CLASS MAMMALS. 



353 



348. The Moles (Insectivora) . This is a small group, 

 consisting of moles and shrews. They are burrowing 

 forms. The shrews are small and very like mice in 

 appearance. They live on grubs and worms in the soil 

 and not on the vegetation, as so many believe. They 



FIG. 151- Flying fox (Pteropus). U. S. Dept. Agriculture Year-Book, 1898. 



Questions on the Figure. What is the structure and arrangement 

 of the wings in such a form as this? To what order of mammals 

 does it really belong? Why is the common name misleading? 



frequently tear up the turf, however, in making their 

 tunnels and thus do injury to the vegetation. Their eyes 

 are small and set deep, and are often quite rudimentary. 



349. The Bats (Cheiroptera, Fig. 151). There are some 

 400 species of bats. They fly by means of a fold of the 

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