ioo MINUTE MARVELS OF NATURE 



arva; issuing from 



holes and laid its eggs, the 

 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 



Anotlier in=ect liavon^t 



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 

 "rubs have finished ieedino-, this in noway incon- 



