422 THE yORTH AMERICAN EMPIDJ£—COQUILLETT. vol.xviii. 



RHAMPHOMYIA AMPLIPEDIS, new species. 



Male. — lleiid black, ^lay pollinose except ou oral luaigiu, eyes con- 

 tiguous, upper facets much larger than the lower ones; autennai yel- 

 lowish brown on two basal joints, the third black, narrow, very gradually 

 tapering to the apex; style one-fifth as long as the third joint; pro- 

 boscis three times as long as height of head, palpi dark brown. Thorax, 

 pleura, and scutellum black, opaque, gray i)ollinose, the j)ile and bristles 

 black; scutellum bearing four bristles. Abdomen compressed, brown- 

 ish yellow, shining, its pile black; hypopygiuin rather large, upper 

 lamelhe not swollen, longer than the middle ones, the latter of nearly 

 an equal width, obliquely truncate at apex, the upper angle prolonged 

 beyond the lower one; lower lamelhe prolonged at each side, each side- 

 piece bending outward near its tip, which is rounded; central filameut 

 slender, not fractured, very llexuous toward its apex. Legs slender, 

 ttie coxae, femora, and tibia* dark yellow, tarsi black ; front metatarsi 

 thicker and longer than the middle ones, hind metatarsi one-half thicker 

 and one- third longer than the front ones; hind tibne at apices as thick 

 as their femora. Knob of halteres yellow. Wings brownish gray, 

 stigma pale brownish, veins dark brown, fourth vein entire. 



Female. — Same as the male, except: Proboscis nearly' four times as 

 h)ng as height of head; abdomen tapering to the tip; under side of 

 middle and hind femora ciliate with scale-like seta'. 



Types.— ^os. 3200 and 3201, IT.S.X.M.; length, o to 7 mm. Seven 

 males aiul three females in the Museum collection. 



Locality. — Massachusetts. 



RHAMPHOMYIA TERSA, new species. 



]\[ale. — Head black, bluish-gray pollinose; eyes contiguous, upper 

 facets much larger than the lower ones; antenna' black, tirst two joints 

 yellowish, the third slender, sublanceolate; style about one-third as 

 long as the third joint; proboscis scarcely longer than height of head; 

 palpi black; thorax, pleura, and scutelluui black, opa(pie, bluish-gray 

 l)ollinose, the sparse pile and bristles black; scutellum bearing four 

 bristles; abdomen blackish, tinged in places with yellowish, opacpie 

 dark gray pollinose; its pile rather long and quite abundant, yellowish; 

 hypopygiuin rather large, ascending, upper lamelhe considerably swol- 

 len, and below apex of each a cylindrical, fleshy, hairy process pro- 

 jecting backward; intermediate lamella* longer than the others, nearly 

 horizontal, their apices studded with numerous very short black spines; 

 lilainent slightly thickened at base, then slender and flexuous, not frac- 

 tured; venter compressed, opaque, yellowish except at apex; legs sim- 

 ple, slender, yellow, including the coxiie; hind femora outwardly, their 

 tibiie and all the tarsi, yellowish brown, front metatarsi sliglitly thicker 

 than the middle ones, not quite so thick, bat fully as long, as the hind 

 ones; knob of halteres light yellow; wings hyaline; veins and stigma 



