The Perote deermouse has tawny upperparts, a pale underside, and a tail longer than its head and body. It is recorded in a highland basin of central Mexico.
The back is tawny and darker along the middle, the sides of the head are grey, and the underside is creamy white. The tail is longer than the head and body together.
In the Oriental Basin, it occupies flat areas of fine sandy soil with grasses and scattered junipers or yuccas.
The ears are longer than the hind feet, and the auditory bullae at the base of the skull are enlarged.
The long tail is strongly bicoloured and covered with hair.
An extinction-risk assessment has not been added yet.