256 ANTELOPES 



the Muscat gazelle (Gazella muscatensis} of southern Arabia, in which 

 the general colour is much darker and the flank-band brown. 



The habitat of the isabelle gazelle comprises the Red Sea littoral 

 from Suakin to Massowa, and the interior to Bogosland, Barla, 

 and Taka. 



HEUGLIN'S GAZELLE 



(Gazella tilonurd] 

 Tel-Badu, TIGRI 



With the tips of the horns of the bucks sharply hooked inwards, 

 as in the isabelle gazelle, this species is distinguished by the strongly 

 defined black flank-band and almost wholly black tail, as well as by 

 a certain superiority in the matter of size. The general colour of the 

 upper-parts is deep sandy, with the central face-streak only slightly 

 darker than the back, and the tail sandy at the root but elsewhere 

 black ; a dark nose-spot being absent. The shoulder-height is about 

 27 inches, and the record horn-length I i inches. 



Bogosland, Abyssinia, and Sennar mark the limits of the range of 

 this species, which inhabits elevated and more or less bush-covered 

 plains between 3000 and 5000 feet above sea-level. 



THE RED-FRONTED GAZELLE 



(Gazella rufifrons} 

 El Hamra, DlNKA ; Sent, GAMBIA 



In its typical western form this medium-sized and rather stoutly 

 built species resembles Heuglin's gazelle in having a narrow dark 

 brown flank-stripe, but differs by its much more rufous or chestnut 

 colouring, and the absence of a marked inward hooking of the horns 

 of the bucks. The general colour is rich sandy rufous, brightening 

 into rich rufous on the forehead and muzzle, and without a distinct 

 dark nose-spot. The white face-streaks are well defined, and the 

 dark face-stripes rufous ; while the light flank-band is broad and of 

 about the same sandy buff colour as the shoulders, and sharply defined 

 from the rufous of the back. The narrow dark brown band is 



