52 
Psyche 
[April 
ters yellow with white cilia. Halteres yellow, knobs darker, but 
scarcely blackened. 
Wings grayish, darker on anterior half; cross-vein bordered 
with brown a very little; last section of fourth vein straight; 
third vein bent backward a very little at tip. 
Female: Length 3 mm.; of wing 4 mm. Face wider, dark 
gray. Front opaque with brown pollen; hair on fore coxae a 
little more yellowish than in the male. Fore femora with a row 
of four quite long bristles below and a stripe of very short spines 
on lower anterior surface; fifth joint of middle tarsi not widened; 
last section of fourth vein with a very faint cloud at its middle; 
halteres wholly yellow. Joints of fore tarsi as 32-17-13-9-12; of 
middle ones as 47-26-17-11-13, those of posterior pair as 41-32- 
21-12. Otherwise about as in the male. 
Described from one pair, taken at Treesbank, Manitoba, 
September 16, 1925, by N. Criddle. They are in the Canadian 
National Collection. 
