192 



APHIDES, SCALE INSECTS, ETC. 



wirged." The long-legged insects known as water- 

 measurers, which we see skimming about on the 

 surface of ponds, and the Water Boatmen, which by 

 the help of their long oar-like front legs sweep through 

 the water like insect skiffs, are common examples ot 

 the water frequenters of this division. 



The Plant Bugs sometimes do harm by sucking the 



Fig. 148. — Mole Cricket.* Eggs, larva of two ages. 



juices of plants, especially the Lypvs {PJii/tocoris} 

 solani, which attacks Potatoes; but they are, so far as 

 I am aware, rarely injurious in this country to any 

 serious extent. 



Some kinds, of a longer narrower shape, are to be 

 found on Wheat and Barley. The Wheat Bug (Miris 

 iritici) has also often been found on Grass in marshes; 

 the Barley Bug (31. flolahirtivs) is exceedingly common 

 in Barley, and on flowers of Grass near (see Fig. 147). 



* The Mole Cricket is one of the Orthoptcra, and sometimes does 

 much haim by feeding on roots both of Grass and other plants. 



