256 ANNULATA. 
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 (Locusta 
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 Ravatra lnearis; on the right 
are two Water-Scorpions (Neda cinerea); and in the 
centre is the Water-Boatman (Notonecta glauca), 
