Spiraxis mirabilis (C.B. Adams, 1849)
Miraradula miradorensis (H. Strebel, 1882)
Mayaxis mitescens (E.C. Von Martens, 1898)
Chersomitra mitraeformis (R.J. Shuttleworth, 1852)
Proameria mitriformis (G.F. Angas, 1879)
Perpusilla modesta (L. Pfeiffer, 1862)
Streptostyla mohriana (L. Pfeiffer, 1862)
Varicoglandina monilifera (P.M.A. Morelet, 1849)
Varicoglandina monilifera rubella (P.M.A. Morelet, 1849)
Spiraxis moreletianus L. Pfeiffer, 1866
Guillarmodia multispira (L. Pfeiffer, 1861)
Varicoglandina nana (R.J. Shuttleworth, 1852)
Streptostyla nebulosa W.H. Dall, 1896
Guillarmodia nelsoni (P. Bartsch, 1909)
Eustreptostyla nicoleti (R.J. Shuttleworth, 1852)
Streptostyla nigricans (L. Pfeiffer, 1845)
Volutaxis nitidus H. Strebel, 1882
Pseudosubulina nouraguensis O. Gargominy & I.V. Muratov,2012
Streptostyla novoleonis H.A. Pilsbry, 1899
Streptostyla obesa E.C. Von Martens, 1891
Streptostyla oblonga (L. Pfeiffer, 1856)
Laeviglandina obtusa (L. Pfeiffer, 1844)
Versutaxis odiosus (H.A. Pilsbry, 1899)
Volutaxis opeas (H.B. Baker, 1939)
Proameria orizabae (L. Pfeiffer, 1856)
Pseudosubulina orizabensis H.A. Pilsbry, 1907
Rectaxis pagodus F.G. Thompson, 2010
Streptostyla palmeri W.H. Dall, 1905
Euglandina pan (F.D. Thompson, 1897)
Pseudosubulina parva (H.B. Baker, 1939)
Spiraxis parvulus E. Chitty, 1853
Versutaxis patzcuarensis (H.A. Pilsbry, 1899)
Rectaxis paulisculpta (H.A. Rehder, 1942)
Spiraxis permira C.M.F. Ancey, 1904
Salasiella perpusilla (L. Pfeiffer, 1880)