126 BRITISH OAK GALLS. 
prominent than that of the species now described, and 
the furrows on the mesonotum are much shallower 
and shorter (Bignell, l.c.). 
“Bred by Mr. Bignell from oakbuds which apparently 
were not expanded or distorted. 
“ The inquiline is Saphylotus connatus. Plymouth.” 
Spathegaster albipes, Schenck. 
(Plate LI.) 
Spathegaster albipes, Mayr, Fitch, Licht., Schltdl, Adler; 
Neuroterus albipes, Cameron. : 
English name of gall.— Schenck’s Gall.” 
Position of gall.—On the margin of the leaf and on the 
mid-rib. 
anne of growth.—Single, solitary, sessile, oviform, slightly 
pilose. 
Colours.—Yellowish-white, greenish-yellow, pale brown. 
Average dimensions of a mature specimen. — Length, 
2mm.; breadth, 1mm. 
May be sought during the months of April to June. 
Growth is complete by the end of May. 
The typical condition of the gall is unilocular and unilarval. 
The larva pupates in the gall. The imago emerges during 
June. 
Inquiline, No. 128. 
Alternate agamic generation: Neuwroterus lxviusculus, 
Schenck. 
Several writers are of opinion that this gall is 
indistinguishable from other galls of similar shape and 
size. 
In various features it coincides with those of 
Andricus nudus, A. gemmatus, A. circulans; and a 
continental species, Andricus burgundus. The imago, 
also, does not possess any definite characters whereby 
it can be separated. 
Cameron appears to have been the first to record 
this species as British. He found many specimens in 
the neighbourhood of Glasgow. 
It now appears to be generally distributed through- 
out Britain. 
