OF THE LARVA STATE. 63 



avoid devouring any vital part, so that they may not 

 kill the caterpillar, as in that case it would be useless 

 to them for food. When full grown, they even eat 

 their way through the skin of the caterpillar without 

 killing it, though it generally dies in a few days, 

 without moving far from the place where the grubs 

 have spun their group of silken cocoons in which to 

 pass the winter."* 



THE EGGS AND THE LARVA OF THE MICROGASTER 

 GLOMORATUS. 



Fig. 3. the eggs, natural size ; Fig. 1. larva, natural size ; 

 Fig. 2. the larva magnified. 



THE PUPA OF THE MICROGASTER GLOMORATUS. 



Fig. 1. size of life; Fig. 2. magnified. 



THE MICROGASTER GLOMORATUS. 



Size of life. 



* Insect Transformations, p. 61. 



