OCCURRENCE.


GENERAL DISTRIBUTION.

_Dipodomys spectabilis spectabilis_ is found in southeastern Arizona, in
northwestern, central, and southern New Mexico, in extreme western
Texas, in northern Sonora, and in northern and central Chihuahua (Fig.
1). A subspecies, _D. s. cratodon_ Merriam, has been described from
Chicalote, Aguas Calientes, Mexico, the geographic range of which lies
in central Mexico in portions of the States of Zacatecas, San Luis
Potosi, and Aguas Calientes.


HABITAT.

In the Tucson region _spectabilis_ is typically a resident of the Lower
Sonoran Zone. This is perhaps the principal zone inhabited over its
entire range, but the animal is often found in the Upper Sonoran also,
and in the Gallina Mountains of New Mexico Hollister found it invading
the yellow pine Transition where the soil was dry and sandy and the pine
woods of open character. The same observer found it common in grassy and
weed-grown parks among the large junipers, pinyons, and scattering
yellow pines of the Bear Spring Mountains, N. Mex. Bailey calls
attention to the fact that the animal apparently does not inhabit the
lower half of the Lower Sonoran Zone, as it extends neither into the Rio
Grande Valley of Texas nor the Gila Valley of Arizona. In extreme