Mexican lancehead rattlesnake
Plateau of central Mexico, from southern Zacatecas and northeastern Colima eastward to east-central Veracruz (McDiarmid et al., 1999).
Mexican Plateau from 1450 to 2600 m elevation (McDiarmid et al., 1999).
Types: None designated (McDiarmid et al., 1999).
Type-locality: "Table Land, Mexico." A proposed restriction to "Tupátaro, Guanajuato, Mexico" was made by Smith and Taylor (1950) (McDiarmid et al., 1999).
