60 Psyche [April 



posterior ones piceous, front coxae fuscous and witii white hairs; legs dark 

 fuscous, with whitish pubescence, middle tibiae setulose beneath, front 

 femora somewhat the thickest, reddish beneath. Halteres yellowish; tegulae 

 with a few white cilia. "Wings clear hyaline, veins strong, hind margin short 

 ciliate, marginal cell long, third and fourth veins parallel. 



Type male collected on a windowpane July 3, 1906, in my house at 

 Pullman, Washington. Type female taken in a wheat field nine miles 

 west of Baird, Washington, June 23, 1908. This species was noticed 

 actively running about the ground and stalks in wheat fields in several 

 places in Central Washington. I have also five mounted paratypes 

 which I collected at Lynden, Baird, and Pullman, all in Washington 

 State. 



Tachydromia universalis sp. nov. 



Black, sparsely and lightly dusted; wings nearly uniformly hyaline; arista 

 subterminal, the basal antennal joint red; palpi broad, white; legs reddish, 

 variegated with brown; halteres yellow. 



Male and female. Length 1.75 mm. Black, shining, lightly dusted with 

 a gray pruinosity, which is more conspicuous on the pleurae, propleurae not 

 glistening white. Antennae short, the two joints about equal in length, the 

 basal joint red, the outer joint blackened, rounded oval, with a subterminal 

 arista which is two and one-half times the length of the antenna. Front 

 broad, its sides diverging above, the ocelli widely spaced. Upper facets 

 minute, the lower ones larger. Palpi conspicuous, pendant, broad, white, 

 with white hairs: proboscis black in the male, blackish in the females. Thorax 

 comparatively broad, the humeri rather large but not long, the grooves rather 

 distinct; acrostichals wanting, only a couple of weak dorsocentrals present 

 near the scutellum; scutellum pruinose, and with two short bristles. Abdo- 

 men depressed, .shining jet black, but overlaid Vv^ith a lights coating of gray 

 dust: hypopygium large, shining, provided with a stout curved end-process 

 which projects to the right; sides of the abdominal segments with minute 

 muscle-attachment pits, as in agens. Legs reddish yellow, the upper side of 

 the hind femora, the ends of the tibiae and the last tarsal joint darker; front 

 femora thickened, hind femora scarcely reaching the last third of the abdomen. 

 Halteres yellow. Wings rather broad, hyaline, but with a faint smokiness 

 following the veins; veins strong, dark, but becoming yellowish at the base 

 of the wing; marginal cilia minute; hind cross vein making an acute angle at 

 the lower corner of the second ba^al cell. 



Described from five si)ecimens collected in the following widely 

 separated localities: Chester County, Pennsylvania, June, 1902 (J. C. 

 Bradley), Algonquin, Illinois, July 17, 1S96 (Dr. Wm. Nason), and 

 Austin, Texas. 



