INSECTS. 



331 



hemiptera by its general features, but it lacks the very 

 peculiarities which give the name to the order ; its upper 



FIG. 291. 



LOCUST (Pachytylus migratorius). 

 FIG. 292. 



HOUSE CRICKET (Gryllus domesticus).a, full-grown larva ; 6, pupa ; c, 



insect. 



perfect 



wings are as delicate and transparent as the lower 

 ones. The female has at the extremity of the abdomen 

 a borer, which is used in piercing the bark of trees, in 



