THE ENTOMOLOGIST. 195 
of the gall. The gall is hard, has a slightly flat crown, 
and is covered with a white tinge caused by a delicate 
exudation. A section of the mature gall exhibits a dry, 
spongy, brownish yellow parenchyma, which is cracked 
across the centre. It contains the inner gall with the perfect 
insect, and adheres but loosely to the reticulation. Late in 
the autumn the gall is mature, remains on the branch, and is 
pierced by the perfect insect in the following February.—G. 
L. Mayr. 
I have already published some notes on the inhabitants of 
this gall, which is called ‘crowned gall.” Synergus melanopus, 
S. Reinhardi, and S. pallicornis, are stated by Dr. Mayr to 
keep company with C. argentea, and he mentions Callimome 
regius and Megastigmus stigmaticans as its parasites. Many 
years ago several galls of C. argentea, from the neighbourhood 
of Naples, were given to me by the Rev. F. W. Hope, and I 
obtained from them two specimens of C. argentea, one 
Megastigmus stigmaticans, one Diomorus calcaratus, one 
Osmia, one Hylzus, one other aculeate Hymenopteron, and 
one Foenus. Most of these insects—perhaps all, with the 
exception of the first and the second—belong to the second 
epoch of the gall, or constitute the after-life in it. I found, 
in June, 1872, a few of these galls at Albano and Terni, near 
Rome, and shortly afterwards Synergus pallicornis came out 
of them in abundance, and a few females of Megastigmus 
stigmaticans, which I formerly described as M. giganteus, 
that MS. name having been given to it by Kollar. I also 
procured from these galls Eurytoma squamea(?) (smaller 
than the usual size), E. coronata, n., Pteromalus lucidus (?), 
P. albidipes, n., Eupelmus spongipartus, Tetrastichus coro- 
natus, n., and Chrysis dichrous,—for this name I am indebted 
to Mr. F. Smith. Descriptions of the three species here 
mentioned as new are deferred. Eurytoma coronata belongs 
to the group formerly named Isosoma; Eupelmus spongi- 
partus, Foerst., hardly differs from E. urozonus, except in the 
slightly longer oviduct,—I am indebted to Dr. Mayr for the 
name of it.— Francis Walker. 
