_Orthogeomys hispidus cayoensis_ (Burt, 1937). Occ. Papers Mus. Zool., Univ. Michigan, 365:1, December 16. Type from Mountain Pine Ridge, 12 mi. S El Cayo, British Honduras. _Orthogeomys hispidus chiapensis_ (Nelson and Goldman, 1929). Proc. Bio. Soc. Washington, 42:151, March 30. Type from Tenejapa, 16 mi. NE San Cristobal, Chiapas. _Orthogeomys hispidus concavas_ (Nelson and Goldman, 1929). Proc. Biol. Soc. Washington, 42:148, March 30. Type from Pinal de Amoles, Querétaro. _Orthogeomys hispidus hispidus_ (Le Conte, 1852). Proc. Acad. Nat. Sci. Philadelphia, 6:158. Type from near Jalapa, Veracruz. _Orthogeomys hispidus latirostris_ (Hall and Alvarez, 1961). Anal. Escuela Nac. Ciencias Biol., 10:121, December 20. Type from Hacienda Tamiahua, Cabo Rojo, Veracruz. _Orthogeomys hispidus negatus_ (Goodwin, 1953). Amer. Mus. Novit., 1620:1, May 4. Type from Gomez Ferias, 1300 ft., about 45 mi. S Ciudad Victoria, 10 km. W Pan American Highway, Tamaulipas. _Orthogeomys hispidus tehuantepecus_ (Goldman, 1939). Jour. Washington Acad. Sci., 29:174, April 15. Type from mountains 12 mi. NW Santo Domingo and about 60 mi. N Tehuantepec, 1600 ft., Oaxaca. _Orthogeomys hispidus torridas_ (Merriam, 1895). N. Amer. Fauna, 8:183, January 31. Type from Chichicaxtle, Veracruz. _Orthogeomys hispidus yucatanensis_ (Nelson and Goldman, 1929). Proc. Biol. Soc. Washington, 42:150, March 30. Type from Campeche, Campeche. _Orthogeomys lanius_ (Elliot, 1905). Proc. Biol. Soc. Washington, 18:235, December 9. Type from Xuchil, Veracruz. Subgenus =Macrogeomys= Merriam 1895. _Macrogeomys_ Merriam, N. Amer. Fauna, 8:185, January 31. _Type._--_Geomys heterodus_ Peters, 1865, from Costa Rica, exact locality unknown. _Chronologic range._--Known only from the Recent.