REPORT OF THE STATE ENTOMOLOGIST 1918 10g 
protruding from the developing socket. The galls become full 
grown the latter part of August or early in September and drop to 
the ground, the larvae remaining therein till the following spring. 
Galls of this species, taken at East Schodack May 14, 1907, produced 
adults May 20th. This peculiar gall is common about New York 
City, the vicinity of Albany, has been received from Michigan and 
recorded from Ontario and also from Indiana. Polygnotus and 
Torymus species were reared from this insect. 
Gall. The full-grown gall is a hollow tube 4 to 5 mm long and 1 
mm in diameter (fig. 13, and pl.8). The apex tapers rather suddenly 
and varies in color from greenish when young to 
brownish or even black when fully developed. 
These galls arise in characteristic sockets or pits. 
The partly developed galls differ from the full- 
grown ones mainly in length and are easily recog- 
nized on account of their resemblance to the more 
commonly observed form. These galls are occasion- 
ally abundant enough to produce a curling of the 
leaf, though as a rule they are somewhat scattering. 
Professor Cook, writing of this gall, states that 
it is very similar to that of C. holotricha 
except that the amount of tannin is not so great. 
The upper portion of the wall is much thicker : 
than either side of the lower wall, the point of at- Fig. 14 Cary- 
tachment is not so large, and the gall is protected omyia tubicola, 
by a growth, producing a cup-shaped cavity in breastbone of 
which it develops. The inner layers of cells are @tv@ (enlarged, 
ERS original) 
very rich in protoplasm. The cells are elongated 
with the long axis of the gall and fibrovascular bundles are more 
numerousthan in C. holotricha though very small. 
A more slender, similar appearing, though presumably different 
gall occurs occasionally on hickory leaves and has been described and 
figured by B. W. Wells in the Ohio Journal of Science, 16:53 (fig. 
27), 1915. This gall is almost invariably slightly curved, tapers to 
a nearly acute point and the entire interior is hollow. 
Larva. Length 2 mm, stout, white, the head small; antennae 
small, biarticulate; breastbone (fig. 14) slender, unidentate, the 
tooth long, triangular, acute. Segmentation rather distinct, the 
skin nearly smooth, the posterior extremity broadly rounded. 
Male. Length 1.75 mm. Antennae nearly as long as the body, 
sparsely haired, pale yellowish; fourteen cylindric, subsessile seg- 
ments, the fifth (fig. 15) with a length about two and one-half 
times its diameter, a slight constriction at the basal third, the circum- 

