ANTILOPIN^ 29 



more or less sublyrate or lyrate ; face-glands usually present, 

 smaller than in typical genus, but with same valvular 

 structure ; tail moderately or very short ; inguinal glands 

 generally present ; teats normally 2 ; feet differing from 

 those of Antilope by the hairy and thinner interungual web, 

 and the practically bare interdigital cleft; face-markings, 

 when fully developed, in the form of alternate light and 

 dark streaks. Skull usually with shallow lachrymal de- 

 pressions, and always three pairs of lower premolars (in 

 G. picticaudata the development of the first pair, according 

 to Pousargues, is retarded). 



The range of the genus includes western and central 

 Asia as far east as Mongolia and Kan-su, peninsular India, 

 and northern and eastern Africa. 



The genus may be divided into the following three 

 groups : — 



A. Tail typically -very short ; females hornless ; face with- 



out altemating dark and light stripes ; knee-tufts 



absent or rudimentary ; rump-patch well developed. . . . Procapra. 



B. Tail longer ; females usually horned ; face with or less 



developed dark and light alternating stripes ; knee- 

 tufts large. 



a. Size small or medium ; white of rump not 



intruding into fawn of body Gazella. 



h. Size large ; white of rump intruding more or less 



extensively into fawn of body Nanger. 



The '■' keys " to the species are given under the headings 

 of their respective subgenera. 



1. Subgenus PBOCAPRA. 



Procapra, Hodgson, Journ. Aaiat. Soc. Bengal, vol. xv, p. 334, 1846 ; 

 Pocock, Proc. Zool. Soc. 1910, p. 892. 



Tail very or comparatively short; rump-patch well 

 developed; face-glands obsolete or small, as are also the 

 lachrymal depressions for their reception, as well as the 

 glandular tufts on the knees. 



The group is restricted to Central Asia ; and its members 

 may be briefly characterised as follows : — 



