g6 The Under-Water World 



Insects associated with water may 

 roughly be divided into three classes. 

 First, there are those that live in the 

 water during both their early and mature 

 stages ; second, are those that are 

 aquatic only during the earlier or larval 

 stage, and third, there are the inhabit- 

 ants of the surface that do not penetrate 

 into the depths. 



In speaking of the members of the 

 first group, as wholly aquatic, it does 

 not necessarily mean that they are un- 

 able to leave the water for varying 

 periods ; many of the beetles and water- 

 bugs fly at night from pond to pond in 

 search of fresh food supplies or when 

 hunting for mates during the breeding 

 season. 



Many of the orders and several of the 

 families into which the great class, 

 Insecta, is divided have representatives 

 that can be placed in one of the above- 

 mentioned groups. There are families 



