58 



MAMMALOGY. 



Horns larger and more spreading, but having the points turned forward 

 in the same manner ; snout more arched, and the lachrymal opening 

 larger; hoofs rounded, the under surface concave; tail pale ferruginous 

 above, destitute of hair beneath, and having a tuft of black hair at the 

 extremity. Color pale ferruginous, darkest on the back, lighter 

 beneath ; chin, throat, inside of the thighs and belly, dirty white ; 

 hair flattened and undulating; eyelashes and whiskers black; irides 

 dark brown; pupils blue-black and horizontally linear, ears large, 

 almost naked, dark colored externally, and lined with scattered white 

 hairs internally. 



" Total length, five feet seven inches ; tail, seven and a half inches ; 

 black tuft, five and a half inches ; height at the shoulder, three feet ; 

 at the rump, three feet four inches; circumference, breast, three feet 

 three inches ; abdomen, three feet nine inches ; space between the 

 horns, two and three-tenths inches ; length of the horns by the curve, 

 one foot four and a half inches ; lachrymal opening, one inch ; ear in 

 length, ten inches; width, four inches; from the base of the ear to 

 the shoulder, one foot ; fore leg from the carpal joint to the point of 

 the hoof, one foot one inch ; hoof, one and six-tenths of an inch ; 

 measured along the commissure beneath, two and a half inches; in 

 width, two inches ; hind foot from the os calcis to the tip of the hoof, 

 one foot six and a half inches; hoof, one and seven-tenths of an inch ; 

 along the commissure beneath, two and a half inches; width, one and 

 six-tenths of an inch ; spurious hoofs, eight-tenths of an inch ; width, 

 nine-tenths of an inch. 



"Dental formula : incisors, g; canine, ^ §; molars, | g = 32. 



" The specimen from which our description is taken, was killed 

 on the 1st of August, and is consequently in summer hair. The 

 horns were not fully grown, but are carefully delineated in our plate, 

 and will give a correct idea of their appearance when covered with 

 ' velvet,' — a terra used by hunters to express the nature of the short 

 hair which covers the horns of deer when they are growing. It is 

 the same specimen described by Mr. Say, and the drawing for Plate 

 X, is finished from a sketch made on the spot. The landscape and 

 background of the plate being sketched at the same time, are given 

 as characteristic of the country generally inhabited by the mule deer. 



" From observation, and all the information collected, we believe 

 this species, in its geographical range, is confined to the Rocky Moun- 

 tains. It is most abundant on the eastern slope, and delights in rocky 



