174 



THE LIFE OF AN INSECT. 



clear and purling waters roll smoothly on above 

 them. Their little under-water cells are shown 



in the cuts, together 

 with the larva. 



Their organs for 

 breathing the water, 

 if the expression, 

 which is in some 

 measure correct, may 

 be admitted, are 



Cels of May-fly Larva. ^^ ^ ^ ^ 



of a fish. But instead of forming a part of the 

 structure of the mouth and head, as those of 



the fish, in the larva 

 they are placed 

 along its body, and 

 are arranged in 

 pairs. A delicate 

 little air-tube en- 

 ters into each of 

 these gills, and 

 there branches out 

 into a great many 

 directions; this tube 



Lur.a an* tecttonoj its cell. COnnCCtcd with 



