LOCUSTS AND GRASSHOPPERS. 



97 



In collecting grasshoppers one often finds the young 

 which are without wings, and others with wings just be- 

 ginning to grow out. It will be seen, then, that the young 

 grasshopper differs only from the old ones by having no 

 wings. There is no great change, such as marks the life- 



V . 



FIG. 103. Rocky-Mountain locust laying its eggs (c) one by one, forming an oval 

 mass (e). (All natural size.) After Riley. 



history of a butterfly. Perhaps it is by reason of their in- 

 complete metamorphosis, the general uniformity of their 

 habits, and their living on vegetable food, that Orthoptera 

 are not numerous in species compared with the beetles and 

 higher orders. 



The locusts and grasshoppers lay 

 their eggs in packets in the ground 

 (Fig. 103). With its ovipositor, 

 which is made up of three pairs of 

 spines, the two outer pairs very large 

 and stout, the locust thrusts its hind 

 body deep into the earth and deposits 

 its eggs one after another. 



Many dangers attend the life of 

 these insects. To overcome or to FIG. 104. Leaf -insect 



. , , , i-i urn). (Half natural size.) 



avoid them, many kinds, as certain 



katydids, the leaf-insects (Fig. 104), and stick-insects, 



7 



