FIELD BOOK OF MAMMALS 



Subgenus Macrotolagus. — See Black-tailed Jack Rabbits. 



White-sided Jack Rabbits 



This group is made up of large Jack Rabbits which have a 

 whitish area on the sides from shoulder to rump and lack the 

 black on the posterior tip of the ears. This subgenus contains 

 the most showy of the North American Leporidae, all of the five 

 species and two subspecies being confined to desert or arid 

 regions. The group is essentially Mexican in its distribution, 

 only two forms ranging north into the United States. 



Antelope Jack Rabbit. — Lepus alleni alleni Meams, 



Size very large; ears enormous; tail short. Total length, 

 24 inches; tail vertebrae, 2.5 inches; hind foot, 5.2 inches; 

 ear from notch, 6 inches. Color of back cream-buff with 

 black wash; top of head like back; ears buffy in front, 

 whitish behind; nape brownish buff; eye- ring whitish or 

 buffy; sides of shoulders to rump and outside of hind legs 

 light iron-gray; upperside of forelegs and forefeet grayish 

 buff grizzled with dusky ; tail white except for blackish area 

 extending from rump down to about middle of upperside 

 of tail; underparts clear white except for buffy area on 

 throat. Found in "The desert plains of southern Arizona, 

 from Phoenix, Tucson, and Benson, south. . . . Vertical 

 range from near sea level in Sonora up to about 3,500 feet 

 in southern Arizona; zonal distribution Lower Sonoran." 

 (Nelson) Plate XXXVI. 



Gaillard Jack Rabbit. — Lepus gaillardi gaillardi Meams. 

 Smaller than typical alleni; total length, 21.5 inches; tail 

 vertebrae, 3.2 inches; hind foot, 5.3 inches; ear from notch, 

 4.5 inches. Color above, head, and back, deep vinaceous 

 buff; a median dusky line down rump onto tail; front of 

 hind legs and feet white, forelegs grayer; underparts white 

 except for buffy throat. Found on ' 'Grassy plains of south- 

 western New Mexico near Mexican border and southward. 

 ..." (Nelson) 



Gray- sided Jack Rabbits 



This section of the subgenus Macrotolagus comprises the 

 so-called Black-tailed Jack Rabbits, of large size, long hind 

 legs, long ears, and black tails. Plate XXXVI. 



California Jack Rabbit. — Lepus calif ornicus calif ornicus Gray. 

 Size large, darkest colored of the Jack Rabbits found in the 

 United States. Total length, 24 inches; tail vertebrae, 4 

 inches; hind foot, 5.2 inches; ear from notch, 5.2 inches. 

 Color of upperparts dark ochraceous buffy, sometimes with 



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