630 UNGULATA. 



GENUS NANOTRAGUS. 



The nine species of this genus comprise the smallest members of the 

 family. They are all very much alike. The males have small, thin, up- 

 right horns, with a few rings or half-rings at the base. The head is 

 round, the nose pointed, and the muzzle small. 



The BLUE-BUCK, Nanotragus Hemprichii, is one of the most grace- 

 ful of Ruminants. " The most practised eyes," writes Drayson, " are 

 required to discover this buck in the bush, as its color is so similar to 

 the gloom of the underwood, that if it did not shake the branches in 

 its progress, it would be scarcely possible to see it. Long after the 

 sportsman has become sufficiently acquainted with bush-craft to secure 

 with certainty one or two red bucks during a day's stalking, he would 

 still be unable to bag the little Blue-buck. Several times when I was 

 with a Kaffir, who possessed eyes like thos.; of an eagle, he would point, 

 and with great excitement say, ' There goes a Blue-buck ! there he is ! 

 there, there ! ' but it was of no use to me, I would strain my eyes and 

 look to the spots pointed out, but could see no buck ; and it was a con- 

 siderable time before my sight became sufficiently quick to enable me to 

 drop this little antelope with any certainty." 



It is scarcely more than a foot in height, and about two feet long ; 

 and its color is a dark-blue, or mouse tint. It is found in Africa, south 

 of the Sahara. 



The sub-family Cephalophin^ contains two genera, one of which 

 inhabits Africa, and the other the hilly parts of India. 



GENUS CEPHALOPHUS. 



The Duyker-BOK, Cephalophus mergens, may be taken as the most 

 typical of the twenty-two species. It derives its name of Duyker or Diver 

 from the way in which it plunges into the bush. Drayson describes it 

 as follows : 



" On the borders of the bush, the antelope which is most commonly 

 met is the Duyker, a solitary and very cunning animal. If the sports- 

 man should happen to overtake this buck, it will lie still, watching him 

 attentively, and will not move until it is aware that it is observed. It 

 will then jump up and start off, making a series of sharp turns and dives, 



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