PARTS OF AN INSECT. 



57 



seen on top of the head between the compound eyes, and 

 these are called simple eyes. 



A B C D E F G H 



FIG. 5G. ANTENNA OF VARIOUS KINDS OF INSECTS. 



A, Fly. D, Dragon-fly. G, Bug. 



B, Bee. E, Moth. H, Beetle. 



C, Green Grasshopper. F, Butterfly. 7, Beetle. 



In many insects, as in the dragon-flies for example, the 

 compound eyes are very prominent and cover the sides of the 

 head, enabling the insect to look backward as well as forward. 



FIG. 57. SHOWING COMPOUND AND SIMPLE EYES. 

 A, Head of Fly, natural size. 



JK, Head of Fly enlarged eight times; c, compound eye; , simple eyes. 

 C", Portion of the surface of a compound eye highly magnified. 



