3895. PROCEEDINGS OF THE NATIONAL MUSEUM. 431 



fourths tbe distance to the front end; sparse pile and bristles black; 

 pleura black, lightly white pollinose, its pile whitish; scutelluni black, 

 lightly white pollinose, bearing four bristles. Abdomen black, very 

 shining, dei)ressed, tapering j^osteriorly, its sparse pile whitish; narrow 

 hind margins of segments -J to 4 laterally whitish. Legs black, shining 

 except on the coxne, simple, rather slender; metatarsi of nearly an 

 equal thickness, the hind ones one fourth longer than the others. Knob 

 of halteres pale yellow. Wings giayish hyaline, veins and stigma 

 brown, fourth vein entire. 



Type.—^o. 3225, U.S.N.M.; one female; length, 7 mm. 



Locality. — Massachusetts. 



RHAMPHOMYIA SUDIGERONIS, new species. 



Malt. — Black in all its parts excepting the light yellow halteres and 

 central filament of the hypopygium. Eyes contiguous, upper facets 

 much larger than the lower ones; third antenna! joint broad, two and 

 a half times as long as broad, style nearly as long as the third joint; 

 proboscis nearly twice as long as height of head. Thorax subshining, 

 lightly gray pollinose, marked with three black vittte, the pile confined 

 to these vitta? and to the broad lateral margins, quite abundant and 

 rather long, black; pleura light gray pollinose, its pile black. Scutel- 

 lum subshining, naked except the four marginal bristles. Abdomen 

 subshining, the base subdepressed, toward the tip somewhat com- 

 pressed, its pile quite abundant and rather long, black; hypopygium 

 rather large, upper lamella' slender, shorter than the median, the latter 

 only slightly longer than broad; central filament free except its apex, 

 arcuate, rather robust. Legs rather robust, simple, the middle and 

 hind tibiii^ bearing several quite long bristles; front metatarsi some- 

 what thicker and one-third longer than the middle ones; hind metatarsi 

 noticeably thicker and one-fourth longer than the front ones ; hind cox.ii 

 greatly^ swollen at the middle. "Wings uniformly pale brown, stigma 

 dark brown, veins normal. 



Female. — Same as the male, except that the abdomen is depressed, and 

 the under side of the hind femora is ciliate with nearlj^ erect scales. 



Types.— ^os. 3226 and 3227, U.S.N.M.; length, 7 to 10 mm. Eleven 

 males and six females collected by the writer in March and April. 



Locality. — California. 



RHAMPHOMYIA AMPLICELLA, new species. 



Female. — Head black, gray pollinose; antennte black, the third joint 

 broad, gradually tapering to the apex, style one-fourth as long as the 

 third joint; proboscis slightly longer than height of head, palpi black. 

 Thorax, pleura, and si-utellum black, opaque, gray pollinose, thorax 

 marked with two blackish vitta^, its short, sparse ])ile and the bristles 

 black; pile of pleura whitish; scutelluni bearing four bristles, Abdo- 



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