120 VEETEBRATA: MAMMALIA. 



Their teeth vary in number from 30 to 38 ; the canines 

 are always present ; and in most species the molars have 

 numerous sharp points. The Chiroptera, together with 

 the three succeeding orders Insectivora, Rodeiitia, and 

 Edentata have the brain smooth, that is without convolu- 

 tions. 



FIG. 129. 



Hoary Bat, Lasiurus pruinosus, Say. 



All of our common bats (Fig. 129), as well as the Vam- 

 pires of tropical America, feed upon other animals ; and 

 all excepting the Vampires, which are believed to suck 

 the blood of the larger mammalia, feed upon small ani- 

 mals, mainly insects, which they capture while flying. 

 Hence all these bats have been called Animalivora or ani- 

 mal devourers, a group equivalent to the sub-order of 

 INSECTIVOROUS Bats. 



On the contrary, the Kalong Bat of Java having a 

 head like that of a fox, and an expanse of wings of more 

 than four feet ! and other similar bats of India and 

 Africa, feed wholly or partly upon vegetable food, and 

 hence are called the FKUGIVOKOUS Bats. 



SUB-SECTION XI. 

 THE ORDER OF INSECTIVORA OR INSECT-EATERS. 



The mammalia of this group feed wholly upon worms 

 and insects, and hence are called the Insectivora. Thus 



