1895. PROCEEDINGS OF THE NATIONAL MUSEUM. 433 



forward over the back, more than three times as long as perpendicnlar 

 diameter of last abdominpJ segment; filament very thick at extreme 

 base, then snddenly becoming slender and bristle-like, nearly twice as 

 long as the hind femora, ascending over the back and slightly sinuous, 

 beyond its middle curving and descending to the hyi)oi)ygium. Legs 

 simple, rather stout, blackish brown, the middle and hind i>air beset 

 with long light yellow bristles, which are excessively long on the under 

 side of the hind femora and on outer side of the hind tibi*; front and 

 hind metatarsi of nearly an equal size, the middle ones much more 

 slender and shorter than the others. Knob of halteres light yellow. 

 Wings hyaline, stigma obsolete, veins brown, fourth vein entire but 

 very slender, as is also the anterior intercalary and posterior cross vein. 



Type.—^o. 3230, U.S.X.M.; length, 4 mm. A single male collected 

 by Mr. Charles Eobertson. 



Locality, — Illinois. 



RHAMPHOMYIA FLEXUOSA, new species, 



Male. — Head black, lightly gray pollinose, eyes contiguous, upper 

 facets nuich larger than the lower ones; antenna' dark brown, the 

 third joint black, sublanceolate, style nearly one-half as long as the 

 third joint; proboscis nearly one-half longer than height of head, palpi 

 black; thorax, pleura, and scutellum black, lightly grayish brown pol- 

 linose, subshining, the sparse pile and bristles black; scutellum bear- 

 ing four bristles; abdomen black, shining, compressed, its pile rather 

 long, sparse, black; hypopygium rather large, ascending; filament free, 

 slender, yellow, not fractured, very Hexuous toward the tip; legs 

 slender, simple, wholly brownish black; front and middle metatarsi of 

 an equal size, the hind ones twice as thick as and one-half longer than 

 these. Knob of halteres light yellow; wings, uniformly brownish gray, 

 veins and stigma dark brown, fourth vein entire. 



Female. — Same as the male, except that the abdomen is dull brownish 

 and tapers to the tip. 



Types.— ^08. 323 L and 3232, U.S.:^^.]^.; length, G mm. A single male 

 and female in the Museum collection. 



Locality. — Colorado. 



RHAMPHOMYIA PARVA, new species. 



Female. — Head black, bluish gray pollinose; anteunte black, third 

 joint lanceolate; style one-sixth as long as the third joint; proboscis 

 scarcely longer than height of head, palpi black. Thorax, pleura, and 

 scutellum black, opaque, bluish gray pollinose, the sparse pile and 

 bristles black; scutellum bearing four bristles. Abdomen very dark 

 brown, opaque, very lightly gray pollinose, tapering posteriorly. Legs 

 rather slender, dark brown; under sides of hind femora ciliate with 

 nearly erect scales; front and middle metatarsi of an equal size, soine- 

 Proc. N. M. 95 28 



