﻿U. S. NATIONAL MUSEUM 



PROCEEDINGS. VOL. 102, PLATE 17 



14 



15 





%l 





perfuivum 



13, Dryocosmus mmusculus on Quercus agrifolia; 14, Callirhytis hopkinsi on Q. imbricarta; 

 IS, Andricus prescotti on Q. suhturhinella; 16, Andricus brunneus on (?. ^Mmoja; 17, 

 Diplolepis terrigena on iJo/a sp.;^ 18, Andricus crenatus on <?. ^wmo/a and Q. douglasii; 

 19, /^K^roM piUus on g*. subturbinella; 20, Trichoteras perfulvum on g. chrysoUpis; 21, 

 Callirhytis furva on jj. palustris; 22, Callirhytis cistella on (?. ^woryt. 



