Saussure (1860) described Peromyscus aztecus from southern México. Osgood (1909) by comparison of one of Saussure's specimens with some from Mirador, Veracruz, concluded that aztecus was a subspecies of P. boylii. Dalquest (1953) incorrectly reported specimens of P. boylii from San Luis Potosà as P. b. aztecus. Merriam (1898) named Peromyscus levipes from Mt. Malinche, Tlaxcala. Thomas (1903) described from Orizaba, Veracruz, P....
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