PARTS OF AN INSECT. 



57 



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

 these are called simple eyes. 



A BODE F G 



Fig. oG. — ANTEHN.E OF Various Kinds of Insects. 



A, Ply. Z>, Dragon-fly. G, Bug. 



B, Bee. F, Moth. H, Beetle. 



C, Green Grasshopper. F, Butterfly. I, 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. 



^ , 



Fia. B7.— Showinh Compound and Simple Eyes. 



A, Head of Ply, natural size. 



B, Head of Ply enlarged eight times; e, compound eye; «, staple eyes. 

 O, Portion of the surfeoe of a compound eye highly magnified. 



