50 Observations on Cynipidae. 



the male flowers developed in May following, delicate 

 little galls could be seen on these pricked buds, situated 

 either singly, or several together, on the pedicels of the 

 flower. I found the same galls on two different trees, 

 both of which had been pricked hy Aphilotrixfecundatrix. 

 I therefore felt satisfied that no mistake or deception 

 was possible. The galls, about to be described, were 

 evidently those of a species of Andricus. It is to 

 be observed that the Aphilotrix feciindatrix pricks by 

 preference, and perhaps exclusively, the flower buds of 

 Ouercus robur {pedunculata, Ehrh.). The reason for 

 its preferring this species of oak is probably because 

 it flowers about fourteen days earlier than Quercus 

 sessiliflora. 



[The artichoke or hop gall is found in July on Quercus sessiliflora, 

 Q. pedunculata, and Q. pubescens. 



Inquilines. Synergus nielanopus, S. evanescens, S. apicalis, S. vul- 

 garis, Aulax fecutidatrix. 



Parasites. Eurytoma signata, Syntomaspis caudatus, Torymus 

 regius {Callimome inconstans), Megastigmus dorsalis, Mesopolobus 

 fasciiventris, Olinx trilineata, and Entedon leptoneurus. The moth 

 Carpocapsa Juliana in the outer gall.] 



10^. Andricus pilosus. n. sp.^ 

 So far as I know this gall has not hitherto been 

 described. I have selected the specific name ^pilosus* 

 because it is covered with short hairs and these serve 

 to distinguish it from similar species. 



This elegant little gall is about 2 mm. in length, of an 

 elongated oval form, with a prominent apex, thin-walled, 

 green at first but when mature of a brownish colour, 

 covered with pale stiff" hairs. The galls are found 



[^ Andricus fecundatrix , sexual form, Cameron.] 



