58 
Psyche 
[April 
a straight line from its base to the base of the fork) about .55 
as long as R3; petiole of the media measured from the cross- 
vein about 1.25 as long as Ml +2. Halteres yellow. Tenght, 
2.5 mm. Holotype in my collection. Ithaca, N. Y., August. 
Female. In coloring like the male. Allotype in my collec- 
tion. Ithaca, N. Y., August. 
Paratypes collected at the same time and place in the 
Cornell University collection and in the Museum of Comparative 
Zoology at Cambridge, Mass. The radius ratio in the paratype 
specimens varies from .44 to .66, the media ratio from 0.8 to 1.3. 
