340 UNGULATA 
large lachrymal vacuity, and the premaxillz reaching the very long 
nasals. Tail long, with a ridge of hair above, and slightly tufted 
at the end. Colour uniform. Six species, African. 
The Antelopes of this genus are water-loving animals, the 
Water-buck (C. ellipsiprymnus) and the Singsing (C. defassus) being 
well-known examples. Both these species are much alike, standing 
as much as 4 feet 6 inches at the withers. The Water-buck of 
South and Eastern Africa is characterised by the coarseness of 
its long hair ; while in the Singsing of West and Central Africa 
the hair is remarkably fine and soft. Fossil Antelopes from the 
Pliocene of India are referred to Cobus. Helicophora, from the 
Lower Pliocene of Attica, is regarded as allied to Cobus, but it has 
no distinct supraorbital pits. 
Cervicapra.iman allied South African genus in which the tail is 
short and bushy and the premaxille do not reach the nasals. Three 
species. 
The Reitbok (C. arundinewm) is of a grizzly ochre colour ; it 
stands nearly 3 feet in height, and has horns about 1 foot in 
length. The Nagor (C. redunca) is about 6 inches shorter, with 
horns of half the length, and fulvous brown above and white 
below ; the West African C. bohor being rather larger. 
Antilopine Section. —A large group of moderate-sized or 
small Antelopes, most abundant in the deserts bordering the 
Palearctic, Oriental, and Ethiopian regions. Horns generally 
compressed and lyrate, or recurved, or cylindrical and _ spiral, 
ringed at base, sometimes present in both sexes. Skull with large 
pits at apertures of supraorbital foramina of frontals, and generally 
a distinct lachrymal fossa. Molars of upper jaw narrow, without 
inner accessory column, and resembling those of the Sheep and 
Goats. Tail moderate, compressed, hairy above. 
Antilope.-—Horns, present only in the male, long, cylindrical, 
subspiral, and diverging. Suborbital gland large, with a somewhat 
linear opening ; lachrymal depression of skull very large, and a 
small lachrymal fissure. Glands in the feet ; lateral hoofs present. 
One species, India. 
The well-known Black-buck (A. cervicapra) is found on open 
plains all over India, except in lower Bengal and Malabar. Old 
males are deep blackish-brown in colour on the back and sides and 
the outer surfaces of the limbs, the under parts and inner surfaces 
of the limbs white, and the back of the head, nape, and neck 
yellowish. Young males and females are fawn-coloured above. 
Very large herds are seen in the plains about Dehli and Mattra, 
which are said in some instances to reach to thousands. Horn- 
cores are found in the Pleistocene deposits of the valley of the 
* De Blainville, Bull. Soc. Philom. 1816, p. 75. Syn. Eleotragus. 
* Pallas, Spicilegia Zoologica, vol. i. p. 3 (1767). 
