CHAP, xvii.] MAMMALIA. 223 



a very peculiar form more nearly allied to the buffaloes than 

 to any other type of oxen. 



Sub-family II. TRAGELAPHIN.E (3 genera, 11 species). The 

 Bovine Antelopes are large and handsome animals, mostly 

 Ethiopian, but extending into the adjacent parts of the Palre- 

 arctic and Oriental regions. The genera are: Oreas (2 sp.), 

 elands, inhabiting all Tropical and South Africa. Tragela- 

 phus (8 sp.), including the bosch-bok, kjao^u, and other large 

 antelopes, ranges over all Tropical and South Africa (Plate IV., 

 vol. i|., P- 261). Portax (1 sp.) India, but rare in Madras and 

 north of the Ganges. 



Sub-family III. ORYGIN^; (2 genera, 5 species). Oryx (4 sp.) is 

 a desert genus, ranging over all the African deserts to South 

 Arabia and Syria ; Addax (1 sp.) inhabits North Africa, North 

 Arabia, and Syria. 



Sub-family IV. HIPPOTRAGIN^E (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 V. GAZELLIJSLE (6 genera, 23 species). This is 

 a group of small oj? moderate-sized animals, most abundant in 

 the deserts on the borders of* the Palsearctic, Oriental, and 

 Ethiopian regions. Gazella (17 sp.) is typically a Palaearctic 

 desert group, ranging over the great desert plateaus of North 

 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. JEpyceros (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 Eiver, 

 south of 55 north latitude. (Plate II., vol. i., p. 218.) Pan- 

 th$lops (1 sp.) confined to the highlands of Western Thibet and 

 perhaps Turkestan. 



Sub-family VI. ANTILO CAPRINE (1 genus, 1 species), Antilo- 

 capra, the prong-horned antelope, inhabit both sides of the 

 Eocky Mountains, extending north to the Saskatchewan and 



