KANGAROO RAT 



San Bernardino Kangaroo Rat. — Dipodomys merriami parvus 

 (Rhoads). 

 Slightly smaller than typical merriami; coloration grayer; 

 pelage less silky; black markings on face and tail better de- 

 veloped. Total length, 9.3 inches; tail vertebrce, 5.4 inches; 

 hind foot, 1.44 inches. Found in "The San Bernardino 

 and San Jacinto valleys, on the Pacific slope of southern 

 California in San Bernardino and Riverside counties. 

 Northernmost station, Cajon Wash; southernmost, Valle- 

 vista. Altitudinal range, 1000 to 1800 feet. Life-zone, 

 Lower Sonoran." (Grinnell) 



Allied Kangaroo Rat. — Dipodomys merriami simiolus 

 (Rhoads). 

 Closely resembling typical merriami, but slightly smaller 

 and paler. Total length, 9.6 inches; tail vertebras, 5.8 

 inches; hind foot, 1.5 inches. Found in "the Colorado 

 Desert. Ranges northwest as far as Cabezon, in San 

 Gorgonio Pass; west as far as La Puerta and Vallecito, in 

 eastern San Diego County; north, along the Colorado River 

 nearly to the vicinity of Palo Verde; east to the Colorado 

 River, and beyond in the vicinity of Yuma; south across the 

 Mexican line, Altitudinal range, 180 to 3500 feet. Life- 

 zone, Lower Sonoran." (Grinnell) 



Tipton Kangaroo Rat. — Dipodomys nitratoides nitratoides 

 (Merriam). Plate XX VL 

 Smaller than typical merriami; pelage coarser ; less ochrace- 

 ous on dorsal area; dark facial markings blacker; dark tail 

 stripes broader and blacker. Total length, 9.3 inches; tail 

 vertebrse, 5.6 inches; hind foot, 1.4 inches. Found on 

 "The floor of the southeastern (upper) side and end of the 

 San Joaquin Valley, from Tipton, Tulare County, south to 

 Caliente Wash, Kern County, and west to north side of 

 Buena Vista Lake. Altitudinal range, 250 to 600 feet. 

 Life-zone, Lower Sonoran." (Grinnell) 



Fresno Kangaroo Rat. — Dipodomys nitratoides exilis (Mer- 

 riam). 

 Smaller than typical nitratoides but similar to it in general 

 characters; darker in color; upperparts snuff-brown; more 

 dusky on face. Total length, 8.6 inches; tail vertebrce, 5.1 

 inches; hind foot, 1.32 inches. Found in "So far as now 

 known, only a small portion of the east side of the San 

 Joaquin Valley north of Tulare Lake, in the immediate 

 vicinity of Fresno. Altitude of Fresno district, about 300 

 feet. Life-zone, Lower Sonoran." (Grinnell) 



Short-nosed Kangaroo Rat. — Dipodomys nitratoides brevinasus 

 (Grinnell). 

 Slightly paler and more ochraceous than typical nitratoides. 

 Total length, 9.5 inches; tail vertebras, 5.4 inches; hind foot, 

 1.4 inches. Found on "The floor of the west side of the 

 San Joaquin Valley, from near the mouth of Panoche 

 Creek, in western Fresno County, south to near mouth of 



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