250 



INSECT LIFE. 



flies, of which many species occur in this country. 

 They are of a fulvous color, heavily marked with 

 black. Each species varies considerably in mark- 

 ings, and different species re- 

 semble each other quite close- 

 ly, making this a difficult 

 group for the beginning stu- 

 dent. Fig. 222 represents a 

 common species. 



The Fritillaries. — The 

 fritillaries (frit'il-la-ries) is a 

 group of butterflies including species varying from 

 a little below to somewhat above medium size. The 

 color of the wings is fulvous, bordered and check- 

 ered with black ; the lower surface of the hind wings 

 is often marked with curving rows of silvery spots. 

 The larvae feed upon the leaves of violets. Fig. 223 

 represents a common species. 



Fig. 222. — A crescent-spot. 



Fig. 223. — A fritiilary. 



The Angle-wings. — To this group belong many 

 of our best-known butterflies. With these the outer 



