430 THE NORTH AMERICAX EMPTDJ^—COQUILLETT. vol.xviii. 



not fractured nor tlexuous. Legs black, rather robust, simple; front 

 metatarsi slightly thicker and longer than the middle ones, hind meta- 

 tarsi much thicker and one-fourth longer than the front ones. Knob 

 of halteres yellow. Wings brownish gray, stigma and veins dark brown, 

 fourth vein entire. 



Female. — Same as the male, with these exce])tions: Under sides of 

 middle and hind femora ciliate with nearly erect scales; front meta- 

 tarsi not noticeably thicker than the middle ones. 



Types.— ^oi^. 31321 and 3222, TJ.S.I^.M.; length, 9 to 10 mm. Two 

 males and four females captured by the writer in ]\Iarch. 



Locality. — California. 



RHAMPHOMYIA ABDITA, new species. 



Male. — Head black, oi)aqne gray pollinose; eyes contiguous, upper 

 facets much larger tluin tlie lower; antennae blackish, third joint 

 broadly lanceolate, style almost one-third as long as the third joint; 

 proboscis slightly longer than height of head. Thorax snbopaque 

 black, gray pollinose, its sparse pile and bristles black; pleura black, 

 gray i)ollinose, its pile whitish; scutellum opaque gray pollinose, bear- 

 ing f ;ur bristles. Abdomen somewhat depressed, black, subshining, 

 its ])ile whitish; hypopygium small, the filament hidden. Legs black, 

 hind tibioe strongly curved inward near the base, front tibia' dilated on 

 the inner sides of the apical two-thirds, the dilated portion thickly 

 ciliate with short set.ie and pile; front metatarsi as thick as, but only 

 two-thirds as long as, the hind ones; middle metatarsi much slenderer 

 than the others. Knob of halteres dark yellow. ^Vings hyaline, veins 

 normal, stigma brown. 



Female. — Same as the male, with these exceptions: Hind tibijiB 

 straight, front ones not dilated, front metatarsi noticeably thicker than 

 the hind ones; both sides of femora, and of front and hind tibijc, also 

 inner sides of middle tibia^ on the basal third, ciliate with nearly erect 

 scales. 



Ti/pes.—^o». 3223 and 3224, U.S.N.M.; length, 6 mm. One male 

 and three females collected by Prof. C. V. Piper. 



Locality. — Washington. 



RHAMPHOMYIA VIRGATA, new species. 



Female. — Head black, opaque gray pollinose next the antenna?, else- 

 where shining; antenna' very dark biown, third joint but slightly 

 narrowing toward the apex, which is unusually broad; style one sixth 

 as long as the third joint; proboscis three times as long as height of 

 head, palpi brown. Tliorax black, grayish white pollinose except four 

 shining vitta', a humeral spot, and the narrow lateral nuirgin ; the two 

 median vitta* begin at the protlnn-ax and extend slightly behind the 

 suture; the lateral ones begin near the hind edge and extend three- 



