954 THE ENTOMOLOGIST. 
important specific characters than the female. A subsequent 
correspondent, ‘Anglo-African, in the ‘Field’ of October 
17th, 1874, speaks of this spider being also found in another 
locality ; but his description of the nest, its great length,— 
two feet six inches,—and its situation, show that it belongs 
to a much larger spider, and one of quite a different genus, 
probably to an undescribed species of Nemesia or Cteniza.— 
O. P. Cambridge; Bloxworth Rectory, August 20, 1875.” 
I trust that the interesting subject of trap-door.spiders 
burrowing in the bark of trees, or at any rate utilizing the 
fissures of bark for the purpose of constructing their silken 
domiciles, will claim the attention of our correspondents in 
South Africa, and especially of the Messrs. Woodward, who 
have already done so much to illustrate the Natural History 
of these little-known regions. 
Epwarp NEWMAN. 
Descriptions of Oak-galls. Translated from Dr. G. L. Mayr’s 
‘Die Mitteleuropiischen Eichengallen’ by KE. A. Fircu, Esq. 
(Continued from p. 172.) 
30. Aphilothrix globuli, Hart.— 
This green spherical gall is found in 
the terminal or axillary buds of Quer- 
cus pubescens (and probably also of 
other oaks); one-half or more of the 
_ gall is covered with the bud-scales, 
Y) and has a diameter from 8 to 4'3 milli- 
metres. At the point opposite the 
base there is a wart (or a blunt cone) 
of a yellow or rusty red colour. The 
naked green surface of the gall is soft 
when fresh, and shows a sappy sub- 
stratum, which, however, dries up in 
the autumn, and produces on the still 
green surface reticular plications or 
APHILOTHRIX GLOBULI. 
In situ: a, detached; b, mag- ; . . 
"nified. | * wrinkles. Inside the soft layer is the 
woody inner gall, which contains a 
larva-cell. The surface of this inner gall exhibits reticular 
rings. According to Hartig the fly emerges in the month of 
February.—G. L. Mayr. 
