Journal New York Entomological Society. 103 



5. Very small opaque gray species with shining front; the hind crossvein rec- 



tangular to the costa gracilis Packard. 



The hind crossvein oblique to the costa 6 



6. Femora yellow (in western specimens almost always) ; inland species. 



subopaca Loew. 

 Femora blackish ; occurs only adjacent to tide-water of the Pacific. 



millbrae Jones. 



