PLATE XXXTX. 



Galls caused by Ctnips Kollari. a. Attacked by the fungus Phoma 

 GALLORUM. B. A Specimen from which thirty-two inqiiilines have 

 emerged and one Ctnips Kollari ; their lioles are indicated by pins and 

 a match stick respectively, c. Specimens tenanted by parasites and 

 growth ai-rested thereby. d. A normal specimen for comparison, 

 e. Sections showing larva cells. 



Specimen a x 2^. b and c nearly nat. size. 



Adlard ^- Son, Impr, 



