302 ANTELOPES 



blaauwbok remaining in South Africa. This antelope apparently 

 stood about 45 inches at the shoulder; and the horns of the Paris 

 specimen measure 21^ inches in length along the front curve. 



THE ADDAX 



{^Addax nasoviaailatus) 



Kiibaji, Arabic 



(Plate xi, fig. 4) 



Although commonly regarded as most nearly akin to the oryx 

 o-roup, the North African addax resembles sable and roan antelope in 

 the presence of a large white eye-tuft, and may perhaps therefore be 

 more nearly related to the two latter than to the former. Be this as 

 it may, the species, which is the only representative of its genus, is 

 evidently a member of the Hippotragincz which has lost, in its summer 

 dress at all events, the whole of the dark markings characteristic of 

 the more typical representatives of that group, with the exception of a 

 patch on the forehead ; the assumption of a uniform pale sandy and 

 white livery being, of course, an adaptation to a purely desert life. 



As a genus, the addax is characterised by the long, spirally 

 twisted and closely ridged horns (which recall those of the lesser 

 kudu), and the exceedingly broad and shallow hoofs, somewhat like 

 those of a reindeer. In height the animal stands about 42 inches at 

 the shoulder. The general colour in summer is sandy above and 

 whitish on the rump, under-parts, and limbs, with a brown patch on 

 the forehead, below which are the white eye-tufts ; the hair, except on 

 the forehead, being everywhere short, wiry, and somewhat sparse. 

 In winter the typical Tunisian race, at any rate, becomes greyish and 

 longer-haired, while a heavy mass of long brown hair is developed on 

 the neck, shoulders, and forehead, although a chevron below the eyes, 

 the lips, and a spot on each ear are white. 



The addax is a native of the desert districts of northern Africa, 

 inclusive of southern Tunisia and Algeria, the Sahara, and the Egyptian 

 Sudan ; its southern range in the last-named district extending as far 

 as latitude 7° i 5' N. It has been reported to occur also in Arabia ; 

 but, as stated under the heading of the white oryx (p. 289), on 

 apparently untrustworthy evidence. 



In 1908 Captain P. E. Vaughan sent to the British Museum the 



