HOMOPTERA. 



CICADIDyE. 



An instructive lesson can be given on the Cicada, 

 or harvest-fly (Fig. 78, nat. size). This insect is often 

 erroneously called the "locust," owing, probably, to 

 its habit of appearing in large numbers. The head 

 (Fig. 78, A) is broad and triangular, with the apex of 

 the triangle turned backward. It has two prominent, 



Fig. 78. 



widely separated eyes (ey) and three bright ocelli 

 (not clearly shown in the drawing). The large, light- 

 colored neck is entirely concealed, the chitinous head 

 being set firmly against the hard prothorax, so that 

 the cheeks and projecting eyes form a hollow on each 

 side for the reception of the coxae of the first pair of 



