32 COQUILLETT [4^8] 



Type. — Cat. no. 5226, U. S. National Museum. 



"^eav Jlexuosa, but in that species the mesonotum is nearly opaque, 

 not black vittate ; the legs and abdomen are dark brown, and the legs 

 of the female are not ciliate with scales. 



Rhamphomyia albopilosa sp. no v. 



Black, the knobs of the halteres yellow, hairs white, many of those 

 on the mesonotum, the ten marginal ones on the scutellum, those on 

 the antennae, palpi, upper part of occiput, vertex, tibiae, and tarsi, 

 black; hairs on mesonotum and sides of abdomen abundant and rather 

 long ; eyes of male contiguous, third joint of antennae two and one- 

 half times as long as broad, slightly over twice as long as the style ; 

 proboscis slightly longer than height of head ; mesonotum slightly 

 polished, the sides, front end and pleura opaque, gray pruinose ; scu- 

 tellum and abdomen polished, venter opaque, gray pruinose, hind 

 margin of sixth ventral segment densely fringed with rather short yel- 

 lowish bristles, the following ventral segment bearing a pair of blunt- 

 pointed, elongate, conical processes; hypopygium small, ascending, 

 thinly pilose, claspers somewhat elongate oval, pointed at the apex, 

 filament robust, usually free, the exposed portion somewhat shorter 

 than the first joint of the hind tarsi, the latter thicker than that of any 

 of the other tarsi, as thick as the tibiae, the first joint of the front and 

 hind tarsi bearing many long hairs on the upper side; wings hyaline, 

 veins and stigma dark brown, last section of fifth vein over twice as 

 long as the preceding section, sixth vein prolonged to the wing mar- 

 gin. Length 5 mm. Two males, collected June 10. 



Habitat. — Berg Bay, Alaska. 



Type. — Cat. no. 5227, U. S. National Museum. 



'Near ^i7vipi7osa, but in that species the mesonotum is opaque, the ab- 

 domen nearly so, the scutellum bears only two bristles, and the venter 

 of the abdomen is destitute of a fringe and pair of subconical processes. 



Rhamphomyia adversa sp. no v. 



Black, the halteres and bases of femora yellow, hairs and bristles 

 black; third joint of antennae four times as long as broad, about five 

 times as long as the style, proboscis slightly longer than height of 

 head; thorax opaque, gray pruinose, mesonotum marked with three 

 black vittae, scutellum bearing six bristles, abdomen slightly polished, 

 almost bare, legs slender, nearly bare, first joint of hind tarsi much 

 thicker than that of any of the other tarsi ; wings very broad, black, 

 the base about to apex of basal cells hyaline, venation normal, last 

 section of fifth vein almost twice as long as the preceding section, 



