1863.] 
41 
occur frequently on rose leaves. I do not know whether they are the 
produce of the same insect. Besides the ordinary parasites, a beautiful 
Eupelmus with rudimental wings and two elevated ridges on the meso- 
thorax, has been reared from this gall. 
2. Mard^ icoody^ irregular swelling of the branches^ generally about 
two inches long and about half an inch or a little more in diameter. 
This is the gall of Rhodites dichlocerus Harris (Harris, Insects, etc., 
p. 549, Tab. VIII, p. 8, of the 3d edition). Specimens from New York 
and Connecticut were communicated to me by Mr. Akhurst and Mr. 
E. Norton. The 'S and 9 insect are described below under the above 
name. Aidax., CalUmome, Ormyrus and Eurytoma were reared from 
this gall. 
Several 9 specimens of Rhodites apparently identical with R. dich¬ 
locerus were labelled in Mr. Norton’s collection as having been reared 
from the elongated, densely prickly rose-gall (comp, below. No. 8). If 
this is not a mistake, it would lead to one of the two conclusions : either 
the insects obtained from the two galls offer some nice distinctions 
which escaped my scrutiny, or the prickly gall No. 8 is a mere variety 
of the other. 
3. Oblong or rounded swellings of the small branches. They vary in 
appearance, as there is sometimes one more or less oblong swelling, con¬ 
taining two or three cells, and about one third of an inch long, some¬ 
times a series of three or four such swellings, which, although continu¬ 
ous, do not coalesce entirely, each preserving its rounded shape. In 
this respect this gall is very different from the preceding, which, in 
the majority of specimens, is a more continuous swelling, tapering at 
both ends. 
When cut open, the galls appear more hollow than those of R. dich¬ 
locerus^ and this for the very plain reason that, although being smaller, 
they produce insects, and consequently contain hollows, of the same 
size. There also seems to exist a constant difference in the color of 
both galls ] the specimens of the gall of R. dichlocerus in my posses¬ 
sion have a more or less dark, purplish-red skin; those of the other 
gall are either green, when found on young, green twigs, or they have 
the color of a dead branch. I found this gall near Washington, and 
reared from it (besides the R. verna n. sp. described below), Eurytoma^ 
Ormyrus.^ Eupelmus., Tetrastichus and Pteromcdus. A small moth had 
also taken refuge within one of the probably empty galls. 
