IV] 



FROM WATER TO AIR 



29 



lengthwise down the back, and the head and thorax 

 of the imago are freed from it (fig. 8), then the 

 legs clasp the empty cuticle, and the abdomen is 

 drawn out (fig, 8 b, c). After a short rest, the newly- 

 emerged fly climbs yet higher up the water-weed, 



a 



Fig. 8 a, b. Dragon-fly (Aeschna cyanea). Two stages in emergence 

 of fly from nymph-cuticle. From Latter's Natural History. 



and remains for some hours with the abdomen bent 

 concave dorsalwards (fig. 8 d\ to allow space for the 

 expansion and hardening of the wings. For some 



