LEPUS. 435 



Color. Above yellowish brown; sides gray; flanks and rump 

 white; chin, throat, and under parts, except neck, and inner side of 

 legs white; under side of neck cinnamon; nape plumbeous; head 

 grizzled gray; orbital ring whitish; tail above blackish, beneath white; 

 ears naked except white fringe on edges. 



Measurements. Ear from notch, 126; from crown, 150; hind foot, 

 129. Skull: occipito-nasal length, 95.4; zygomatic width, 46.2; inter- 

 orbital constriction, 22; length of nasals, 42.2; greatest width of 

 nasals, 23.6; length of upper tooth row, 16.4. 



451. asellus (Lepus), Miller, Proc. Acad. Nat. Scien. Phil., 1899, 



p. 380. 

 DONKEY JACK RABBIT. 



Type locality. City of San Luis Potosi, State of San Luis Potosi, 

 Mexico. 



Geogr. Distr. State of San Luis Potosi, Mexico; range unknown. 



Genl. Char. Similar to L. merriami, with longer ears and shorter 

 tail. 



Color. Above grizzled black and white; dorsal line darkest; 

 rump and sides paler; under parts white, tinged with bluish gray; 

 collar buff; limbs smoky gray, tinged with broccoli brown on fore 

 legs and feet; hind feet white; a white line on fore legs to wrist, and 

 one on hind legs to feet; orbital ring whitish; nape grizzled like back; 

 ears broccoli brown, edges buff, tip black; tail above black, below 

 grayish white. 



Measurements. Total length, 558; tail vertebrae, 62; hind foot, 

 120; ear from crown, 175. Skull: greatest length, zoo; basal length, 

 84; zygomatic width, 44; interorbital constriction, 30; lateral length 

 of palate, 7 ; posterior margin of palate to tip of hamular process, 21 ; 

 length of nasals, 43; greatest width of nasals, 22; upper molar series, 

 1 6. 8; length of incisive foramina, 10.4; length of mandible, 74; length 

 of lower molar series, 17. 



texensis eremicus, Elliot, Syn. N. Am. Mamm., 1901, p. 291. 



texianus (sic) eremicus (Lepus), Allen, Bull. Amer. Mus. Nat. 



Hist., 1894, p. 347. 

 DESERT JACK RABBIT. 



Type locality. Fairbank, Cochise County, Arizona. 



Geogr. Distr. State of Sonora, Mexico, north to the White Moun- 

 tain region, southeastern Arizona. 



Genl. Char. Similar to L. texensis, but smaller. 



Color. Above pale yellowish brown and black, darker on head 

 and tinged with rufous; nape pale yellowish brown; flanks yellowish 

 white, grading into the pure white of under parts; spot on rump 



