MAMMALS OF THE MEXICAN BOUNDARY. l73 



Sides of head ash tivny. thickly aiiiiiilated with whitish. lirows and 

 bristles about eves all black; those about muzzle l)lack and .white. 

 Limbs reddish fawn, more or less mixed with gray and l)lac]v anti>- 

 riorly, whitish or 2>ale faw ii color posteriorly, and white around hoofs 

 and between' toes. Hoofs plumbeous, horn color where worn off at 

 apex. The metatarsal gland, wdiich measures 15 nnn. in length, is 

 surrounded by a tuft of reversed hair, wdiicli is white in the middle, 

 bordered by dark brown. 



A young nuile, an old female, and a young female (Nos. 4'i<Sl). 

 4ii9(), and 4-291, Mcarns's collection) killed Avith the type December 

 i^'i, 1897, and also in full winter pelage, agree essentially in coloration 

 Avith the adult male described above. exce[)t that the ears and crown 

 of head are blacker, and the light amudations on the uj)[)er side 

 of the tail nearly or ([uite wanting, leaving that part clear black. 



The sunnner coat, as usual, is reddish. 



Ho7'ns. — The horns of the type approach those of the Sonora deer. 

 Odocofle\is concsi (Cones and Yarrow), in size and form. Thert' 

 are two basal snags, one directed upward and backward (lengtli 

 75 mm.) and one forward (length 37 mm.), with four additional 

 points to each horn, making twelve points in all. The length of 

 the l)eam, measured to end of anterior point, following the curves 

 of the horn, is 440 nnn. The horns are syuunetrical, their longest 

 points measuring 175 nnn. in height. The beam is strongly curved 

 npward, forward, and inward, the tips of the anterior tines approach- 

 ing within 70 nnn. of each other. The total expanse of the horns is 

 330 mm. ; the circumference of beam, at base, 80 mm. 



Measure me II f.s of fj/pe. — Length, measured from end of nnizzle to 

 end of last caudal vertebra, 1,585 mm.; tail vertebra?, 265 (to end of 

 hairs, 345) ; ear from crown, 1()0; ear from base of opening, 140; 

 girth of chest, 800; from tip of nose to angle of mouth, 90: to eye. 

 152; to center of pupil, 170; to base of ear, 225; to base of horn, 220; 

 to occipnt, 280; diameter of eye, 20; fore limb, from coracoid process 

 of scapula to end of hoof, 700; from olecranon, 575; length of manus, 

 325: hind limb, from kneejoint to end of hoof, G25; length of jjes, 

 430: height of animal at shoulder, 880; height at hips, 900; from 

 great trochanter to coracoid, 710. 



Cranial eharaeters. — The skull in 0. fe-earu/s is narrow, with elon- 

 gate nasals. That of the type, an old male in w hich the permanent 

 premolars are considerably worn, presents the following measure- 

 ments: Basilar length (basion to front of premaxillary). 244 nun.: 

 zygomatic breadth (across middle of orbits), 114; occipito-nasal 

 length. 208; least interorbital breadth,- 71 ; greatest length of nasals, 

 81; greatest l)i'eadth of nasals, 31: least breadth of nasals. 18.5; 

 greatest diameter of orbit, 38; length of u})per lateral tooth-row, 24. 



