102 



FIRST LESSONS IN ZOOLOGY. 



The Cicada and its allies, with the Aphidae or plant-lice, 

 have clear fore- wings, but otherwise do not essentially dif- 



FIG. 109. Chinch bug. o, b, egg; c, e, larva; /, g, pupa. 



fer from the true bugs. The seventeen-year Cicada (Fig. 

 110) lays its eggs in holes in oak twigs (Fig. 110, d) by means 



FIG. 110. 17-year Cicada, c, eggs; a, 6, pupa. 



of a stout saw or ovipositor in the end of its body, while 

 the males alone have under their wings, at the base of the 



