420 XEW YOiRK STATE MUSEUM 



with a baud of dark scales near the base; joints dark; 

 occiput Avith yellowish white scales; thorax with a black 

 or brown ground, thickly covered with short golden 

 yellow hairs, with fiA^e 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 narrovs- 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; hypopj'gium 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 asingle 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 triangnlar 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 



