N. .. 1280. NE W NORTH AMERICAN DIPTERA—COQ UILLETT. Ill 



slender, the labella small; thorax gray pruinose, marked with four 

 black vitti», three pairs of postsutural dorsocentral bristles, three 

 sternopleurals, scutellum bearing- four marginal pairs, the last pair 

 directed backward; abdomen polished, bases of last three segments 

 thinly gray pruinose, lirst segment with marginal, the following two 

 also with discal, the last one nearly covered with rather long bristles; 

 middle tibia? each bearing two or three long bristles on the outer- 

 anterior side, hind tibia? somewhat unevenly ciliate on the outer- 

 anterior side, wings hyaline, third vein with three or four bristles near 

 the base, calypteres white; length, 5 to 7 mm. Seven males and one 

 female collected August 26, 1895, by Prof. J. M. Aldrich. 



Jlal)itat. — Moscow and Lewiston, Idaho. 



Type.—Q-^L No. 6212, U.S.N.M. 



NEMOR^A SETIGERA, new species. 



Black, the face, palpi, and fourth abdominal segment yellow, apex 

 of proboscis dark brown; vertex slightly narrower than either eye, 

 two pairs of orbital bristles, frontals descending to the arista, sides of 

 front on lower part, face and cheeks golden yellow pruinose, a few 

 ))ristles above each vibrissa, cheeks one-lifth as broad as the eye height, 

 antennse slightly shorter than the face, the third joint very broad, 

 twice as long as the second, arista thickened to the middle, the penul- 

 timate joint slightlv longer than broad, proboscis rather slender, 

 labella narrow; body slender, thorax gray pruinose, marked with four 

 l)lack vittffi, three pairs of postsutural dorsocentral liristles, three 

 sternopleurals, scutellum ])earing four marginal pairs, the last one the 

 smallest, cruciate; abdomen thinly gray pruinose on the first three 

 segments, the second and third l)earing basal, discal. and marginal 

 l)ristles; front tarsi distinctly dilated, middle tibiffi bearing four 

 l)ristles on the outer-anterior side, hind tibia? not ciliate; wings hyaline, 

 crossveins not clouded, third" vein bearing four bristles near the base, 

 first posterior cell closed in the margin, hind crossvein near the bend 

 of the fourth, the latter rectangular and with a long stump, calypteres 

 white; length. 10 mm. A feniale specimen collected August 15, 1897, 

 l)y Prof. J. S. Hine. 



//(//>/V^//.— Medina. Ohio. 



Tijpe.—Ocxi. No. 6213. U.S.N.M. 



PHOROCERA STERNALIS, new species. 



Black, the scutellum except at base, and a spot on sides of second 

 al)doniinal segment of male, yellow; vertex of male nearly as wide as, 

 in the female one and one-fourth times as wide as, either eye, two pairs 

 of orbitals in the female, frontals descending almost to the ai'ista, the 

 latter thickened on the basal half, the penultimate joint slightly longer 

 than broad, antennge almost as long as the face, the third joint in the 

 male verv Vn'oad, four times as long as the second, in the female three 



