Order UNGULATA. 



This is a large order containing the true ** hoofed " 

 animals, and excluding under the more modern and 

 generally accepted classification the Elephants and 

 Rock Rabbits. The digits of the forefeet never exceed 

 four in number, and the carpal and tarsal bones inter- 

 lock. There are no clavicles. 



There are three sub-orders, the Perissodactyla, con- 

 taining the Tapirs, equine animals and Rhinoceri ; the 

 Artiodactyla, containing the Pigs, Hippopotamidse, 

 ruminant animals; and the Lipoterna, embracing certain 

 extinct forms which need not concern us further. 



Sub-Oidei PERISSODACTYLA. 



This group contains the Rhinoceri, equine animals 

 and Tapirs (which last are not found in Africa). Middle 

 toe larger than the others ; this may be the only 

 functional digit, as in the case of the equines. Toes 

 of the hind foot never more than three in number. 

 Dorso-lumbar vertebrae 23 or more in the living forms. 

 Premolar and molar teeth in a continuous series with 

 massive crowns. Dentition frequently complete, viz., 

 incisors 3-3, canines 1-1, premolars 4-4, molars 3-3 = 44. 



Stomach simple ; gall-bladder not present. 



Family RHINOCEROTID.E. 

 Genus DICEROS. 



Large aud clumsy animals with thick skins almost 

 devoid of hairs, these being found only on the tail and 

 ears. Eyes extremely small for the size of the animal. 



