THE ENTOMOLOGIST. 



No. 156.] 



JUNE, MDCCCLXXVI. 



[Price OcI. 



Descriptions of Oak-cjnlls. Translated from Dr. G. L. Mayr's 

 ' Die Mitleleuropaischen Eicliengallen ' by E. A. Fitch, Esq. 



(Continueil from p. 117.) 



1\ ^; 





Fig. 48. — Dkyophanta scuiellaris (and iu section). 



48. Dryophania sciitellaris, Oliv. {Cynips foUi, Hartig, 

 Schenck, Schlechtendal). — The gall of this species, which is 

 universally known and to be met with throughout Europe, is 

 large, juicy when recent, and spherical. It appears on the 

 under side of the leaves of Quercus sessiliflora and Q. pedun- 

 culata; it only adheres to the leaf in one spot, which is the 

 reason it does not show on the upper side. It varies in size 

 from one to two centimetres in diameter, and is of a green, 

 yellow, or — if exposed to the sun — red colour; its surface is 

 either smooth or more or less covered with small papillae. 

 Even when dry the gall somewhat resists the dividing knife ; 

 however, it exhibits in section no actual inner gall, only a 

 spongy, loose, gingerbread-like parenchyma, which contains 



VOL. IX. K 



