420 COQUILLETT 



type and co-types; the middle lamellae, or claspers, do not bear a 

 process before their tips, the appearance in the type specimen being 

 due to a matting of the bristly hairs at this point, and the enlarged 

 base of the filament is present in most if not in all of the species, but 

 in normal specimens is concealed froin view. 



Rhamp!iomyia anthracodes sp. nov. 



Black, the hairs of the male abdomen, except dorsally, light yellow ; 

 eyes of the male separated almost as widel}' as the posterior ocelli, 

 third joint of antennae slightly over twice as long as wide, three times 

 as long as the style, proboscis slightly longer than height of head, body 

 polished, mesonotum not distinctly vittate, its hairs sparse and rather 

 short, scutellum bearing from four to six hairs, abdomen of male bear- 

 ing many long hairs along the sides, hypopygium very large, ascend- 

 ing, claspers inverted subtriangular, the base truncate, the apex con- 

 vex, the posterior margin rather densely fringed with long, yellowish, 

 bristly hairs, emargination at apex of dorsal piece not reaching half 

 way to its center, filament thread-like, the exposed portion about one 

 and one-half times as long as the first joint of the hind tarsi, a rather 

 strong curvature a short distance from the base ; legs robust, hind 

 tibiae of male fringed with long hairs on the outer and inner sides, first 

 joint of hind tarsi subequal in thickness to that of the front ones, its 

 upper edge fringed with rather long hairs, in the female the middle 

 and hind femora and their tibiie are fringed on both sides with nearly 

 erect scales; wings of male hyaline, of female pale brown, more yel- 

 lowish brown at the base, in both the veins and stigma dark brown, 

 venation normal, sixth vein obliterated before reaching the wing mar- 

 gin. Length 4 to 5 mm. Two males and one female. 



Habitat. — Metlakahtla, June 4; Sitka, Alaska, June 16. 



Type. — Cat. no. 5230, U. S. National Museum. 



Rhamphomyia atrata sp. nov. 



Black, including the hairs; eyes of male contiguous, third joint of 

 antennai slightly over three times as long as broad, about three times 

 as long as the style, proboscis twice as long as height of head, body 

 opaque, mesonotum not vittate, its hairs quite abundant and long, 

 scuteliinn bearing six bristles, hairs on sides of abdomen quite num- 

 erous and rather long, hypopygium small, obliquely ascending, claspers 

 of nearly uniform width, the outer lower corner considerably prolonged, 

 dorsal piece cleft from apex to bcNond the center, filament rather 

 robust, the exposed portion nearly straight, slightly less than half as 

 long as the first joint of the hind tarsi, the latter about twice as thick 



