Muridae Illiger, 1815
Sigmodon alleni V. Bailey, 1902
Sigmodon alstoni (Thomas, 1881)
Sigmodon arizonae Mearns, 1890
Sigmodon atavus
Sigmodon bakeri
Sigmodon curtisi
Sigmodon fulviventer J. A. Allen, 1889
Sigmodon hirsutus Burmeister, 1854
Sigmodon hispidus Say & Ord, 1825
Sigmodon hudspethensis
Sigmodon inopinatus Anthony, 1924
Sigmodon leucotis V. Bailey, 1902
Sigmodon libitinus
Sigmodon lindsayi
Sigmodon mascotensis J. A. Allen, 1897
Sigmodon minor
Sigmodon ochrognathus V. Bailey, 1902
Sigmodon peruanus J. A. Allen, 1897
Sigmodon planifrons Nelson & Goldman, 1933
Sigmodon toltecus Saussure, 1860
Sigmodon zanjonensis Goodwin, 1932
