CHAP. XV. FAMILIES OF COLEOPTERA. 



93 



SUB-CLASS I. (Filicornes). 



The insects belonging to this Sub-class may be divided into 

 two Tribes, as follows : 



TRIBE L Predaceous Ground-Beetles. These insects are 

 most terrestrial in their habits, and usually prey upon other 

 insects ; the hind pair of trochantees are very - large, much 

 larger than in any other insects. 



These Beetles are divided into two Families, as follows : 



TIGER-BEETLES (Cicindelidze). These insects have the head 

 nearly vertical and wider than the thorax ; the antennaa are 

 inserted on the front, and the wing-cases are usuallv marked 

 with white and yellow. 



Fig. 240. 



Fig. 241. 



Fig. 242. 



Fig. 243. 



The larvae are provided with six legs ; they live in holes in 

 the ground, and feed upon caterpillars and other insects. The 

 Common Tiger-beetle (Fig. 240), the Generous Tiger-beetle 

 (Fig. 241), and the Virginian Tiger-beetle, (Fig. 242), are 

 examples of this Family. 



GROUND-BEETLES (Carabidas). These in- 

 sects have the head horizontal, or but little 

 inclined, and generally narrower than the 

 thorax ; the antenna? are inserted under 

 the sides of the front, and the color is 

 mostly black. 



The larva? are provided with six legs ; 

 they live in the ground, beneath logs, etc., 

 and feed upon other insects. The adults 



