240 
Syn. 444, 615 ; Sundeval, Pecora, 59 ; Richardson, Faun. Bor. Amer. 
254. t. 20; Peale, U.S. Expl. Exped. 41. t. 10 (ined.), fig. at p. 43, 
fore-feet ; Gray, Knows. Menag. 67.—C. auritus, Desm. Dict. Class. 
H.N. iii. 379. 
Inhabits N.W. America; Arakansa. 
We have several skulls of this genus in the British Museum, which 
offer very distinct characters, but unfortunately, not having the skins 
belonging to them, we cannot identify with certainty the species to 
which they belong. 
These skulls vary considerably in width and comparative length of 
the face, and in the extent and depth of the suborbital pit ; in some, 
which are probably the skulls of the Black-tailed Deer as they come 
from the north-west coast, the pit is very large and deep ; and thirdly, 
in the extent of the intermaxillary lines. In some they scarcely reach 
to the nasal; in others they reach to it and are united to it by a rather 
broad suture ; and in others they do not nearly reach to it, but stop 
abruptly, ending in a notch in the front upper edge of the maxillary. 
There is imported by the North Western American Fur Company 
the flat skin of two Deer which probably belong to this genus, and 
appear distinct from the preceding: 1. The Orenoka Deer (of the 
Company’s list). It came from Central America, is of a large size, 
of a bright red-brown colour, with the hair of the back short and 
rather adpressed, the chin and under part of the body white, the tail 
blackish ; 2. The Yucatan Deer, about the size of the American Deer 
(C. Virginianus), but very distinct from the skin of that species in 
the same store; the fur is short red brown with blackish tips. 
15. Coassus, Gray; Subulo, H. Smith, Sundeval. 
Horns simple, rudimentary, shelving back ; ears rather short, broad, 
rounded; tail short ; the facial line rather convex; the fur short, of 
the forehead (in both sexes) elongate, forming a rhombic tuft between 
the horns and face ; legs without any tuft on the outside of the meta- 
tarsus, but with a pencil on the inside of the hocks. Confined to Tro- 
pical or South America. 
* Ears nakedish; skull with a very small, shallow, suborbital pit ; 
supraorbital foramens in a groove. East coast of America. 
Coassus. 
1. Coassus NEMORIvAGUS. The CUGUACU-APARA. 
(Mammalia, Pl. XXII. XXIII. XXVII. f. 1, 3, 5.) 
Pale brown; the hair dull-coloured, brown, with a yellow subterminal 
band which wears off; a paler streak over the eyes. Young: brown, 
white spotted; spots of sides unequal; nape dark. Skull elongate, 
suborbital pit broad, subtrigonal shallow ; grinders moderate, infra- 
orbital ridge very distinct, sharp-edged. The intermaxillaries do not 
reach to the nasal but fit into a notch in the maxilla. 
Cervus nemorivagus, F. Cuvier, Dict. Sci. Nat. vii. 485 ; Cuvier, 
Oss. Foss. iv. 54. t. 5. f. 50; Fischer, Syn. 446, 618; H. Smith, 
G. A. K.iv. 142. t. ; Sundev. Pecora, 60; Licht. Darstel. t. 21.— 
