146 On a neto Onhifrom the Galla Country, 



XI. — A new Orihi from the Galla Country to the North of 

 Lake Rudolf. By Gilbert Blaine. 



Ourebta gallarum, sp. n. 



An oiibi of large size, with long wavy hair and no trace 

 of a dark patch on the forehead. 



Colour of upper parts bright orange-fawn, richer along 

 the dorsal tine; the extremities of the hairs on the body 

 fading to cream, their bases being w^hitish. Forehead 

 orange-fawn, with no trace of a dusky patch between the 

 horns. Bases of the hairs on face, forehead, and down the 

 neck to the shoulders dusky grey, as in other oribis. 



Skull very large and massive, characterized by the 

 remarkable development of the bridge across the rostrum in 

 front of the orbits and the consequent great convexity of the 

 facial profile. Nasals depressed. Preorbital fossa3 large and 

 deep. 



Horns short and stout, annulated at the bases only, 

 inclined strongly backwards as in 0. montana. 



Skull-measurements: — Greatest length 180 mm.; basal 

 length 152; breadth 84; length of nasals 67; length of 

 frontal suture 47; vertical diameter of orbits 32; palatal 

 length 95 ; upper dental series 52. 



Hah. Lake Helene, one of a string of small lakes east of 

 the head-waters of the Omo River, and about 60 miles south 

 of Addis Abeba. 



Type. Adult male. B.M. no. 6. 11. 1. 58. Collected by 

 P. Zaphiro, and presented by Mr. W. N. McMillan in 1906. 

 (Described from a single specimen.) 



Comparative Table of Shull-measurements , to differentiate 

 this Species from O. cottoni and O. montana. 



O. gallarum. 0. cottoni. O. montana. 



mm. mm. mm. 



Greatest length 180 171 179 



Basal length 152 146 im 



Greatest breadth 84 77 77 



Length of nasals 67 61 71 



Length of frontal suture .... 47 50 46 



Vertical diameter of orbits . . 32 30 32 



Palatal length 95 91 102 



Upper dental series 52 50 62 



This oribi presents some very striking characters. In the 

 general shape and proportions of the skull it resembles the 



