ii4 THE NATURE-STUDY REVIEW [a :3 -march, .906 



Figitidre, including the parasitic species. Only about a score of par- 

 asitic Cynipoids are yet known in this country, while over 200 gall- 

 making species and guest species are known. 



To collect gall-flies the galls should be gathered especially in the 

 autumn, for with the end of the growing season the larvae are mostly 

 full grown and ready to pupate. They should be separated accord- 

 ing to kind, those of each kind being put into small closed bags of 

 fine-meshed bobinet or tarlatan. In these the various gall-flies, 

 iniquilines, commensals of other orders, and the parasites will issue, 

 and may be thus identified with their proper gall. 



