FIELD BOOK OF MAMMALS 



vertebras, 4 inches; hind foot, 5.4 inches; ear from notch, 

 4.5 inches. Found in "Northeastern Cahfomia, north- 

 western Nevada, and north through eastern Oregon and 

 eastern Washington. Vertical range from about 1,000 feet 

 in eastern Washington to 6,000 feet in northeastern Cah- 

 fomia; zonal range mainly Upper Sonoran extending into 

 lower part of Transition Zone." (Nelson) 



San Joaquin Valley Jack Rabbit. — Lepus californicus richard- 

 soni (Bachman). 

 Smaller than typical californicus. Total_ length, 22-23 

 inches; tail vertebrae, 4 inches; hind foot, 5 inches; ear from 

 notch, 4.5 inches. Paler than typical californicus, color 

 above grayish buff to sandy buff. Found in "San Joaquin 

 Valley, California, and adjacent arid valleys to the west and 

 surrounding foothills. Vertical range from below 500 feet 

 in Salinas Valley up to 4,000 feet in mountains about San 

 Joaquin Valley; zonal range mainly Lower Sonoran, extend- 

 ing up through Upper Sonoran." (Nelson) 



San Diego Jack Rabbit. — Lepus californicus hennetti (Gray). 

 Smaller and paler than typical californicus. Total length, 

 22 inches; tail vertebrae, 3.4 inches; hind foot, 5 inches; ear 

 from notch, 4.5 inches. Color above, pinkish buff washed 

 with black ; black ear- tip smaller than in typical californicus 

 and less contrast between color of tops of fore- and hind feet 

 and color of upper legs. Found in "Southern California 

 west of summit of Coast Range from near Gaviota Pass to 

 Mexican border and south. . . . Vertical range from sea 

 level at San Diego up to about 6,000 feet altitude in moun- 

 tains to the eastward; zonal range mainly Upper Sono- 

 ran," (Nelson) 



Colorado Desert Jack Rabbit. — Lepus californicus deserticola 

 (Mearns). 

 Very pale in color above, ashy gray, with very little black 

 wash; middle of abdomen white; smaller than typical cali- 

 fornicus, but with proportionally larger ears. Total length, 

 22 inches; tail vertebrae, 3.5 inches; hind foot, 5 inches; 

 ear from notch, 5 inches. Found in "Arid desert areas 

 .... north through southeastern California (east of Coast 

 Range and Sierra Nevada) at least to Mono Lake, through 

 most of Nevada, except the northwestern part north of 

 Pyramid Lake, most of Utah and southern Idaho, to 

 Pahsimeroi Valley, and east to Phoenix and San Francisco 

 mountains in Arizona. Vertical range from below sea level 

 in the Colorado Desert to 7,500 feet in the border of the pine 

 forest on the Mogollon plateau of northern Arizona, and to 

 9,000 feet in the San Bernardino Mountains, California; 

 zonal range mainly Upper and Lower Sonoran." (Nelson) 



Arizona Jack Rabbit. — Lepus californicus eremicus (Allen). 

 Paler and lighter in color than typical californicus. Above, 

 dark cream-buff to light pinkish buff with heavy blackish 

 wash. Darker than deserticola. Total length, 24 inches; 



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