1874.] SIR V. BROOKE ON A NEW GAZELLE. 141 



2. On a New Species of Gazelle living in the Society's 

 Menagerie. By Sir Victor Brooke, Bart v F.Z.S. 



[Beceived January 14, 1874.] 



(Plate XXII.) 



The Society has lately received from Muscat* a pair of Gazelles 

 (male and female), which differ distinctly from the Gazella arabica 

 of Hemprich and Ehrenberg, of South-western Arabia. This species, 

 at the time I read my paper ou this group (P. Z. S. 1873, p. 535), 

 I believed to be the only representative of the genus Gazella found 

 in Arabia to the south of 28° N. lat. 



Horns of Gazella arabica. 



Instead of the massive, nearly straight, non-lyrate horns of Gazella 

 arabica (see figure)|t, the horus of the Muscat Gazelles are rather 

 slender, compressed from side to side, and distinctly lyrate, their 

 points being turned boldly forwards and inwards, the form being 

 thus excluded from the non-lyrate subsection b' of my analytical 

 list {I. c. p. 537), which contains Gazella arabica, and placed in 

 the subsection a, which contains the species with lyrate or semi- 

 lyrate horns. 



In their general appearance, also, the Muscat Gazelles differ 



* [The male was presented by Major C. B. Evan Smith, 15th August, 1873. 

 The female was deposited by Mrs. Harris,|26 September, 1873. — Ed.] 



t See also the specimen from Mocha figured by Mr. Blanford (Geol. and Zool. 

 Abyss, p. 261, pi. i. fig. 3). 



