Bubonias Cope, 1874 (original description)
Cyclocheila Conrad, 1874 (original description)
Dinamoeba Leidy, 1874 accepted as Mastigamoeba Schulze, 1875 (original description)
Dresseina Conrad, 1874 † accepted as Dreissena van Beneden, 1835 (original description)
Dysichthys Cope, 1874 accepted as Bunocephalus Kner, 1855 (original description)
Euneomys Coues, 1874 (original description)
Eutolype Grote, 1875 (original description)
Evotomys Coues, 1874 accepted as Myodes Pallas, 1811 (original description)
Gerrhosteus Cope, 1874 (original description)
Haplothaerus Conrad, 1874 (original description)
Homopyralis Grote, 1875 (original description)
Liosoma Conrad, 1874 (original description)
Mylitoides Conrad, 1874 † accepted as Mytiloides Brongniart in Cuvier, 1822 † (original description)
Myonomes Coues, 1874 † accepted as Microtus Schrank, 1798 (original description)
Mytiloides Conrad, 1874 accepted as Mytilopsis Conrad, 1857 (original description)
Nebela Leidy, 1875 (original description)
Ochetodon Coues, 1875 accepted as Reithrodontomys Giglioli, 1874 (original description)
Ostomya Conrad, 1874 (original description)
Ouramoeba Leidy, 1874 (original description)
Panolax Cope, 1874 † (original description)
Plectomantis Cope, 1874 (original description)
Propus Cope, 1874 (original description)
Protistius Cope, 1874 accepted as Basilichthys Girard, 1855 (original description)
Pseudolimacodes Grote, 1874 (original description)
Toxosoma Conrad, 1874 † (original description)
Vesperimus Coues, 1875 accepted as Peromyscus Gloger, 1841 (original description)