[417] DIPTERA 31 



under side bearing a dense cluster of rather short hairs, filament quite *» 



slender, the exposed portion only slightly longer than the first joint of 

 the hind tarsi, hind tibiae of male outwardly bearing a few rather short 

 bristles, in the female not ciliate with scales, last section of fifth vein 

 sometimes less than twice as long as the preceding section. Length 

 about 3 mm. Two males and five females. 



Habitat. — Sitka, June 16; Kukak Bay, July 4; Popof Island, July 

 8 to 10; Juneau, Alaska, July 26. 



Type. — Cat. no. 5224, U. S. National Museum. 



More nearly related to glauca than to any of our other species. 



Rhamphomyia limata sp. no v. 



Differs from glauca as follow: Mesonotum marked with four 

 polished vittae which sometimes almost meet each other; segments 

 three to five of abdomen, and sides of the second, polished, the narrow 

 hind margins of these segments whitish, hairs on sides of abdomen 

 rather abundant and long, claspers of male hypopygium somewhat 

 oval, at the apex bearing a dense cluster of rather long hairs, filament 

 robust, the exposed portion less than half as long as the first joint of 

 the hind tarsi, hind tibiae of female not ciliate with scales, wings 

 tinged with yellow, especially in the costal cell, stigma dark brown. 

 Length 5 to 6 mm. One male and three females, collected June 8 

 and 9. 



Habitat. — Popof Island, Alaska. 



Type. — Cat. no. 5225, U. S. National Museum. 



Near Ji?nbriata^ but in that species the mesonotum is marked with 

 only three polished vittae, and the middle and hind femora of the 

 female are ciliate on the under side with nearly erect scales. 



Rhamphomyia barypoda sp. no v. 



Differs from glauca as follows : Mesonotum slightly polished, 

 thinly olive gray pruinose and marked with three indistinct black 

 vittae ; scutellum and abdomen polished, lower and posterior edges of 

 male claspers thickly beset with rather long hairs, claspers nearly 

 transversely trapezoidal, filament rather robust, sinuate, the exposed 

 portion only slightly longer than the first joint of the hind tarsi, the 

 latter as thick as the tibiae, middle and hind femora and tibise of 

 female ciliate both sides with nearly erect scales ; wings grayish hya- 

 line, tinged with pale yellowish at the bases, stigma dark brown, last 

 section of fifth vein about one and one-half times as long as the pre- 

 ceding section. Length 4 to 5 mm. Four males and six females. 



Habitat. — Sitka, June 16; Yakutat, June 21; Virgin Bay, June 

 26 ; Kadiak, Alaska, July 20. 



