OF WASHINGTON. 271 



tibiae, and on the upper side and a few on the apical fourth of under side 

 of the middle and hind femora; wings brownish, stigma dark brown, 

 fourth vein obliterated before reaching the wing-margin, first posterior 

 cell of the same width as the first submarginal, sixth vein prolonged to 

 the wing margin. Length, 4 mm. 



Two females collected at Las Vegas Hot Springs, New Mexico, 

 August 7, by Mr. H. S. Barber, and Rio Ruidosa, White Moun 

 tains, New Mexico (altitude about 6500 feet), July 19, by Mr. 

 C. H. T. Townsend. 



Type. No. 6787, U.S. National Museum. 



Empis squamipes, n. sp. 



Black; front opaque, gray pruinose, third joint of antennas pear-shaped, 

 less than twice as long as wide, slightly shorter than the style, proboscis 

 five times as long as height of head; body opaque, gray pruinose, hairs 

 and bristles black, scutellum bearing two bristles; legs slender, the hind 

 ones noticeably dilated, hind metatarsi much thicker than the otheis and 

 bearing several bristly hairs, under side of front femora and apical third 

 of outer side of their tibiae bearing a few narrow scales, both sides of the 

 remaining femora and tibiae densely beset with long scales, smallest on 

 inner side of the middle tibiae; wings hyaline, pale smoky at the base and 

 along the costa, stigma wanting, first submarginal and first posterior cells 

 equal in width, fourth and sixth veins obliterated before reaching the 

 wing-margin. Length, 3 mm. 



A female specimen collected at the head of Rio Piedras Verdes, 

 Sierra Madre, Chihuahua, Mexico (altitude about 7500 feet),- 

 August n, by Mr. C. H. T. Townsend. 



Type. No. 6788, U. S. National Museum. 



Empis frontalis, n. sp. 



- Black, the palpi, halteres, and apical portion of claspers, yellow; eyes 

 widely separated, facets of a uniform size, front and face opaque, thinly 

 gray pruinose, a stripe of short hairs on each side of middle of front, third 

 joint of antennae sublanceolate, slightly over twice as long as broad, as 

 long as the style, proboscis two and one-half times as long as height of 

 head; body opaque, gray pruinose, hairs and bristles black, mesonotum 

 marked with four black vittae, a large cluster of bristly hairs above the 

 front coxae, scutellum bearing about ten bristles, hypopygium rather 

 large, filament hidden except near the base; legs robust, femora of male 

 bearing many hairs and bristles, tibiae almost bare, metatarsi slender and 

 of nearly an equal thickness; wings hyaline, stigma obsolete, veins com 

 plete, yellow, becoming brown apically. Length, 6 mm. 



A specimen of each sex collected on St. George Island, Alaska, 

 July 26, by Prof. Trevor Kincaid. 



Type. No. 6789, U. S. National Museum. 



