76 THE ENTOMOLOGIST. 
projections varies from half to one centimetre. The gall is 
hard, brown, and not glutinous. It is chiefly remarkable in 
the section which exhibits many egg-shaped cells, in which 
the larve of the gall-flies live; these cells or inner galls are 
surrounded by the moderately hard, brown, gall-substance. 
It is found on Quercus pubescens, rarely on Q. sessiliflora, 
and is full grown in the autumn, but does not fall; therefore 
two-year old galls perforated with holes are often met with on 
the oaks. Herr von Haimhoffen, who has both described and 
figured this species in the ‘ Verhandlungen der Zoologisch- 
botanischen Gesellschaft,’ 1867, page 527, states that 
when kept in a warm room the imagos emerged from 
December to the end of February, but those kept out of 
doors did not appear till the end of spring. From a gall 
which I collected on the 8th November, 1869, the first 
imago emerged on the 18th of the same month, and was 
followed by others during the next few days.—G. L. Mayr. 
Three species of Synergus, viz. Melanopus, Pallidipennis, 
and Pallicornis, occur in the galls of this species; and 
Megastigmus dorsalis is parasitic on the Cynips larva.— 
E. A. Fitch. 
Life-histories of Sawflies. Translated from the Dutch of 
Dr. 8. C. SNELLEN VAN VOLLENHOVEN by J. W. May, Esq. 
(Continued from p. 52.) 
NEMATUS APPENDICULATUS, Hart. 
Imago: Harlig, Blatt-und-Holzwespen, p. 202, No. 34. 
Larva undescribed. 
Nematus niger, subnitidus, clypeo et pedibus pallide 
ochraceis, antennis subtus et alarum stigmate fusces- 
centibus. 
I had from time to time seen on red-currant bushes a small 
green tenthredinous larva, which evidently belonged to a 
species of Nematus, but I had not taken any particular 
interest in the matter. The smallness of the larva, its green 
colour, the probability that it would only produce a yellow 
and black Nematus, whose number seems to be legion, the 
absence of anything remarkable in its habit and mode of 
