458 MxKINE AGRICUI^TURAL EXPERIMENT STATION. I912. 



dormant. The developing larvae tlien feed externally upon the 

 caterpillars, becoming full fed before cold weather sets in. 

 Transformation's are completed in the spring, the adults leav- 

 ing the web nests 2 or 3 weeks after the catei'pillars become 

 active. 



Protection of the parasite. The same means may be used as 

 for M onodonotomerus only in this case the barrels should be 

 left longer before destroying the webs of the browntail cater- 

 pdlars. 



Pteromahis puparum. (Cholcidae) 



This little parasite was reared in large numbers from chrys- 

 aHds of the yellow edge butterfly on several occasions during 



Fig. 484. Pterorualus egrcgius. Greatly 

 enlarged. (After Howard and Fiske, 1911). 



July 1912. From a single chrysalid collected on the campus 

 of the University of Maine, 87 specimens emerged. Lot 15 16. 



Blachertes johannscni Crawford. , ( ChaJcidae) 



This species mentioned in Insect Notes for 1911 (p. 243, 

 Bui. 195 Me. Agr. Exp. Sta.) under the title of Blachertes sp. 

 has recently been described by Mr. J. C. Crawford in the Pro- 

 ceedings of the U. S. National Museum, Vol. 43, p. 181. 1912. 



Habrobracon- johannseni Viereck. (Braconidae) 



The species noted in Insect Notes for 1911 (p. 243, Bui. 195, 

 Me. Agr. Exp. Sta. ) under the name of Bracoii sp. has recently 



