92 



PROCEEDINGS ENTOMOLOGICAL SOCIETY 



In table I the total number of eggs parasitized by the 4 species 

 of parasites is given. 



Thus, out of a total of 10,926 eggs of Datana integerrima contain 

 tained in 22 egg-masses only 3924 larvae emerged, or 36.+ percent, 

 while parasites emerged from 6365 eggs, or 58.+ per cent, and 637 

 eggs, or 5.+ per cent, failed to disclose either larvae or parasites. 

 Among these many contained dead parasites, as revealed by dis- 

 section. 



TABLE I. Record of parasitism of eggs of Datana integerrima, September and 



October, 1907. 



In table II is given the record of emergence of each species of 

 parasite from 16 egg-masses of the host. In this table each species 

 is designated by letter, A is Telenomus sphingis Ashm. ; B Tricho- 

 gramma minatum Riley; C Ooencyrtus sp., and D an undescribed 

 species of the genus Baryscapus. The number preceding the 

 letter indicates the number of individuals which appeared. 



In table II it will be observed that many of the egg-masses were 

 parasitized by two or three of these species and in one case speci- 



