TEE ELEPHANT. 



271 



numerous largo air-cells (Fig- 307). Another remarkable 

 feature, from which the group takes its name, is the trunk 

 or proboscis, a long, thick, fleshy, flexible snout, growing 

 from the front edge of tlie nasal bones (Fig. 307, a). The 

 trunk ends in a finger-like, highly sensitive point, below 

 which are situated the nostrils. The brain has a large 

 cerebrum, with numerous convolutions, but more of the 



FlQ. 



-The hairy Mammoth. From NordensMold. 



cerebellum is exposed than in any of the succeeding orders; 

 in this respect and in the large incisors the Proboscidians 

 approach the Rodentia. 



In the nature of the limbs, especially from the fact that 

 elephants walk on their toes, a relation to the Ungulates is 

 indicated. They are five-toed, but the digits are repre- 

 sented externally only by the five broad, shallow hoofs, the 



