1907. Sylvilagus cognatus Nelson, Proc. Biol. Soc. Washington, 20:82, July 22, type from near summit of the Manzano Mountains, Valencia County, New Mexico.
1951. Sylvilagus floridanus cognatus, Hall and Kelson, Univ. Kansas Publ., Mus. Nat. Hist., 5:55, October 1, 1951.
Marginal records (Nelson, 1909:193).—New Mexico: Santa Rosa, 35 mi. N on Conchas River; Capitan Mts.; Datil Mts.; type locality.
Sylvilagus floridanus connectens (Nelson).
1904. Lepus floridanus connectens Nelson, Proc. Biol. Soc. Washington, 17:105, May 18, type from Chichicaxtle, central Veracruz.
1909. Sylvilagus floridanus connectens, Lyon and Osgood, Bull. U. S. Nat. Mus., 62:32, January 28.
Marginal records (Nelson, 1909:186).—Tamaulipas: Altamira. Veracruz: type locality. Oaxaca: Mt. Zempoaltepec. Veracruz: Orizaba (City of); Jico. Puebla: Metlaltoyuca. Queretaro: Pinal de Amoles. San Luis Potosí: Valles.
Sylvilagus floridanus costaricensis Harris.
1933. Sylvilagus floridanus costaricensis Harris, Occas. Papers Mus. Zool., Univ. Michigan, 266:3, June 28, type from Hacienda Santa Maria, Province of Guanacaste, 3200 ft, Costa Rica.
Marginal records (Goodwin, 1946:358).—Costa Rica: El Pelón; type locality; Tenorio.