DEVELOPMENT OF COPIDOSOMA GELECHI^E. 



349 



they would not be able to parasitize the normal or spring eggs of 

 Gnorimo schema. Copulation, however, takes place immediately 

 after the adults emerge, but the females do not parasitize the 



TABLE II. 



TABLE SHOWING VARIATION IN LENGTH OF LARVAE IN THREE LOTS OF 



COPIDOSOMA. 



fall eggs of this moth. Only on one occasion has an attempt to 

 ovipost in such eggs been observed. In this instance the few 

 females which made the attempt were not able to penetrate the 

 shell of the egg with the ovipositer. 



4. The Abortive Embryos. 



One of the most interesting discoveries made in connection 

 with the study of Copidosoma is what we shall call the abortive 

 embryos or larvae, to which brief reference has already been 

 made. Abortive embryos occur in the development of many 

 different species of both invertebrates and vertebrates. They 



