Mayaxis fortis (E.C. Von Martens, 1898)
Streptostyla fulvida J.C.H. Crosse& P.H. Fischer, 1869
Rectaxis funibus (C. Goodrich& H. Van Der Schalie, 1937)
Versutaxis futilis (H.B. Baker, 1939)
Streptostyla gabbi H.A. Pilsbry, 1907
Euglandina ghiesbreghti (L. Pfeiffer, 1856)
Euglandina gigantea H.A. Pilsbry, 1926
Streptostyla glandiformis J.C.H. Crosse& P.H. Fischer, 1869
Streptostyla gracilis (H.A. Pilsbry, 1909)
Rectaxis granum (H.B. Baker, 1939)
Salasiella guadalajarensis H.A. Pilsbry& T.D.A. Cockerell, 1926
Euglandina haasi F.G. Thompson, 1982
Varicoturris hadra F.G. Thompson, 2009
Spiraxis haughtoni (W.H. Benson, 1863)
Euglandina hererrae (J.A. Contreras, 1923)
Salasiella hinkleyi H.A. Pilsbry, 1919
Varicoturris huehuetenangoensis (F.G. Thompson, 1995)
Euglandina huingensis (H.A. Pilsbry, 1903)
Myxastyla hyalina F.G. Thompson, 1995
Euglandina immemorata H.A. Pilsbry, 1907
Euglandina indusiata (L. Pfeiffer, 1860)
Euglandina insignis (L. Pfeiffer, 1855)
Pseudosubulina insularis H.A. Pilsbry
Rectaxis intermedius (H. Strebel, 1882)
Spiraxis inusitatus (C.B. Adams, 1849)
Euglandina irakita J.A. Jardim, D. Abbate& L.R.L. Simone, 2013
Pseudosubulina iridescens H.F. Ramsden & C. de la Torre,
Pseudosubulina irregularis H.A. Pilsbry, 1907
Streptostyla irrigua (R.J. Shuttleworth, 1852)
Laeviglandina izabellina (L. Pfeiffer, 1846)
Euglandina jacksoni H.A. Pilsbry & E.G. Vanatta,1936
Streptostyla jacobsoni H.A. Pilsbry, 1951
Eustreptostyla jilitlana (W.H. Dall, 1908)
Salasiella joaquinae (H. Strebel, 1877)
Guillarmodia kingi (F.G. Thompson, 1995)