THE ENTOMOLOGIST. 



Vol. XI.] JULY, 1878. [No. 182. 



DESCRIPTIONS OF OAK-GALLS. 



Translated from Dr. G. L. Mayr's ' Die Mitteleuropaischen Eichengallen.' 



By Edward A. Fitch. 



(Continued from p. 136.) 



Fig. 87. — Galls of Andricus Schlechtendali of the natural size on the 

 catkin, and magnified. 



87. Neuroterus Schlechtendali, Mayr {Andricus bur- 

 gundus, Scblechtendal). — This very small gall is to be found 

 in May, during the blooming time of the oak, on the catkins 

 of Quercus sessiUJiora, Q. pedunculata, and Q. pubescens. 

 It consists of a greenish yellow swelling of the stamen and 

 connective, in such a manner tliat the divisions of the bloom 

 become more crowded below, less above, or not separated. 

 The stamen mostly attains to a diameter of 1 millimetre, or 

 somewhat over; the chamber is, in the mature gall, surrounded 

 by a moderately hard siiell, as an inner gall, on which the 

 succideni part of the gall lies after withering. After the 

 general fall of the catkins, when their stalks become quite 

 withered, some generally remain on the tree : it is on these 

 that many examples of this gall, which are still green, 

 are to be found ; and it is about this time that the galls 

 themselves fall to the earth, so that if we now shake a tree 



