144 BRITISH OAK. GALLS. 
Undetermined gall on Q. Ilex. 
Position of gall.—On the cupules of Q. Ilex. 
? From the Isle of Wight. 
The specimens on Plate LXI, div. B, were among 
a number of galls sent to me for identification from 
Chadwick Museum, Bolton, in 1902,-and were kindly 
presented to me by the Curator, W. W. Midgley, Esq. 
A label attached to them stated that they were from 
the Isle of Wight, but the collector’s name was not on 
it, nor the locality in which they were found. There 
is therefore some doubt whether they are indigenous. If 
they did grow there, probably more specimens might 
be found in the island now, and perhaps on the con- 
tiguous mainland also. 
They appear to have been gathered before they were 
mature. 
The cupule is almost normal in bulk, and it is covered 
with scales in the usual manner, but it is much plicated. 
The interior is thickly lined with short whitish glossy 
hairlets. At the base of this cavity is a diminutive 
undeveloped acorn, which appears to afford protection 
and food for the larva, and to constitute the true gall. 
This acorn is reddish-brown in colour, it is firmly 
attached to the cupule, clothed with microscopic hair- 
lets, and, it consists of three superimposed parts. The 
lower third is like a circular cushion, about 4 mm. in 
diameter and 1°5 mm. high, and this portion appears to 
be the larval chamber; upon it rests another cushion- 
like part which is about 2 mm. high and the same in 
diameter, projecting from the top of which are several 
tiny black curved stigma-like filaments 1 mm. high. 
The acorn bears a very close resemblance to galls 
produced by Cynips galeata (Giraud), on twigs of Q. 
pubescens, on the Continent. That species, however, 
is about three times as large, and devoid of covering. 
