THOMSON'S GAZELLE 241 



Head of Male Thomson's Gazelle 



THOMSON'S GAZELLE (Gazella thomsoni). 



Swahili name, Sivallah. 



The distinct black nose-patch and the great width of the black 

 flank-band serve at once to distinguish this handsome species from 

 G. ruffrons, with which it agrees in the general form of the horns. 

 The general colour of the upper parts is deep sandy rufous, with all 

 the markings well developed and sharply defined ; the central face- 

 streak being a deeper rufous, and the light lateral band present, although 

 only slightly paler than the back. There is also a narrow black band 

 bordering the white on the sides of the rump ; and knee-tufts are 

 developed. The horns are long, and rather like those of the Indian 

 gazelle on an enlarged scale. Height at shoulder about 25 inches. 

 Distribution. — The interior districts of British and German East Africa, 



from Lake Rudolph southwards to Irangi. Discovered by Joseph 



Thomson during his expedition to the Victoria Nyanza in 1883-84, 



and named by Dr. Giinther in the latter year. 



Measurements of 4 males and i female shot by F. J. Jackson, C.B. 



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