THE SQUIRREL FAMILY 181 



THE SQUIRREL FAMILY 



In order to avoid recognizing a large number of Families 

 for animals that are closely related, zoologists have agreed that 

 the Squirrel Family shall contain the marmots and a number 

 of other animals that are closely related to squirrels. To 

 make this point clear, observe this diagram: 



SQUIRREL FAMILY 

 (IN AMERICA) 

 Tree Squirrels .............. Sciurus. 



TRUE SQUIRRELS. 



Rock Squirrels Tamias, etc. 



Ground Squirrels Citellus. 



, T f Prairie-'* Dogs" Cynomys. 



MARMOTS < Tir , , , & ,/ 



( Woodchucks Marmota. 



FLYING SQUIRRELS Sciuropterus. 



All these creatures appeal strongly to persons who live in 

 the country, or visit city parks. Go anywhere in the tem- 

 perate zone, and you will find some of them, ready to greet 

 you, and make friends with you if you choose. You have 

 but to use your eyes, and you will see them. In the East 

 you have the gray squirrel and chipmunk; in the Mississippi 

 Valley the fox squirrel; on the Great Plains the ground 

 squirrels and prairie-' 'dogs"; in the West the Douglas squir- 



