MAMMALIA. 



245 



in Dr. Smith's " Illustrations of the Zoology of South 

 Africa," will show the very close resemblance in form. 

 In the typical specimen the horns are of equal length ; 

 in that from Abyssinia the front horn is 16 in. long, 

 the hinder 12f in. The first is nearly circular in section 

 throughout, being a little compressed above ; the latter 

 is much compressed, more sharply edged, behind than 

 in front. Half-way up it measures 2^ in. from front to 

 back, and 1^ in. across. 



The horns in the younger specimen measure — the 

 anterior 12 in. along the curve in front, or 11 in. 

 measured in a direct line from the centre of the base to 

 the tip, while the hinder horn is 7| in. in length. The 

 first is slightly compressed, having an oval section; 

 the two diameters half-way up being 1-8 in. and 1"4 in. 

 The hinder horn tapers suddenly below, and more 

 gradually above ; it is rather leas compressed than the 



