THREE AFRICAN MAMMALS. 



959 



and Mr. "Ward informs me that such heads as he has mounted 

 indicate a relatively small animal, with horns inferior in size to 

 those of the Eastern and the Southern Rhinoceroses, and a skin 

 with a somewhat different epidei^mal structure. 



According to modern views in i-egard to nomenclature, the 

 Somali Rhinoceros already has a scientific name, since it is re- 

 ferred to by Count Joseph Potocki on page 82 of his work entitled 

 'Sport in Somaliland,' London, 1900, as Bhinoceros bicornis 

 somaliensis ; and although no description was published at the 

 time, the accompanying plates apparently render the name valid. 



Text-fig. 192. 



Front (A) and side (B) views of skull of Nigerian Klipspringer. 



Of the two skulls presented by Mr. Drake-Brockman, one is 

 that of a subadult animal, with the whole of the permanent 

 dentition in use, and almost perfect, although the tip of the pre- 

 maxillte is broken off. The other, which is considerably more 

 imperfect, is that of a younger animal, with the upper premolars 

 only just coming into wear. 



Compared with a skull of Rhinoceros bicornis from East Africa 

 (B.M. No. 7.2.26.1)* (text-fig.^191), of somewhat greater age than 

 either of the Somali specimens, the latter are seen at once to 

 differ by the narrower form of the whole upper surface, both at 

 the interparietal constriction and at the orbital expansion. The 

 boss for the front horn is also much less expanded in the Somali 

 skulls, and there is less convexity in the region immediately behind 



* I am fully aware that this is not the type locality of the species. 



