266 ANTELOPES 



unfrequently happens that when one of the bucks has been killed, the 

 other members of the party will stand and allow a second shot. In 

 some cases, if the hunter sits down and waits patiently as near as he can 

 conveniently get without frightening the game, they will come gradually 

 towards him in an inquisitive manner." 



THE AOUL OR SOMMERRING'S GAZELLE 

 (Gazella soemmerringi] 



Aoul, SOMALI ; Maddado, DANIKIL ; Meidafiel, ABYSSINIAN ; 



Ariel, SUDANI 



(PLATE x,-fig. 4) 



Sommerring's gazelle, which is also an eastern species, has a more 

 northerly range than the last (which it slightly exceeds in stature), 

 being specially common, at least in former years, in Somaliland. 

 From granti it is distinguished by the greater intrusion of the white of 

 the rump-patch into the fawn-area and the general absence of a black 

 border to the former, the sharply defined and nearly black band down 

 the middle of the face, and the inward hook-like bend of the tips of 

 the horns of the bucks, which are shorter and more massive than in the 

 allied species. There is no distinct dark flank-band ; the tail, except 

 for the black crest, is wholly white ; and the ears are tipped with black. 

 The colour is in general more sandy and less rufous than that of 

 Grant's gazelle. 



The range of this species includes the Abyssinian Red Sea littoral, 

 Berber, eastern Sennar, Danakil, Bora Gallaland, and Somaliland ; 

 these gazelles occurring in the last-named country all over the Haud 

 plateau, as well as Ogoden. 



The typical race (Gazella soemmerringi typica), from the neighbour- 

 hood of Berber and Suakin and the adjacent districts, has the characters 

 given above as those of the species. 



The North Somali representative of the species (G. s. berberana) 

 was separated by Dr. P. Matschie in the Sitzungs-Berichte Ges. Naturfor. 

 Berlin for 1893, P- 65, on account of its superior stature, darker 

 colouring, and differently curved horns. According, however, to Mr. 

 Oscar Neumann, op. cit. 1906, p. 240, the difference in colour was due 

 to the comparison of specimens killed at different times of the year ; so 

 that the difference in stature and horn-curvature appear to be the only 

 distinctive features of the northern race. 



