1864.] 
485 
projecting from the upper surface of the leaf and the remainder oppo¬ 
site on its under side” (Fitch), grow near the margin of the leaf with¬ 
out however quite touching that margin, sometimes one-half of them 
projects outside from the margin. The galls mentioned by Dr. Fitch, 
as “ perfectly the same, except that they show no vestiges of any attach¬ 
ment to the leaf, being smooth and even on every side,” are most pro¬ 
bably small specimens of q. inanis 0. S. ( — confluenta Fitch.) The 
galls nubiltpennis, like q. inanis, vary much in size, my largest speci¬ 
men being .60 inch in diameter, and others only .30 inch; and the 
central cell is nearly twice as long as wide, whereas that of q. inanis is 
scarcely i as long again as wide. They were gathered in June from a 
tree full of the galls q. inanis, which however are at once distinguished 
by being attached to the leaf only by a single point. 
(x ALL-FLY, G. nuhtlipennis{^O. q. singular is Bassett.) The 
S of this species, as noticed by Mr. Bassett who was the first to dis¬ 
cover it, is very remarkable for having 16-jointed antennae, 14—16 
equal in length, and the suture between 15 and 16 beyond all doubt 
free, as correctly stated by that writer from 12 specimens. The 9 an¬ 
tennae, as stated both by Fitch and Bassett, are 13-jointed, the last 
joint robust and nearly as long as the two preceding and occasionally 
with indications of a medial connate suture ; the terminal joints gradu¬ 
ally thicker. The % antennae are full as long as the body, the 9 an¬ 
tennae scarcely more than 4 as long. The sculpture of the head and 
thorax is proportionally nearly as coarse as in spongifica, and there is a 
distinct short stria on each side of the abbreviated tip of the middle 
mesonotal stria. In all three of my 9 9 ^ abdomen is piceo- 
rufous, in the other S black. The hind femora and tibi* are almost al¬ 
ways dark reddish brown, and occasionally in a lesser degree the interme¬ 
diate ones. The wings are uniformly, but slightly, tinged with dusky, 
without any dark spot on the second cross-vein as in' spongifica, acicu- 
lata and inanis; the veins all dusky or brownish, and both cross¬ 
veins robust and shining brown-black. The dorsum of abdominal joint 
2 describes a circular arc of 45°, and the tip of the “ ventral valve” 
is in a right angle, with a hairy filiform appendage. The “ dorsal 
valve” is hairy and very large. Length % .12—.14 inch. 9 .14—.16 
inch. Two S , three 9 ? none of which were able to perforate the outer 
rind of the gall, though several had perforated the central cell. Con- 
