Type loca lity . 
I 
Geogr aphical range .— Southern portions of Texas, New Mexico, 
c 
and Arizona, southward into Mexico. Its vertical range extends 
from the Tamaulipan Tropical Zone, through the Sonoran and Transi¬ 
tion zones, ending in the lower edge of the Alpine Boreal Zone. 
Description.— Size large; form stout, especially as to the 
feet and claws; ears short; Bnout strongly produced, naked above; 
» 
nostrils inferior; tail only moderately bushy. Dental formula: 
i | , c i , pm | , m i ; total, 32. Color of limbs and under 
parts all black but the tail; upper surface all white but the head; 
tail all white; head without the narrow longitudinal stripe of 
Mephitis, the white area of the upper surface beginning in an 
obtuse point a short distance behind the line of the orbits and 
extending backward over the whole upper surface of the body ana all 
of the tail; inner surface of ear, white. The dimensions are shown 
by the accompanying table of measurements. 
Cranial and d ent al chara cters.— Skull massive (Big- )» 
swollen in the frontal region, and constricted postorbitally, with 
the nasal aperture directed superiorly. In young specimens a 
minute and functionless additional premolar is not infrequently 
found, giving it the same dental formula as Mephitis and Sjoilxgaae. 
