•20-2 



THE KNTOMOLOGIST. 



The five specimens still in my possession all turn out on 

 examination to be males. These are approximately one- 

 sixteenth of an inch in length ; head, body, and abdomen 

 dark brown ; tibia and tarsi yellowish brown, with femora of 

 the two hinder pair of legs of a darker colour, and the 

 antennae of a full brown, darker towards the apex ; wings 

 colourless throughout, with slightly tinted brown nervures. 



The figure given (Entoui. x. 43) represents the gall in the 

 most perfect state as then found, free from the protecting 

 processes which had gradually fallen. Fig. 1 now gives a 



Fi£ 



Fit;. 1. 



Fig. :i. 



magnified view of the gall cluster in its healthiest and most 

 vigorous form amongst the scales, young leaves, stipules, and 

 stipule-like processes in the axils of the successive leaves 

 along the shoot; these clusters usually consisting of about 

 three galls placed separately, but occasionally adnate to each 

 other; ovate-obtuse in shape, but somewhat flattened on 

 one side; the wall of the single-chambered cell flexible and 

 llocculent outside : when examined under a moderately 

 powerful magnifier the galls may be found (as in the figme) 

 placed at intervals along an abortive stalk, each with one 

 or more stipule-like jirocess at its base. 



The appearance of this gall has hitherto been entirely 

 limited to one tree of Turkey oak, and a very few specimens 

 ((bund in 1876) on a Lucoml)e oak, also at Kew ; and it is 

 somewhat singular that acorn-galls, of which figures are 

 given (figs. 2, 3), should occur on these two individual trees, 

 and, as far as has at present been observed, on no others. 



