270 



ANTELOPES 



known as the red-necked gazelle, in which the rufous area is reduced 

 to a large saddle on the fore part of the back, continued forwards so 

 as to embrace the throat and neck ; the rest of the body and the 

 whole of the head being white, which, at the junction, passes im- 

 perceptibly into the rufous. A wash, or even a narrow band, of 

 chestnut may, however, be present on the front of the fore-legs. This 

 race inhabits Dongola, the district between Korti and Ambukol, 

 northern Kordofan, and, if we may judge from a skull in the British 





Fig. 56. — Head of the Addra (Kordofan race of the Dania) Gazelle. 



Museum, Sennar on the eastern side of the Nile. The great 

 amount of white indicates extreme special adaptation to a desert- 

 life ; such a type of colouring probably rendering the animal quite 

 invisible in the shimmering glare. It would be interesting to know 

 whether this shimmer is greater in Kordofan than in the deserts 

 farther west. 



The rufous area on the back (which is continuous with that on the 

 neck) is subject to considerable individual variation in intensity. In 

 the specimen of which a coloured plate is given in the Book of 



