420) NEW YORK STATE MUSEUM 
with a band of dark scales near the base; joints dark; 
occiput with yellowish white scales; thorax with a black 
or brown ground, thickly covered with short golden 
yellow hairs, with five narrow longitudinal stripes of white 
scales. The lateral stripes are not parallel with the inter- 
mediate pair, but, starting anteriorly quite close together, 
diverge rapidly and end near the base of the wing. The white. 
stripes are frequently quite indistinct, in which case the 
thorax might be described as having two rather wide yellowish 
stripes; pleura and scutellum with whitish hairs; metanotum 
brown and bare; each segment of the abdomen dorsally with 
its anterior third covered with short, whitish scales, which ex- 
tend also in a narrow more or less broken line along the lateral 
margin. Posterior part of the segments is black with an occas- 
ional paler scale, particularly on the posterior margin. The 
last segment is nearly covered with white scales. Venter with 
yellowish white scales, which are rather thickly interspersed 
with long, pale brownish hairs; hypopygium prominent, black; 
flexor surface of the femora white, extensor surface sprinkled 
with brown; flexor surface of the tibiae and metatarsi yellow, 
extensor surface brown; tarsi black with the basal third or 
fourth white. Claws all with a tooth on the underside of each. 
One claw of the middle foot is much longer than the other and 
is sinuous in outline [fig.10]. Wings hyaline with blackish 
scales and a sprinkling of paler ones. Fourth tarsal joint of the 
male short. Venation as in figure 9. Halteres white. 
Female. Antennae pale brown; proboscis fuscous; venter of 
abdomen without long hairs; genitalia black; anterior femora 
and tibiae brownish, with scattered whitish hairs; fore and 
middle tarsal claws with a single tooth, hind pair simple. In 
all other respects like the male. 
Larva. Length 11 to 12 mm to the tip of the breathing tube. 
The head is dark brown, antennae with two slender and two 
stout apical setae and a short terminal joint; at a little below 
the middle is a tuft of about eight hairs, and on the shaft are 
a number of short, thick spines. The color of the antennae is 
a uniform dark brown. The rotatory fans are rather long, the 
individual hairs are noticeably pectinate at the tip. The man- 
dibles, maxillae and labrum are normal, the latter apparently 
without the pair of dorsal spines, possessing a long, thick tuft 
of hair apically and a comparatively large palpus. At the base 
of the palpus on the triangular sclerite is a stout spine, and 
caudad and mesad of this is another, placed close to the suture 
which separates the lateral from the ventral sclerites of the 
head. The labium resembles that of C. triseriatus but 
