0/ Gazella Isabella to Gazella dorcas. 295 



a few typical oxaniplcs from different localities, measurements 

 of which are given in the tal)le (p. 294). Only those are 

 given which I have found by practice to be reliable in 

 showing constant proportions. 



Gazella Uttoralis, Sj). n. 



Hather smaller than O. dorcas. General colour soft 

 reddish fawn, with lighter lateral stripe, and dark lateral 

 stri|)e rich rufous or madder-brown. Under parts white, 

 shar|)Iy divided from colour on flaidvS and on pygal border. 

 Facial niarkin<i,s : central band deep rufous, light facial band 

 white, dark facial band blaekisii. Nose-spot blackish. Ears 

 very long, from inner lower angle to tip 140 mm., in dorcas 

 125 mm. 



Skull. — Long and low, with the brain-case flatter and witii 

 the J aiabola from crown to occiput less vertically inclined 

 than in dorcas. Basisphenoid more horizontal than \n dorcas. 

 Palatal surfaces of the maxilhiries in the region of the 

 palatine bones convex, but running into a central groove 

 anteriorly, being flattened out above the foramina into two 

 converging flanges, the gnathion being very line and con- 

 tracted. Premaxillaries nearly straight. Bullae small. 

 Upper alveolar row longer than in dorcas, with the molars 

 narrower. 



Horns shorter than in dorcas, evenly divergent from their 

 bases slightly outwards and curving backwards, the tips 

 being sharply crooked inwards in the form of a hook at a 

 right angle or less than a right angle. 



kSkulI-measuremenfs (in millimetres) of three adult male 

 specimens, those of the type being placed first : — 



Greatest length 174, 174, 1G7 ; occiput to nasals 95, 

 105, 95 ; orbit to gnathion 88, 88, 84 ; premaxillaries 55, 

 48, 53; vertical diameter of orbits 33, 33, 31 j depth from 

 lower margin of maxillary at centre of last molar to highest 

 point on interparietal suture 75, 75, 73 ; greatest width 

 across orbits 77, 77, 77 ; length of upper dental series 56, 

 56, 53; square measure of central molar 12x9*5, 12x9, 

 11-5 X 8-5. 



Hah. The shores of the Red Sea from Suakin northwards 

 and adjacent desert regions. 



Tiji^e. Ad. S , head-skin and skull, B.M. no. 11. 10.25. 6, 

 from Khorasot, Nubian Desert ; collected and presented by 

 W. B. Cotton, Esq. 



Gazella Uttoralis osiris, subsp. n. 

 Similar to G. Uttoralis but much paler in colour, in which 



