PROCEEDINGS OF THE NATIONAL MUSEUM. 423 



biowiiisli; fourth vein entire: base «>f costa bearing a black bristle at 

 least twice as long as the adjacent pile. 



y'l/pc. — No. 3-J02, U.S.N.M.; one male; length, 5 mm. 



Lomliiy. — New Hampshire. 



RHAMPHOMYIA COMPTA, new species. 



McfJc. — Head black, eyes contiguous; anteunte dark brown, tirst Joint 

 slightly over twice as long as the second, the third twice as long as 

 the hist, tapering quite rapidly near the base, then of nearly an equal 

 width; st>'le one third as long as the third Joint; proboscis slightly 

 exceeding height of head, palpi blackish. Thorax black, wholly shin- 

 ing, its sparse pile and bristles black; pleura brownish black; scutel- 

 lum black, bearing four bristles. Abdomen, including the venter, 

 shining brownish black, its i)ile white; hypopygium rather large and 

 greatly ex])anded below, yellow pilose, central filament slender, free, 

 very flexuous toward its tip. Legs simple, yellow including the cox;e; 

 tarsi l)r()wn, metatarsi less than one-half as long as their tibiie, middle 

 and hind metatarsi thicker than the front ones. Halteres yellow. 

 Wings pure hyaline, the veins and stigma brownish, fourth vein entire. 



Type. — No. 3203, TJ.S.N.M. ; one male; length, 3 mm. 



Localitij. — United States. 



RHAMPHOMYIA NASONI, new species. 



Female.— Head black, gray Y^olliuose; Hnteunje yellow, the third Joint 

 excepting the under side at the base black, rather broad; the style 

 bla(;k,one-ttfth as long as the third Joint; proboscis yellow, one and one- 

 third times as long as height of head, palpi yellow. Thorax black, 

 opaque brownish gray pollinose, marked with three slender dark brown 

 vittic, its sparse pile and bristles black; humeri and a streak back of 

 each, yellow; pleura dark browni, bluish gray pollinose, pile in front of 

 the halteres black. Scutellum colored like the thorax, bearing four 

 bristles. Abdomen compressed, opaque dark brown, hind margins of 

 the tirst six segments, especially on the sides, yellow; venter wholly 

 yellow: the two anal stylets largely yellow. Legs rather slender, light 

 yellow, including the cox;e; tarsi infuscated toward the tips; legs desti- 

 tute of scales and long hairs. Wings whitish hyaline from base nearly 

 to the apex of the discal cell, from theiH*e to the tij) dark brown, 

 mai'ked with a white costal spot beyond the tip of the tirst vein; veins 

 normal, colorless from the base to the branching of the second and third 

 veins, beyond this brown; last section of the fifth vein one-half longer 

 than the penultimate section. 



Type. — No. 3204, U.S.N.M.; length, 5 mm. A single specimen ca]v 

 tured May 0, 1894, by Dr. W. A. Nason, after whom I take pleasure in 

 naming this handsome species. 



Loealliy. — Illinois. 



