256 



ANNUL AT A. 



Our type, the cockroach, belongs to this order and with 

 it is a remarkable series of forms, of which we can merely 

 mention the most important. The earwigs have the gona- 

 pophysis formed into pincers and live mostly in flowers. 

 The grasshoppers and locusts are large types with powerful 

 hind legs ; in tropical countries great devastation is caused 



Fig. 178. — The Grasshopper (Locusia 

 viridissima). 



by swarms of the migratory locust. The mole-cricket has 

 the habits and many of the structural peculiarities of the 

 mole. The stick- and leaf-insects exhibit remarkable pro- 

 tective resemblance. 



Fig. 179. — A Group of Hemiptera (Water- 

 Bugs) in natural surroundings. 



On the left is the long Rnnatra linearis ; on the right 

 are two Water-Scorpions (Nepa cinerea) ; and in the 

 centre is the Water-Boatman (Notonecta glmica). 



