266 KANSAS UNIVERSITY QUARTERLY. 



hind angles yellow. Legs yellow, all the tarsi and the tip of all the 

 tibiae black; hind tibiae brownish; tip of hind femora brown or black- 

 ish; coxje in part yellow. Wings tinged with blackish, the immediate 

 base, the costal cell and the outer part of the subcostal and marginal 

 cells yellow; fourth posterior cell usually short-petiolate at the base. 

 Length 9-10 millim. 



Four specimens, Craig mountains, Idaho, J. M. Aldrich. 



