4 Proceedings of the Biological Society of Washington. 



legs, more widely separated eyes, and the bristling of the hind tibiae; 

 and from pallidula, by the longer-haired arista, black abdomen, and brist- 

 ling of hind tibia. 



The type specimen was labeled -proximo, Van der Wulp in Coquillett's 

 writing, but that species differs in having the eyes less widely separated, 

 palpi black, and tarsi fuscous, being much more like apicata than is the 

 present species. The description of proximo, lacks the details necessary to 

 insure its identification 



