RUMINANTIA CERVINAE CERVUS MACROTIS. 



657 



elsewhere. The under parts generally appear to be ashy brown, like the back, but without 

 annulation of the hairs. The only whitish portion of the inferior surface is seen beneath the 

 head, around the axillae, and in the groin. On each side of the tail, on the end of the rump, 

 is a dull white patch, crossing above the tail and involving its entire basal half or two-thirds. 

 The tail itself is quite slender and cylindrical on the basal two-thirds ; the hair there being 

 compact and close and then expanding into a dense tuft, which is entirely black. A narrow 

 line along the under surface of the tail, which in summer is quite naked, in winter is thinly 

 coated with hair. The legs are of a yellowish rusty. The ears are of a sooty tinge along the 

 edges of both margins, the centre and basal portion of the concavity being white, that of the 

 convexity like the back ; there is a whitish patch in the basal portion of the outer edge behind. 

 The muzzle presents a hoary appearance ; on each side of the naked muffle is a black spot, 

 seen also on the side of the lower jaw, anterior to these the muzzle is white. 



The horns of a mule deer, from Fort Union, at the mouth of the Yellowstone, are, in shape, 

 almost precisely like those of one specimen of C. columbianus, from San Francisco. They are doubly 

 and nearly equally dichotomized. The first fork falls a little short of the middle of the antler, 

 the second fork of each branch falls a little beyond the first third of the remaining distance. 

 The posterior fork is rather the larger of the two. There is a small point on the upper edge of 

 the antler, midway between the base and the first fork. 



Fig. 19. Cervus macrotis, No. 831. Big Sioux, Neb. Eight horn from inside. Size, 8.23 inches 



to the inch. 

 Fig. 20. Same species, (2918.) Yellowstone. Eight horn from inside. Size, 5 inches to the 



inch. 



83 L 



