192 STRUCTURAL AND SYSTEMATIC ZOOLOGY 



7. Insectivora are diminutive, insect-eating animals, 

 some, as the shrew, being the smallest of mammals. 



They have small, smooth brains, 

 which, as in the preceding or- 

 ders, leave uncovered the cere- 

 bellum and olfactory lobes. The 

 molar teeth bristle with sharp, 

 pointed cusps, and are asso- 

 FIG. ,8 3 .- shrew mouse (Sor**). c ^^ with canines and incisors. 



They have a long muzzle, short legs, and clavicles. 

 The feet are formed for walking or grasping, and are 

 plantigrade, five-toed, and clawed. The shrew, hedge- 

 hog, and mole are examples. 



8. Cheiroptera, or bats, repeat the chief characters of 

 the Insectivores ; but some (as the flying fox) are fruit- 

 eaters, and have corresponding modifications of the 



FIG. 184. Bat (.Vespertilid). 



teeth. They are distinguished by their very long fore 

 limbs, which are adapted for flight, the fingers being im- 

 mensely lengthened, and united by a membranous web. 



