OF WASHINGTON. 2 GO 



ing; mesonotum opaque, velvety, its hairs and bristles black, hairs of ab 

 domen yellowish ; hind tibiae without long hairs, distinctly dilated, as are 

 also the first two joints of their tarsi ; wings hyaline, veins brown, stigma 

 pale brown, last two sections of the fifth vein subequal. Length, 1.5 mm. 



A male specimen collected at Franconia, N. H., by Mrs. Annie 

 T. Slosson. 



Type. No. 6782, U. S. National Museum. 



Empis exilis, n. sp. 



Head black, eyes contiguous, the upper facets not larger than the lower, 

 face somewhat polished, proboscis yellow, slightly longer than height of 

 head; antennae brown, the third joint very elongate-lanceolate, about five 

 times as long as the style ; body slender, black, a large yellow spot on each 

 side of the first four abdominal segments, venter yellow, body polished, 

 except a cordate, gray pruinose spot in front of the scutellum, hairs of 

 body pale, bristles of mesonotum and scutellum black, scutellum bearing 

 two bristles, hypopygium small, the central filament arcuate, exposed 

 except at the apex; legs, including the coxa?, yellow, the apical portion of 

 the first two pairs of tarsi, whole of the hind ones, apical fourth of the 

 hind tibiae and outer half of the hind femora except at the apex, brown ; 

 hind femora considerably thickened, the under side beset with black, spin- 

 ous bristles, middle and hind tibiae bearing a few rather short bristles on 

 the outer side, front and middle metatarsi subequal in size, about one- 

 third as thick as the hind ones; wings hyaline, stigma obsolete, last sec 

 tion of fifth vein slightly longer than the preceding, sixth vein prolonged 

 almost to the wing-margin ; halteres yellowish. Length, 3.5 mm. 



A male specimen collected at Atherton, Missouri, May n, by 

 Mr. C. F. Adams. 



Type. No. 6783, U. S. National Museum. 



Empis scoparia, n. sp. 



Head black, eyes widely separated, facets of a uniform size, front and 

 face polished, antennae brown, the third joint lanceolate, about four times 

 as long as wide, six times as long as the style ; proboscis yellowish brown, 

 one and one-half times as long as height of head ; body black, polished, the 

 margin of mesonotum, whole of pleura, scutellum and metanotum, opaque, 

 gray pruinose, hairs of abdomen and those in front of the halteres mixed 

 brown and yellowish, scutellum bearing four bristles, hypopygium large, 

 central filament exposed at the apex, in front of the hypopygium on the 

 venter is a large prominence tipped with a large cluster of rather short 

 black bristles; coxae black, legs dark yellow, the tarsi except their bases 

 brown, femora slender, under side of the last two pairs beset with rather 

 short bristles, the outer side of the tibiae bearing a few bristles, hind 

 metatarsi slightly thicker than the others; wings hyaline, stigma gray, 

 venation complete, sixth vein prolonged to the wing margin ; halteres 

 yellow. Length, 6 mm. 



