THE ENTOMOLOGIST. 195 



of the gall. The gall is hard, has a slightly flat crown, 

 and is covered with a while linge 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 Hylseus, one other aculeate Hymenopteron, and 

 one Fcenus. 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, Tetraslichus coro- 

 natus, n., and Chrysis dichious, — for this name 1 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. 



