The Fly. 



109 



lu the crane-fly the balancers stand out well from the 

 body, and one can see plainly that their slender stalks are 

 borne on the last ring of the thorax. The large, high, 

 second ring of the thorax, tbe long abdomen and long 

 wings remind us of the dragon-fly, but the single pair of 

 wings and the prominent balancers show ns it can be 

 nothing but a fly, even without an examination of the 

 mouth-parts. 



Fig. 5. 



The large flies that mimic bees and are oommon aronnd plants, 

 are exeellent sabjeots for stndy after the bee has been taken. 



