CHAP. XVII.] 
MAMMALIA. 
223 
a very peculiar form more nearly allied to the buffaloes than 
to any other type of oxen. 
Sub-family II. Tragelaphina; (3 genera, 11 species). The 
Bovine Antelopes are large and handsome animals, mostly 
Ethiopian, but extending into the adjacent parts of the Pala> 
arctic and Oriental regions. The genera are : Oreas (2 sp.), 
elands, inhabiting all Tropical and South Africa. Tragela- 
phm (8 sp.), including the bosch-bok, kudu, and other large 
antelopes, ranges over all Tropical and South Africa (Plate IV., 
vol. ii., p. 261). Portax (1 sp.) India, but rare in Madras and 
north of the Ganges. 
Sub-family III. Orygina (2 genera, 5 species). Oryx (4 sp.) is 
a desert genus, ranging over all the African deserts to South 
Arabia and Syria; Acldax (1 sp.) inhabits North Africa, North 
Arabia, and Syria. 
Sub-family IY, Hippoteagina (1 genus, 3 species). The 
Sable Antelopes, Hippotragus , form an isolated group inhabiting 
the open country of Tropical Africa and south to the Cape. 
Sub-family Y. Gazfalina (6 genera, 23 species). This is 
a group of small or moderate-sized animals, most abundant in 
the deserts on the borders of the Paloearctic, Oriental, and 
Ethiopian regions. Gazella (17 sp.) is typically a Pakearctic 
desert group, ranging over the great desert plateaus of Nortli 
Africa, from Senegal and Abyssinia to Syria, Persia, Beloo- 
chistan, and the plains of India, with one outlying species in 
South Africa. Procapra (2 sp.), Western Thibet and Mongolia 
to about 110° east longitude. Antilope (1 sp.) inhabits all the 
plains of India. AEpyceros (1 sp.) the pallah, inhabits the open 
country of South and South-east Africa. Saiga (1 sp.) a singular 
sheep-faced antelope, which inhabits the steppes of Eastern 
Europe and Western Asia from Poland to the Irtish Iiiver, 
south of 55° north latitude. (Plate II., vol. 1, p. 218.) Pan - 
thalops (1 sp.) confined to the highlands of Western Thibet and 
perhaps Turkestan. 
Sub-family VI. Antilooaprinas (1 genus, 1 species), Antilo- 
capra , the prong-horned antelope, inhabit both sides of the 
Eocky Mountains, extending north to the Saskatchewan and 
