THE ENTOMOLOGIST. 
No. 131.] JULY, MDCCCLXXIV. [Price 6d. 
Descriptions of Oak-galls. Translated from Dr. G. L. Mayv’s 
‘Die Mitteleuropiischen Eichengallen’ by is: HuBERT 
HERKOMER née WEISE. 
III. Bup-GA..s, 
(On twigs that are two years old or more, or’on the trunks.) 
Cynips Hartigi.—This beautifully- 
shaped gall is dey eloped from grow- 
ing buds on the branches and stem 
of Quercus sessiliflora, chiefly on 
their under side: it appears as a half 
or three-quarter sphere of three centi- 
metres in diameter; it is of a dark 
brown colour, tinged with bluish 
white; it has numerous short conical 
projections, and is firmly attached to 
the branch at the base by a very short 
foot-stalk. On detaching this gall 
from the twig the bud-scales are 
always found. A section of this gall 
exhibits in the centre a hard, white, 
spherical, inner gall, about the size 
of a pea, which is attached to the 
twig by a short foot-stalk; it always 
contains a single larva-cell; an exte- 
rior surface is covered with many 
small rugosities and shallow furrows ; 
from.each of the little excrescences 
issues a brown (at first green) stalk, 
about one millemetre in diameter, and 
from three to four millemetres in 
length; this stalk gradually thickens Cyxmes Hantrar. 
VOL, VII. U 
Fig. 10. 
