xvi INTRODUCTION 



the specimens presented to the Museum by Mr. Hume in 

 1891, as these respectively form the types of two races. 



The synononay of the various species and races included 

 in the Catalogue makes no pretence to be complete, but is 

 merely sufficient to explain complicated points in nomen- 

 clature and to indicate to the reader where to refer to 

 descriptive accounts of the various species and races. Brief 

 descriptive notices of the species and races have been 

 introduced where it appeared desirable. 



Unless the contrary is stated, the heads and horns 

 pertain to male animals. 



It may be mentioned that the technical names employed 

 in this Catalogue are mainly based on priority, and that in 

 several instances they differ from those used by the late 

 Dr. Blanford and by the author in other' works. 



All the illustrations are from specimens in the collection 

 described. 



E. LYDEKKEE. 

 February, 1913. 



