AQUATIC INSECTS IN NEW YORK STATE 40L 
The hypopharynx (not shown in the figure), is tonguelike, and 
lies immediately dorsad of the labium on the floor of the mouth 
cavity. It is about as wide as the toothed portion of the labium, 
its anterior margin provided with a fringe of pale, short, finger- | 
like processes, which barely project beyond the edge of the 
labium when viewed from below, and is not visible without dis- 
section. 
The thorax [fig.1] is transversely oval, not as wide as the 
- head, with the three segments quite distinct. On the lateral 
margins of each segment are a few tufts of long laterad pro- 
jecting setae, those on the second and third segments being 
longer and more numerous than those of the first, and inserted 
-at the tips of fingerlike processes. | 
The abdomen [fig.1] is nine segmented with long setae on the 
margins; the setae of the anterior segments being longer than 
the posterior ones. The tufts of setae of the first and second 
abdominal segments are inserted on lobular processes like those 
of the thorax. The eighth segment is shorter than those preced- 
ing it; the ninth is slender and cylindric, and makes an angle 
with the long axis of the body.. At its apex are four small 
blood or tracheal gills, dorsad of which are a pair of long setae, 
and ventrad, a tuft of them. 
Projecting from the caudal margin of the dorsal surface of the 
eighth segment is the -Lreathing tube, a cylindric tube, as long 
as, or longer than any abdominal segment, its diameter being 
less than half its length. At the apex of the tube are several 
_ setae, and triangular flaps to cover the aperture. 
The color of the head is brown, that of the thorax and abdo- 
men grayish with white incisures. On the dorsal surface of 
each abdominal segment, surrounded by the whitish field and 
caudad of the incisure, is an oval, brownish spot. [Wee fig.1] 
Pupa. The pupa [fig.10] resembles that of Culex, but differs 
from it and from other Culicidae known to me, in lacking the 
broad swimming paddles. In place of them, there are two pointed 
processes, each with three spines at the apex and a single one 
laterally near the middle. The breathing trumpet as in Culex, 
the plane of the margin being quite oblique, but on the rim of the 
inner side is a little rounded projection. Each abdominal seg- 
ment has several pairs of setae, the median pair quite stout, the 
intermediate pair very short and slender and the one or two 
laterals long and very delicate. In addition to ‘the laterals, 
there is a longitudinal lateral fringe of very delicate hairs, and 
the lateral margin is serrate. 
Imago. This has already been well described by Mr D. W. 
Coquillett; and the description is reproduced below. 
