MAMMALS OF THE MEXICAN BOUNDARY. 175 



ODOCOILEUS COUESI ( Coues and Yarrow). 

 SONORA WHITE-TAILED DEER. 



Cervus mexicanus, Baird, Mam. X. Am.. 1857, pp. <'>'<■> (355, pi. xxiv, fig. '2 



(feet). ( Excluding synonyms ; no1 of Gmelin.) 

 ( 'milieus virginianus var., Coues and Yarrow, Wheeler Surv., V. Zool., 1875, 



p. 72. 

 "Cariacus virginianus var. couesi, Rothrock MSS." Coues and Yarrow, 



Wheeler Surv., V. Zool.. 1875, p. 7 - _\ and, by implication in text, p. 7.">. 

 Dorcelaphus couesi, Allen, Bull. Am. Mus. Nat. Hist, VII, Art. VI, June 29, 



1895, pp. 200, 201 (establishes the species and gives ;i diagnosis based 



on six specimens from the Santa Cruz Mountains, Sonora, .Mexico. 



killed in February I. 

 Odocoileus couesi. Thompson (i. e., Seton), Forest and stream. LI, <><-t. s, 



1898, |>. 286. .Mil. i. i:i: and ltiiix. Proc. Bost. Soc. X. II.. XXX. N T o. 1. 



Dee. 1'7. 1901, l>. 15 (S.vst. Results Study X. Am. Mam. to close of 1900). 

 [Odocoileus americanus] couesi, Elliot, Field Col. Mus., Zool. Ser., 11. 



1901, |». 40 ( Synop. Mam. X. Am. I. 

 [Odontocoelus] americanus couesi. Elliot, Field Col. Mus.. Zool. Ser., IV. 



Pt. 1. 1904, p. 70, fig. xxiii (Mam Mid. Am.). 



Type-locality. — Camp Crittenden, Pima County, Arizona. 



Geographical range. — Southwestern New Mexico, southern Ari- 

 zona (chiefly south of the Gila River), and southward in Chihuahua 

 and Sonora, Mexico. Its vertical range extends from near sea level 

 to the boreal summits of the highest mountain ranges of the region. 



Description.— A male (No. hllu> U.S.N.M.), killed by Mr. Holz- 

 ner in the Patagonia Mountains, November -27. 1892, and a female 

 (No. y4f|, U.S.N.M.) from the Pajaritos Mountains, near Nogales, 

 December 24, 1892, ;ui' in complete winter pelage. The color above 

 is brownish gray, much paler than in Odocoileus americanus. The 

 hail 1 is fine for a deer, and nearly straight: drab-gray at base, darker 

 on the terminal portion, which is finely ringed with white and 

 pointed with black, which gives the usual pepper-and-salt mixture 

 of color common to most species of Odocoileus in winter pelage. 

 There is a dark, brownish, vertebral area extending backward from 

 the crown, most intense on the upper side of the neck; and low down 

 on the sides the color becomes pale drab-gray, stained below with 

 yellowish brown, which becomes most intense around the axillae and 

 posterior border of the thighs, which tire edged with wood brown. 

 The abdominal and inguinal regions, together with the hollows of 

 the thighs and axillae, are white. Chest brownish drab -gray. 



The tail in this deer (fig. 10) is broad, full, and foxy, being hairy 

 below almost or quite to the base, and entirely white on the under 

 surface. The white of the underside -hows a- a border to the colored 

 upper surface, which is dull cinnamon, the outermost colored hair- 

 being pointed with black, giving definition to the pattern. Where 



