610 PROCEEDINGS OF THE NATIONAL MUSEUM. voi..xxiii. 



the third slightly over four times as long us wide, gradually tapering 

 to the apex, nearly four times as long as the style, palpi and proboscis 

 yellow, the latter almost twice as long as height of head; thorax yel- 

 low, a large black, gra}' pruinose spot in middle of hind part of meso- 

 notum. sending three long prongs toward the head, the median one 

 sul)opa(iue, the lateral ones polished, three small black spots beneath 

 insertion of each wing, and a fourth })ordering the mesothoracic spir- 

 acle and prolonged backward almost to the wing, hairs and bristles of 

 thorax black, scutellum yellow, the ])ase in the middle black, bearing 

 four bristles: abdomen polished, yellow, bases of segments iJ to 4 or 5 

 usually l)lack, most extended in the female, central filament of male 

 hypopygium very sinuous; legs yellow, apices of tarsi brown, middle 

 and hind femora beset with spinous bristles on the under side; wings 

 hyaline, stigma brown, a ])rown cloud on base of upper branch of third 

 vein, another on vein at base of second posterior cell, and one above 

 forking of second and third veins; length. 5 to 6.5 mm. Two males 

 and one female, collected June 12 by Mr. C W. Johnson. 



Ilahttat. — Delaware County, Pennsylvania. 



Ti/jM\— Cut. No. 5191, U.S.N.M. 



RHAMPHOMYIA CLAUDA, new species. 



2fale. — Head black, gray pruinose, eyes contiguous, antenna? ])lack, 

 the third joint tive times as long as broad, nearly live times as long as 

 the style, mouth parts brown, proboscis scarcely longer than height 

 of head; thorax and scutellum black, opacpie, gray pruinose, hairs and 

 bristles black, scutellum bearing four bristles, abdomen dark brown, 

 subopaque, hairs brown, hypop3'gium small, upper pieces usually yel- 

 low, gibbous, a clavate projection tipped with bristles in front of each 

 clasper about half as long as the latter, central filament usuallv free 

 except at apex, widely dilated near the middle; legs yellow, apices of 

 tarsi, nearly the whole of hind ones, and sometimes of middle ones, 

 hind femora except their bases, also a spot on under side of the hind 

 trochanters, brown, all coxa? and greater part of femora sometimes 

 brown; hind femora each greatly enlarged toward the apex, dilated 

 before apex of anterior under side where it bears many black hairs; 

 hind tibia? greatly bent inward at the middle, suddenly dilated later- 

 ally on the basal third, bearing a small rounded lobe on the anterior 

 inner side at one-fifth length of tibia from the base, be3^ond which is 

 a large concavity reaching almost to middle of tibia; wings hyaline, 

 veins brownish, stigma pale gray, sixth vein prolonged to the wing- 

 margin; halteres yellow; length 3.5 to 1 mm. Two specimens, 



IlaHtat. — Clementon, New Jersey (May 10, C. W. Johnson); and 

 Mount Washington, New Hampshire (Mrs. A. T. Slosson). 



Ti/jje.—Cit. No. 5192, U.S.N.M. 



