UNDESCRIBED OAK-GALLS. 193 
Riddlesdown is, for the Lepidopterist, one of the nearest 
collecting grounds to London where may be obtained the chalk- 
hill species. It is perhaps not quite so good a ground as some 
others I hope at another time to refer to, but for all ordinary 
chalk species it is sufficiently good; besides the lanes and hedges 
in its neighbourhood providing many and some rare moths. 
When I resided at Norwood, in 1876, I gave it many trials, and 
never came home with empty pockets. 
Royal Aquarium, Westminster, July, 1879. 
UNDESCRIBED OAK-GALLS. 
By HE. A. OrmErop, F.M.S. 
THE accompanying sketches are of two apparently undescribed 
species of oak-galls: one, the bud-gall, is very plentiful in the 
neighbourhood of Isleworth; the other was gathered near 
Maldon. 
The bud-gall (which is figured both natural size and mag- 
nified) much resembles a stunted form of that of Aphilothrix 
collaris, but is much smaller, and remains to maturity buried in 
the bud scales. I have found it rather numerously in winter and 
spring; but as it does not make the slightest show externally, 
and the buds in which it is contained are not distinguishable from 
the others, I have only come on it accidentally during search for 
possible winter developments of details of gall-growth, and the 
gall-maker has been too much crushed to rear for definition. It 
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