422 NEW YORK STATE MUSEUM 
of the foregoing and from C. vexans also, the male differs 
in having a white band on the middle of the long second joint 
of the palpus. In spite of the tooth on the underside of the hind 
claws I believe my identification is correct. 
Male. Length 5mm. Antennae with long fulvous hairs, pro- 
boscis and palpi dark brown, the latter with a white hand on 
the middle of the loug second joint, and the bases of the third 
and fourth joints white. The occiput with golden yellow hairs 
and patches of blackish and whitish scales; dorsum of the thorax 
with a black or brown ground uniformly covered with golden 
yellow hairs, the posterior margin and the scutellum with a 
fringe of longer yellow hairs; metanotum light grayish brown, 
bare; pleura brown with whitish scales. 
Each segment of the abdomen dorsally with its anterior 
fourth covered with short white scales; posterior part of 
the segments black slightly produced forward in the center 
and the posterior margins of the next to the last whitish; 
the last one wholly black; genitalia brown, the apical joint 
slender with a spine near its apex [pl.40, fig.12]; venter pale 
brown with whitish scales; entire abdomen with long, erect pale 
brown hairs; femora brownish, the bases and the flexor surface 
of the middle and hind pairs and sometimes the front pair also, 
white; tibiae and tarsi brownish black, flexor surface paler; the 
immediate base (about one eighth of the length) of each joint of 
the tarsi yellowish white. The hind legs with erect, yellow 
setae. All tarsal claws with a tooth on the under side of each. 
The long claw of the middle foot as shown in figure 12. The 
venation is about as that shown for C. cantans, though 
the posterior cross vein is not oblique. Halteres yellowish 
white. 
Female. Differs from the male only as follows. Antennae 
brown, basal two or three joints yellow; abdomen marked like 
the male, but the long hairs are only on the posterior margin 
of each segment; genitalia black, consisting of two fingerlike 
lobes; venter yellow with white scales, posterior margin of the 
segments black. Tarsal claws like the male. 
Described from bred specimens. 
Larva. The larva resembles that of C. cantans. The man- 
dibles are like those shown on plate 45, though the teeth are 
more blunt; the maxilla is like that shown on the same plate, 
though the palpus is rather shorter than shown here, and there 
are two lateral spines. The labium is pointed, and the antenna 
has a tuft of bristles near the middle. The teeth on the sides 
of the eighth segment are arranged in one irregular row. The 
spines of the longitudinal row of the breathing tube each have 
