APPENDIX. 



The Early Stages of Ichneumox Parasites. Ganin has 

 shown that certain Froctotrypidce (Platygaster, Polynema, 

 Teleas and Ophioneurus) ^ the larvae of which live in the eggs 

 as well as the larvte of other insects, pass through a series of 

 remarkable changes, heretofore unsuspected, before assuming 

 the final and more normal larval state. He compares these 



Fig. 052. 



md 



Devplopmont of Platygaster. 



changes to the hyper-metamorphosis of Moloe and Sitaris (see 

 p. 478). The ovary of Platygaster diflfers from that of otlier 

 insects in that it is a closed tube or sac. Hence it follows 



(703) 



