53 
Two or ay TO worthy of special mention came 
out during my observations. The first was the absence of the 
excessively hard as der penance maturity, somewhat resembling 
those of the Q. Ilex parent, the insect may find a difficulty in 
depositing its eggs. "The suggestion is only made in default of a 
better one, and may not have much foundation in fact, for the 
1 of N. numismatis was abundant. 
he second point of interest is that on Quercus pedunculata va 
granbyana the common spangle gall is invariably of a rigen 
blackish purple colour. It is true that a trace of similar colour 
foliage. The gall was also found on the yellow-leaved variety 
concordia, but [sse no difference of colour was observed. 
The third curious point relates to the acorn galls, produced by 
Callirhytis (Andricus) n um. These galls are abundant in 
certain years, and aitempts have been MCA to breed the insects. 
but always without success. The curious thing is that the larve 
remain apparently healthy for several years in succession, but 
refuse to assume the perfect state. E have repeated the experi- 
ment with the same result. Mayr and Miss Ormerod have 
noticed the fact, and Mr. E. A. Fitch sol jocibd some in 1878 
which were still living in 1881. Yet the gall appears annually, 
ARACHNIDA. 
ARANEIDEA (Spiders). 
By Rev. O. Pickard-Cambridge, M.A., F.R.S. 
Considering ni limited area of Kew Gardens, the followin 
list of 134 species of spiders found in it seems a very fair result 
of the efforts E ted to this branch of Natural History by 
Mr. Nicholson. I feel very little doubt, however, that 
many more species would rewa a collector who could 
ge p 
I may mention that there is a small fir plantation and rough 
heather enclosure of no more than two and a half acres in extent 
in my own district, where two of my sons, then small lads of 10 
