320 



AKTICULATA: INSECTA. 



FIG. 416. 



FIG. 415. 



FIG. 417. 



Tiger-Beetle, Cicindda 

 hirticollis, Say. 



Tiger-Beetle, Cicindda 

 vulgaris, Say. 



Tiger-Beetle 

 Larva. 



FIG. 418. 



dig vertical holes in the ground, in which they remain, the 

 head just fitting the entrance, and when any insect passes 

 near enough they seize it and devour it. 



The Predaceous Ground Beetles or Carabidse are also 

 rapacious, and are known as Caterpillar Hunters (Fig. 414). 



The Dytiscidse are fitted for a residence 

 in the water, and these have their hind legs 

 specially fitted for swimming. They are 

 also exceedingly rapacious, both in the larva 

 and in the adult state, devouring all kinds 

 of small aquatic animals, even fishes. 



The Gyrindse are found moving in all 

 sorts of curves and gyrations on the smooth 

 surface of standing waters ; and these too 

 sw^im by means of the fringed hind legs. 



Some kinds, as the Car- 

 rion Beetles or Silphidse, are 

 true scavengers. Living to- 

 gether in great numbers, 

 they perform a most useful 



FIG. 419. 



Water-Beetle, 

 Dyfiscus. 



Flu. 4'2U. 



Carrion-Beetle, Silpha. 



service in removing noxious 

 substances. Some species of 

 this family have the habit 



Kove-Beetle, 

 Stapkyhnus. 



