FIELD BOOK OF MAMMALS 



San Emigdio Creek, in south v/estem Kern County. Alti- 

 tudinal range, 175 to 600 feet. Life-zone, Lower Sonoran." 

 (Grinnell) 



Ordii Group 



Ord Kangaroo Rat.' — Dipodomys ordii ordii Woodhouse. 



Size medium; five toes present; tail medium; upperparts 

 deep ochraceous buff, sprinkled lightly with black; black 

 markings not very extensive. Total length, 9.6 inches; 

 tail vertebras, 5.4 inches; hind foot, 1.5 inches. Found 

 from Texas north through Arizona and New Mexico. 



Columbian Kangaroo Rat. — Dipodomys ordii columhianus 

 (Merriam). Plate XXVL 

 Size small; five toes present; face broad; ears blackish; 

 blackish facial markings present; general coloration cinna- 

 mon-buff; tail relatively short; plantar stripe gray; con- 

 spicuous white spot over eye and at posterior base of ear. 

 Total length, 9.3 inches; tail vertebras, 5.2 inches; hind 

 foot, 1.5 inches. Found in "the northern portion of the 

 Great Basin area of the western United States, and might 

 be expected to occur generally over the lower sagebrush 

 levels in the elevated northeastern comer of California. . . . 

 Life-zone, Upper Sonoran." (Grinnell) 



Mono Kangaroo Rat. — Dipodomys ordii monoensis (Grinnell). 

 Resembling columhianus but paler; dark markings restricted, 

 white extensive; lateral white tail stripes as broad as dorsal 

 dark stripe. Upperparts pinkish buff. Total length, 9.3 

 inches; tail vertebra, 5 inches; hind foot, 1.35 inches. 

 Found in "The sagebrush fiats at the extreme head of 

 Owens Valley. Altitudinal range, 5300-5640 feet. Life- 

 zone, Upper Sonoran." (Grinnell) 



Utah Kangaroo Rat.^ — Dipodomys ordii utahensis (Merriam). 

 Resembling montanus but hind foot smaller and coloration 

 more drab. Upperparts near clay color. Total length, 

 10.4 inches; tail vertebrae, 5.9 inches; hind foot, 1.6 inches. 

 Found in Weber County, Utah. 



Chapman Kangaroo Rat. — Dipodomys ordii chapmani 

 (Mearns). 

 Upperparts cinnamon-buff; sides clearer and brighter; 

 plantar stripe well developed. Total length, 10.2 inches; 

 tail vertebras, 5.5 inches; hind foot, 1.44 inches. Found in 

 Yavapai County, Arizona. 



Mountain Kangaroo Rat. — Dipodomys ordii montanus (Baird). 

 Upperparts dull buffy ochraceous, sprinkled with black; 

 large white spot back of ear; dark tail stripes blackish. 

 Total length, 9.8 inches; tail vertebras, 5.5 inches; hind 

 foot, 1.6 inches. Found in Costilla County, Colorado. 



Painted Desert Kangaroo 'Rat.— Dipodomys ordii longipes 

 (Merriam). 



Upperparts bright ochraceous buff, finely sprinkled with 

 black. Total length, 10.8 inches; tail vertebrae, 6.5 inches; 



322 



