LEPUS. 433 



449. gaillardi (Lepus), Mearns, Proc. U. S. Nat. Mus., 1896, p. 560. 



Elliot, Syn. N. Am. Mamm., 1901, p. 289. 

 GAILLARD'S JACK RABBIT. 



Type locality. Plagas Valley, near its west fork, near Monument 

 No. 63, Mexican boundary line, Grant County, New Mexico. 



Geogr. Distr. State of Sonora, Mexico, into plain east of the San 

 Luis Mountains, at the head of the Rio Yaqui, and east of that river's 

 watershed. Extent of range unknown. 



Genl. Char. Similar to L. callotis, but more yellowish; ears 

 smaller; no black patch on nape. Skull: nasals long and very wide; 

 supraorbital processes elevated, massive. 



Color. Head cream buff and black; whitish area about eye; 

 nape ochraceous buff; back pale ochraceous cinnamon, mixed with 

 black ; rump and thighs white with a few black hairs ; sides and under 

 parts white; limbs white, washed with buff on outer side; gular patch 

 buff; sides of neck and front of shoulders ochraceous; ears yellowish 

 brown, mixed with black anteriorly, white posteriorly, tips white, 

 fringe on anterior edge ochraceous buff, of tips and posterior edge 

 white; tail above black with many white-tipped hairs, beneath white. 

 But little difference between summer and winter pelages. 



Measurements. Total length, 530; tail vertebrae, 77; ear from 

 crown, 146; hind foot, 131. 



a. battyi (Lepus), Allen, Bull. Am. Mus. Nat. Hist., 1903, p. 607. 

 BATTY'S JACKASS RABBIT. 



Type locality. Rancho Santuario, State of Durango, Mexico. 



Genl. Char. "Similar to L. galliardi, but much smaller, the gen- 

 eral coloration yellower and less rufescent, especially the under fur; 

 prepectoral collar much paler, nearly white, or pale brownish white 

 instead of buff; front of fore feet grayish white instead of buffy white, 

 and upper surface of hind feet clearer or purer white; extreme ter- 

 minal portion (about 25 mm.) of anterior border of ear blackish in 

 both forms." 



Measurements. "Type, total length, 511; head and body, 451; 

 tail vertebrae, 60; hind foot without claws, 122; ear from notch, 127; 

 from crown, 140. Skull: total length, 92; basal length, 82; zygo- 

 matic breadth, 41 ; greatest breadth across supraorbital processes, 31 ; 

 postorbital constriction, n; length of nasals, 40; anterior width of 

 nasals, n; posterior width of nasals, 20; palatal length, 9; length of 

 premolar-molar series (alveolar border), 17." (Allen, 1. c.) 



450. alleni (Lepits), Mearns, Bull. Am. Mus. Nat. Hist., 1890, p. 



294. Elliot, Syn. N. Am. Mamm., 1901, p. 288. 



