234 MAMMALIA. 
Length 6' 13"; tail 10"; height at shoulders 3’ 2”; glandular 
sac on tarsus 1} inch long. 
Male and female winter dress was sent from Fort Colville, 
Columbia River, May 26, 1843, by A. Macdonald, Esq., and pre- 
sented by the Hudson’s Bay Company, but arrived without hair. 
The Black-tail Deer never carries its tail erect when running, 
and viewed from behind shows two narrow white lines of hair, 
instead of the large, white, and elevated tail of the Virginian 
Deer. 
Var. 1. With a basal antler on the inner side of the horn, which 
was directed upwards and backwards. 
Hab. Oregon; T. Peale, 1. c. 41. 
Var. 2. No internal basal antler. 
Hab. California; T. Peale, 1. c. 41. 
There is a skull of a young male American Deer which was in 
the Zoological Gardens, the skin of which has not been preserved. 
It is intermediate in character between the other species; it has 
the rather slender face of the Virginian Deer; but it has a much 
larger, subtrianglar, suborbital pit, of the same form, but only 
about two-thirds the size of the pit in the skull of the broad- 
faced Long-tailed Deer. It indicates the existence of another 
species, that may be characterized by the skull. Nasals: each 
bifid in front. Intermaxillar nearly reaching to the nasals. The 
length entire 95%; in.; of face from orbits 52; in.; width of lower 
edge of orbit 4,4, in.; of upper edge of orbit 334 in.; of face in 
front of the first grinder 149 in.; of skull 249 in. 
** Front hoof broad, cordate. Tail not hairy beneath. 
7. CARIACUS MACROTIS. The MuLE DEER. 
Brownish fulvous. Chin without any, or only an indistmet 
band. Tail pale ferruginous, with a black tuft at the end, and 
without any hair beneath. Ears very large. Hoofs of the fore 
feet. broad, cordate, nearly as broad as long, flattened and con- 
cave beneath. Horns larger and more spreading than in C. Vir- 
gintanus. 
Var.? Jumping Deer, Umfreville, Hudson’s Bay, 164. 
Black-tailed or Mule Deer, Gass. Journ. 55; Lewis & Clark, 1. 
91, 92, 106, 152, 239, 264, 328, ii. 152, iti. 27,125; James, 
Long’s Exped. ii. 276; Godman, Nat. Hist. ii. 305. 
Mule Deer, Warden, United States, i. 245. 
Cerf Mulet, Desm. Mamm. 443, notes. 
Le Daume fauve & queue noire, Warden, Etats Unis, ed. Gall. 640. 
Mule Deer, Anglo-Americans of the Rocky Mountains, 
