200 MINUTE MARVELS OF NATURE 



holes and laid its eggs, the larvae issuing from 

 the latter are nourished at the expense of the 

 caterpillar, which has an enormous appetite, 

 but gets thinner and weaker, while its boarders 

 get plump and healthy. Finally, when the 



Fig- J 33- Another insect bayonet 



caterpillar has completely exhausted its re- 

 sources, the young" ichneumon grubs are ready 

 to become chrysalids before their future winged 

 state. If it should happen that the mother ichneu- 

 mon fly has selected a caterpillar that is somewhat 

 developed, so that it requires to go into the pupal 

 or chrysalis stage before the young ichneumon 

 grubs have finished feeding, this in noway incon- 



