CLARKE'S GAZELLE. 129 



special relationship to that most aberrant Gazelle the Gerenook 

 (Lithocranius walleri), and appears certainly to be worthy of generic 

 distinction. On- the first arrival of the specimens, before the skulls 

 were cleaned, and before Mr. Sclater had received from Mr. Swayne the 

 face-skins mentioned below, the animal was naturally supposed to be 

 a Reed-buck from the character of its horns, little likely as it appeared 

 that a Reed-buck would occur in the dry sandy plateau of Somali 

 Land. Now, however, that better material is available, I am 

 able to draw up a fairly complete account of the more essential 

 characters of this most beautiful Gazelle, of the discovery of which 

 Mr. Clarke, both as a sportsman and naturalist, has so much reason 

 to be proud. 



Muzzle, character of face-marking, and presence of anteorbital 

 glands as in Gazella ; general form (as described by Mr. Clarke, see 

 below) and skull more as in Lithocranius ; horns in curve and general 

 appearance as in Cervicapra. 



Coloration of face, using Sir Victor Brooke's phraseology, as 

 follows : Central facial band deep rich chestnut-rufous, becoming 

 duller towards the bases of the horns ; light facial streaks pure white, 

 very prominent and sharply defined, extending the whole length of the 

 head from the bases of the ears to the corners of the nostrils, some- 

 what duller and more indistinct at their extremities, but broadening 

 in the middle to encircle the eyes ; dark facial streak present, but not 

 strongly marked ; cheeks and sides of neck pale fawn ; throat white ; 

 crown between and behind horns brown or grizzled fawn, the latter 

 condition occurring in the older of Mr. Swayne's two head-skins ; a 

 marked whorl of hairs situated between the ears ; back of ears short- 

 haired, dark fawn basally, gradually darkening to black terminally; 

 insides white-haired, but with black tips. 



Horns evenly curved upwards and forwards, the basal halves 

 running backwards and the terminal halves nearly vertically upwards, 

 the main curvature being therefore exactly in the opposite direction 

 to that found in Gazella and Lithocranius. The horns themselves 

 slender, their smooth unridged portion very long, the first indistinct 

 ridge occurring about five inches from the tip. Ridges widely separate, 

 strongly defined anteriorly, but becoming abruptly obsolete about half- 

 way round, the sides and back showing scarcely a trace of them ; 



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