346 DIPODOMYS. 
Fic. XLVIII. DIPODOMYS MERRIAMI. 
MERRIAM'S KANGAROO RAT. 
MerrRIAM’s KANGAROO Rat. 
Type locality. New River, between Phoenix and Prescott, Arizona. 
Geogr. Distr. States of Sonora and Chihuahua, Mexico, north 
into Arizona. 
Genl. Char. Limbs and tail slender, latter longer than head and 
body; skull small. 
Color. Above mouse gray, tinged with pinkish buff; sides sandy; 
nose and sides of face black nearly to eyes; aural spot and under 
parts white; tail drab gray, white band on each side not reaching 
extremity. 
Measurements. Total length, 281; tail vertebre, 149; hind foot, 
36. Skull: total length, 37; Hensel, 22; zygomatic width, 17; inter- 
orbital constriction, 13; mastoid width, 23; length of nasals, 14; 
length of upper molar series, 4; length of mandible, 18.5. 
a.—ambisuus (Dipodomys), Merr., N. Am. Faun., No. 4, 1890, 
p. 42. Elliot, Syn. N. Am. Mamm., 1gor, p. 234. 
DouBTFUL KANGAROO Rat. 
Type locality. El Paso, El Paso County, Texas. 
Geogr. Distr. State of Chihuahua, Mexico, north to north- 
western Texas. 
Genl. Char. Tail one-third longer than head and body; size me- 
dium; body slender. 
Color. Above buffy drab; sides tinged with pale buff, and lined 
everywhere with black; beneath white; upper and lower tail stripes 
dusky to tip; lateral white stripes terminating with the vertebre. 
Measurements. Total length, 233; tail vertebrae, 133; hind 
foot, 37sueer, 7. 
b.—parvus (Dipodomys), Rhoads, Am. Nat., xxvii, 1894, p. 70. 
Elliot, Syn. N. Am. Mamm., 1901, p. 234. 
SMALL KANGAROO Rat. 
Type locality. San Bernardino, San Bernardino County, California. 
