206 



Bugs, Butterflies, and Beetles 



unless the cocoon is made in the fall, in which case 

 they sleep all winter in it and come out as beetles in 

 the spring. 



The Water Tiger has none of the appearance 

 of the beast from which it takes its name, but it is 

 just as blood-thirsty. Put some in your aquariums 

 and watch them as they go about seeking their 

 prey and gathering air to breathe. 



One of the most interesting facts about aquatic 

 insects — that is, insects which live in the water — is 

 their various ways of supplying themselves with 

 air. Take, for instance, the tribe known as the 

 Scavenger beetles. These beetles, when quiet at 

 the top of the water, keep their head uppermost, 

 as does a man. Some beetles reverse this position. 

 The predaceous diving beetles, those whose horny 



