266 



THE ENTOMOLOGIST. 



parenchj'ma, closely adherent to the wall of the contained 

 larva-cell, which is situated near the basal attachment of the 

 gall; the wall of the larva-cell is of a yellowish white colour. 

 The gall attains its maturity late in the autumn, but is not 

 deciduous. When keptin-doors during the winter the perfect 

 insect emerges in April, but in the open air it does not make 

 its appearance until May or June. — G. L. Mayr. 



Fi". 20. 



Cynips conglomeeata (and in section). 



20. Cynips conglomerata. — This gall generally occurs in 

 clusters on dwarf bushy plants of Quercus sessiliflora and 

 Q. pedunculata, and less commonly on similar plants of 

 Q. pubescens. Each gall is about the size of a large pea, 

 and, especially when solitary, is spherical in form, but when 

 a number are clustered together, and appressed to one 

 another, the sides of each separate gall become flattened 

 where they meet, and the galls often become somewhat 

 confluent at the base : in such instances they frequently 



