VII.] UNGULATES. 245 



is represented only by the minute royal antelope (JV. pygmaus} 

 of Guinea; Nesotragus is typified by the Zanzibar steinbok 

 (JV. moschatus] ; the true steinbok (Raphiceros campestris'} forms 

 the fourth genus ; the oribi of South Africa ( Oribia scoparia) is 

 still more distinct; while the well-known klipspringer (Oreotragus 

 saltator}, which ranges from the Cape to Abyssinia, differs from 

 all the rest by its coarse brittle fur. 



The Cervicaprince, include larger forms. Foremost among 

 these is the South African rheebok (Pelea) ; while the water-buck 

 and its allies (Cobtts) are some of the largest of all antelopes. 

 The last representative of this section (Cervicaprd) is typified by 

 the South African rietbok, but there are also other species in West 

 and East Africa. The fine South African antelope known as the 

 pala (sEpyceros], together with an allied species from the West 

 Coast, form the first representatives of another section. Here 

 belong the true gazelles (Gazella), more characteristic of the desert 

 tracts of the eastern half of the Holarctic region, although repre- 

 sented in South Africa by the somewhat aberrant springbok, as 

 well as by several more typical species on the East Coast. Clarke's 

 gazelle (Ammodorcas) of Somaliland is, however, the sole species 

 of an exclusively Ethiopian genus ; and the same is the case with 

 Waller's gazelle (Lithocranius\ of which the range extends on the 

 East Coast from Somaliland to Kilimanjaro. The single species 

 of the East African genus Dorcatragus seems to be an aberrant 

 gazelle, with the trunk-like muzzle of Madoqua, but retaining 

 the small gland-pits of the type. Yet another section of 

 antelopes is typified by the beautiful sable antelope and its 

 allies (Hippotragus), in which the horns sweep backwards in a 

 graceful curve, and are ringed nearly to their tips. This genus is 

 exclusively Ethiopian, but in the one typified by the gemsbok 

 (Oryx), and characterised by the long and slender horns being 

 either straight or but slightly curved, and ringed only at the base, 

 the range includes all the desert regions of Africa, Arabia, and 

 Syria, although the majority of the species are Ethiopian. To the 

 same section belongs the addax antelope (Addax), but although 

 this animal occurs as far south as latitude 18 N., it is mainly an 

 inhabitant of the deserts of North Africa, Arabia, and Syria. The 

 last section includes some of the largest and at the same time the 



