ANTILOPIN^E 41 



6. Face-markings distinct ; size larger. 



a 1 . White area on buttocks larger; forehead 



and muzzle rufous G. yarlcandensia. 



b l . White area on buttocks smaller ; forehead 



greyish, muzzle white G. seistanica. 



B. Females horned ; no goitre in males ; white area 

 on buttocks usually smaller. 



a. No puffy elevation on nose. 



a 1 . Forehead white G. marica. 



b\ Forehead coloured. 



a 2 . General colour very pale, flank and pygal 

 bands practically obsolete; horns long 



and slender G. leptoceros. 



b 2 . General colour darker ; horns shorter 



and stouter. 

 a s . Flank-band generally more or less 



indistinct, never wholly black. 

 a 4 . A more or less distinct nose-spot. 

 a. 5 . Flank -band, pygal band, and nose- 

 spot faint and ill-defined ; coat 

 smooth. 



a 6 . Size larger ; forehead light 

 rufous, lips and tip of muzzle 

 whitish ; horn -tips slightly in- 

 turned G.fuscifrons. 



6 6 . Size smaller ; forehead and 

 muzzle dark rufous; horn-tips 



not perceptibly inturned G. bennetti. 



b 5 . Flank-band, pygal band, and nose- 

 spot much darker. 



a. Coat rough ; horns nearly 



straight. 



a 1 . Size larger (26-7 in. at shoul- 

 der) G . cuvieri. 



b l . Size much smaller G. gazella. 



b. Coat smooth. 



a 2 . Size larger (24-5 in. at shoul- 

 der) ; horn-tips not inturned G. arabica. 



6*. Size smaller (21-2 in. at shoul- 

 der) ; horn-tips strongly in- 

 turned G. muscatensis. 



b*. Nose-spot variable, often absent. 



a. Nose - spot usually present ; 



general colour rufous fawn; 

 flank - band dusky rufous ; 

 horns short, with tips hooked 

 inwards; size smaller G.littoralis. 



b. Nose - spot usually absent ; 



general colour sandy fawn ; 

 flank-band indistinct ; horns 



