THE ENTOMOLOGIST. 147 
Von Schlechtendal observes of this gall:—“It often 
happens that the galls of this species are distorted by 
inquilines before they are matured; in such cases they 
hardly attain the size of a pin’s-head.” I have frequently 
noticed these dwarfed specimens in the next species— 
D. divisa. The controllers of D. longiventris are Synergus 
pallicornis, Syntomaspis cyanea, S. lazulina, Callimome 
abdominalis, and C. regius; also Elachestus Cyniphidum, 
according to Ratzeburg. This species has been recorded as 
British by Mr. Miiller (E. M. M. vii. 108), who met with it 
rather sparingly in the neighbourhood of Norwood.—E£. A. 
Fitch. 
51. Dryophanta divisa, Hart.—Like the preceding, the 
gall of this species is also found on Quercus pedunculata. It 
is spherical, but distinctly flattened at the top and bottom, 
so that it has in the centre a perpendicular diameter of five 
millimetres, and an horizontal diameter of seven millimetres. 
It adheres at one point to a side rib, rarely to the midrib, on 
the under side of the leaf, and is not visible from the upper 
side. Its surface is glossy, smooth, bare, brownish yellow, 
and frequently red on the side which is exposed to the sun; 
it has a few very flat, scattered papille of a darker colour. 
In section it exhibits a radiating, but not close, parenchyma, 
and has a large larva-cell without an inner gall. It is 
distinguished from the two previously-described species by 
its smaller size, its flattened spherical shape, its shining 
surface, and by the size of its larva-cell, which is very large 
with respect to the size of the gall. Frequently there is a 
tolerably well-defined flat papilla opposite the basal attach- 
ment, which is a little darker than the surrounding colour. I 
have not bred the fly as yet.—G. LZ. Mayr. 
There has been much uncertainty and confusion as to the 
specific differences in the galls of the three preceding species 
of Dryophanta. This has also been the case with this and 
the following species. The distinctive marks of the latter 
three are as follows:—The galls of Divisa are thick-walled, 
those of Agama are thin-walled, whilst Disticha exhibits a 
double cavity in section. Speaking of Agama, Von 
Schlechtendal says that in some years it occurs in such great 
numbers as to bend the twigs. With me Agama has occurred 
sparingly ; and such I believe to be generally the case in 
