THE ENTOMOLOGIST. 
Nos.136 &137.] DECEMBER, MDCCCLXXIV. [Price 1s. 
Descriptions of Oak-galls. Translated from Dr. G. L. Mayr’s 
‘Die Mitteleuropdischen Eichengallen’ by Mrs. HuBERT 
HERKOMER née WEISE. 
19. Cynips Lignicola.—This gall, Fig. 19, 
which is extremely abundant in 
Austria and Hungary, is usually 
developed from the axillary buds 
of Quercus sessiliflora and Q. pe- 
dunculata, and sometimes, although 
less frequently, from terminal buds 
also. It is generally rather larger 
than a pea, measuring more than a 
centimetre in diameter; but we 
have occasionally met with speci- 
mens no more than five millemetres 
in diameter. It is of a spherical 
form, and usually of a ferruginous- 
red colour, less commonly brown- 
yellow or blackish red-brown: it is 
enclosed in a hoary encasement, 
which, however, is wanting in some 
parts, having been ruptured by the 
enlargement of the gall. In other 
specimens, especially larger ones, 
portions only of this hoary encase- 
ment remain at the base of the gall, 
in which case certain markings, Oynrps Tientcorna. 
usually concealed beneath the mar- 
gin of the encasement, become visible. The interior of the 
gall consists of a tolerably hard, rust-coloured substance or 
VOL. VII. 2M 
