164 



FARM FRIENDS AND FARM FOES 



There is room in these pages for a discussion of only a few 

 of the more important of these groups. 



PREDACEOUS BEETLES 



Among the notable foes of injurious insects the Pre- 

 daceous Ground Beetles (Carabidae) hold a high rank. 

 They are active, voracious beetles, having hard, flattened 

 bodies, strong legs, and large jaws. They hunt commonly 

 upon the ground or in trees and shrubs for caterpillars and 

 other insects that may serve as food. Cutworms, army 

 worms, gypsy moth caterpillars, and similar grass and leaf- 

 feeding larvae are especially likely to be caught by them. 



V 



GROUND BEETLES 



Many Ground Beetles are black in color, but a few are 

 greenish blue, and some are marked with golden spots. 

 Specimens are nearly always to be found beneath boards 

 or logs lying loosely on the soil surface. 



The larvae of most of these ground beetles are also pre- 

 daceous. They are very active, and are provided with 

 large jaws for catching and devouring their prey. 



The Tiger Beetles (Cicindelidae) are perhaps of less 

 economic importance than the Ground Beetles because they 



