Mecistopus varicornis (Loomis, 1959) | ⇒ Cleidogona bacillipus Chamberlin &..., 1941 |
| Mexiceuma maculatum (Verhoeff, 1926) | ⇒ Cleidogona maculata Verhoeff, 1926 |
| Ogkomus divergens (Loomis, 1964) | ⇒ Dybasia divergens Loomis, 1964 |
| Ozarkogona ladymani (Causey, 1952) | ⇒ Tiganogona ladymani Causey, 1952 |
| Pseudotremia acheron Shear, 1972 | Table Top talussnail |
| Pseudotremia aeacus Shear, 1972 | Table Top talussnail |
| Pseudotremia alecto Shear, 1972 | Table Top talussnail |
| Pseudotremia amphiorax Shear, 1972 | Table Top talussnail |
| Pseudotremia armesi Shear, 1972 | Table Top talussnail |
| Pseudotremia blacki Lewis, 2000 | |
| Pseudotremia burnsorum Lewis, 2000 | |
| Pseudotremia callae Lewis, 2009 | Call's cave millipede |
| Pseudotremia carterensis Packard, 1883 | White avens |
| Pseudotremia cavernarum (Cope, 1869) | ⇒ Pseudotremia carterensis Packard, 1883 |
| Pseudotremia cavernarum carterensis (Packard, 1883) | ⇒ Pseudotremia carterensis Packard, 1883 |
| Pseudotremia cercops Shear, 1972 | Table Top talussnail |
| Pseudotremia cocytus Shear, 1972 | Table Top talussnail |
| Pseudotremia conservata Hoffman & Lewis, 1997 | Rosemont talussnail |
| Pseudotremia contorta | |
| Pseudotremia cookorum Lewis, 2000 | |
| Pseudotremia cottus (Shear, 1972) | ⇒ Pseudotremia fracta fracta Chamberlin, 1951 |
| Pseudotremia culveri | |
| Pseudotremia deprehendor Shear, 1972 | Table Top talussnail |
| Pseudotremia douglasi Lewis, 2009 | Douglas' cave millipede |
| Pseudotremia eburnea Loomis, 1939 | Santa Catalina talussnail |
| Pseudotremia fracta Hoffman, 1981 | Agua Caliente talussnail |
| Pseudotremia fracta fracta Chamberlin, 1951 | |
| Pseudotremia fracta ingens Hoffman, 1981 | |
| Pseudotremia fracta nantahala Hoffman, 1981 | |
| Pseudotremia fracta paynei Hoffman, 1981 | |
| Pseudotremia fremens | |
| Pseudotremia fulgida Loomis, 1943 | Tehama chaparral |
| Pseudotremia garlandae Lewis, 2005 | |
| Pseudotremia hansoni Chamberlin, 1951 | Anza shoulderband |
| Pseudotremia hobbsi Hoffman, 1950 | Shasta chaparral |
| Pseudotremia hoffmani Lewis, 2009 | Hoffman's cave millipede |
| Pseudotremia hubbardi | |
| Pseudotremia indianae Hoffman, 1958 | Lowe Canyon shoulderband |
| Pseudotremia johnholsingeri | |
| Pseudotremia laudermilki Lewis, 2009 | Laudermilk's cave millipede |
| Pseudotremia lethe Shear, 1972 | Table Top talussnail |
| Pseudotremia lictor Shear, 1972 | Table Top talussnail |
| Pseudotremia lusciosa Loomis, 1939 | Picacho talussnail |
| Pseudotremia manni Lewis, 2005 | |
| Pseudotremia merops Shear, 1972 | Table Top talussnail |
| Pseudotremia minos Shear, 1972 | Table Top talussnail |
| Pseudotremia momus Shear, 1972 | Table Top talussnail |
| Pseudotremia nefanda Shear, 1972 | Table Top talussnail |
| Pseudotremia nodosa Loomis, 1939 | Santa Catalina talussnail |
| Pseudotremia nyx Shear, 1972 | Table Top talussnail |
| Pseudotremia princeps Loomis, 1939 | Santa Catalina talussnail |
| Pseudotremia purselli Lewis, 2000 | |
| Pseudotremia reynoldsae Lewis, 2003 | |
| Pseudotremia rhadamanthus Shear, 1972 | Table Top talussnail |
| Pseudotremia roebuckorum Lewis, 2005 | |
| Pseudotremia ryensis | |
| Pseudotremia salisae Lewis, 2000 | |
| Pseudotremia scrutorum Shear, 1972 | Table Top talussnail |
| Pseudotremia sheari Lewis, 2009 | Shear's cave millipede |
| Pseudotremia shelleyi Lewis, 2009 | Shelley's cave millipede |
| Pseudotremia simulans Loomis, 1939 | Santa Catalina talussnail |
| Pseudotremia soco Shear, 1972 | Table Top talussnail |
| Pseudotremia sodalis (Loomis, 1939) | ⇒ Pseudotremia carterensis Packard, 1883 |
| Pseudotremia spira Shear, 1972 | Table Top talussnail |
| Pseudotremia stupefactor Shear, 1972 | Table Top talussnail |
| Pseudotremia styx Lewis, 2009 | Sinking Valley cave millipede |
| Pseudotremia sublevis Loomis, 1944 | Las Guijas talussnail |
| Pseudotremia tsuga Shear, 1972 | Table Top talussnail |
| Pseudotremia tuberculata Loomis, 1939 | Santa Catalina talussnail |
| Pseudotremia unca Shear, 1972 | Table Top talussnail |
| Pseudotremia valga Loomis, 1943 | Tehama chaparral |
| Pseudotremia wallaceae Lewis, 2005 | |
| Pseudotremia withersi Lewis, 2009 | Withers' cave millipede |
| Solaenogona chiapas Shear, 1972 | Table Top talussnail |
| Solaenogona guatemalana Hoffman, 1950 | Shasta chaparral |
| Solemia chiriquia (Loomis, 1964) | ⇒ Dybasia chiriquia Loomis, 1964 |
| Tiganogona alia Causey, 1951 | Pinaleno mountainsnail |
| Tiganogona brownae Chamberlin, 1928 | |
| Tiganogona conifer Cook & Collins, 1895 | Superstition Mountain talussnail |
| Tiganogona glebosa Causey, 1951 | Pinaleno mountainsnail |
| Tiganogona ladymani Causey, 1952 | Dona Ana talussnail |
| Tiganogona levis Causey, 1959 | Tortolita talussnail |
| Tiganogona moesta Causey, 1951 | Pinaleno mountainsnail |
| Tiganogona steuartae Causey, 1951 | Pinaleno mountainsnail |
