100 



THE bee-keeper's GUIDE; 



longed banquet, the wonderful transformation from the slug'- 

 gish, worm-like larva, to the active, bird-like imago is accom- 

 plished. Sometimes the pupa is surrounded by a silken 

 cocoon, either thick, as the cocoon of some moths, or thin and 

 incomplete as the cocoon of bees. The cocoon is spun by mov- 

 ing the head back and forth. The liquid thread quickly dries, 

 and is drawn forth as the head moves. These cocoons are 



Fig. 39. 



Development of the Bee, after Duncan. 



a b Eggs. g Pupa. 



c def Larvae. k Caps. 



i Qucen-ccU. 



spun by the larvae as their last toil before assuming the restful 

 pupa state. The length of time in the pupa stage varies from 

 a few days to as many months. Sometimes insects which are 

 two-brooded remain as pupa.' but a few days in summer, while 

 in winter they are moths passing the quiescent period. Our 

 cabbage-butterlly illustrates this peculiarity. Others, like the 

 Hessian-fly and coddling-moth, remain through the long, cold 

 months as larva:. How wonderful is this ! The first brood of 



