ANTELOPES. 
3 11 
Two species of this genus from West Africa also call for mention 
Wood-Antelope. r ° .... 
on account ot their great superiority m size over its other representa¬ 
tives. One of these is the wood-antelope ( Csylvicultor) of Sierra Leone and the 
Gabun, and the other the black wood-antelope ( C . jentinki) from Liberia. The 
former stands about 2 feet 10J inches in height, and is of a blackish colour, with 
the hinder part of the middle of the back marked by a yellowish white line. The 
second species is rather smaller, and is of a greyish colour on the body, with the 
head and neck black, and the legs, lips, and inner sides of the ears whitish. The 
tuft of hair on the head is small and inconspicuous. Altogether nineteen species of 
these antelopes are recognised by Mr. O. Thomas. 
Four-Horned Antelope. 
Genus Tetraceros. 
The chousingha, or four - horned antelope ( Tquadricornis ) is the Indian 
representative of the duikerboks, and differs from all other living Ruminants in 
MALE AND FEMALE FOUR-HORNED ANTELOPES (iV liat. size). 
that the male generally has two pairs of horns, of which the larger are placed as in 
the duikers, while the smaller pair are situated immediately over the eyes. The 
gland below the eye has nearly the same elongated aperture as in the duikers; 
but there is no tuft of hair on the crown of the head, and the upper molar teeth 
