36-1 



THE ANATOMY OF VERTEBRATED ANIMALS. 



anus and the vulva of the female are surrounded by a common 

 fold of integument. The clitoris has no bone. The body of 

 the uterus is divided by a longitudinal septum. 



11. The Probosaidea. — These are massive animals, walking 

 upon the extremities of the five toes, with which each foot i3 

 provided, and upon a great tegumentary cushion which uuitoa 

 these, and forms a flat sole behind them. 



Tlie nose is prolonged into a flexible proboscis, which is at 

 once a strong, and a delicate, organ of prehension. The hairy 

 covering is scanty in the recent species ; but there were abun- 



