32 THE ZOOLOGIST. 



of Asia, the Deer of South America, Wild Pigs, and Rhinoceroses, 

 ancient and modern. None of these chapters are exhaustive, and 

 some of them are even meagre in their details. Perhaps the best 

 of them is that on African Antelopes, and this is fairly well 

 illustrated. 



Fig. 1. — Head of Sable Antelope, Hippotragus niger. 



We give here, by permission of the publisher, two of the 

 heads figured, namely (Fig. 1), head of the Sable Antelope, 

 Hippotragas niger, and (Fig. 2), head of the Waterbuck, Cobus 

 ellipsiprymnus. 



The great variation in the shape and curvature of the horns 

 in the African Antelopes is very remarkable, and has led to 

 considerable difficulty in the way of systematic classification. 

 As a rule, they are more or less lyrate in shape, with a sub- 

 circular cross-section, and an upward direction. They may, 



