146 THE ENTOMOLOGIST. 
The gall is not deciduous, and the flies appear in March or 
April.—G. L. Mayr. 
Herr Kollar and Dr. Mayr both give Synergus melanopus 
as an inquiline of this gall. One specimen each of S. apicalis 
and Ceroptres arator have also been bred by Dr. Mayr from 
this gall, which has not occurred in Britain.—Z. A. Fitch. 
Fig. 28. 
APHILOTHRIX GEMM. 
28. Aphilothrix gemme, L. (C. fecundatrix, Hart.).— 
This gall, in shape not unlike the strobile of the hop or 
larch, grows in the axils of Quercus pedunculata, Q. sessili- 
flora, and Q. pubescens. It is about the size of a cherry, 
seldom as large as a small walnut. It consists of a much com- 
pressed axis, to which the more or less hairy elongate scales 
are attached, and appear more densely crowded. The outside 
and lower scales are oval or oval-triangular; those lying on 
the top or inside are lance-shaped or thread-like. The egg- 
shaped inner-gall is situate at the end of the short axis; 
generally the scales surround it so completely that it is not 
visible at all, or at any rate only the top of it is to be seen. 
The inner gall is hard; has, when fully developed, a length 
of eight to nine millemetres, is flattened at its base, and shows 
at the opposite (upper) extremity a small circular impression, 
on which rests a very small cone with a shining vertex. If 
hindrances occur in its regular development it sometimes 
happens that this imprint, though near the top of the inner 
oe 
