122 



ZOOLOGY. 



may become the parent of millions of children and grand- 

 children. 



Fig. 152.— Seventeen-year Cicada, a, b, pupa; c, d, eggs. 



Fio. 153 — Apple Aphis. Natural size and en- 

 larged. 



Fig. 155— Case-worm, 

 a, case. 



Fig. 154.— Chrysopa and group of stalked eggs. 



Order 9. Neuroptera. — These are net- veined insects with 

 a complete metamorphosis, the chrysalis residing in a 



