ART. 23 TWO-WINGED DOLICHOPODID FLIES VAN DUZEE 31 



about equal to the third joint in length; legs and feet wholly yel- 

 low, middle and hind coxae a little blackened at base ; middle femora 

 with rather long brown hair on lower, anterior edge; posterior femora 

 with long black bristle-like hairs on lower edge; hind basitarsus 

 with many long bristles; joints of fore tarsi as 36-9-8-5-6; those of 

 middle tarsi as 32-16-12-8-8 ; joints of hind tarsi as 32-13-13-10-9. 



This was described from New York State. I have seen specimens 

 from Aiibnrndale, Massachusetts, June 7; Sharon, Massachusetts, 

 July 7; Apponaug and Buttonwoods, Rhode Island, June 21; Eo- 

 wayton, Connecticut, June 15; Clementon, New Jersey, May 30; 

 Westville, New Jersey, June 27 ; Erie County, New York, June 7 to 

 July 1; Lafayette, Indiana, June 17; Dyke, Virginia, May 28; and 

 Orillia, Ontario, July 18. 



The female of this, or what I take to be the female, has the 

 abdomen wholly green; fore coxae, femora, tibiae, and tarsi wholly 

 yellow; middle and hind coxae yellow, more or less blackened on 

 outer surface. The joints of the tarsi vary in length, but the 

 second joint of hind tarsi is about two-thirds as long as the first ; in 

 the average specimens the joints of the tarsi are about as follows: 

 Fore tarsi 29-9-8-5-5; middle trasi, 31-16-12-8-7; hind tarsi, 

 29-17-8-4-5. In one large specimen the joints of fore tarsi are as 

 40-15-10-7-7, and hind tarsi as 40-26-18-10-7. 



If this is not the female of calcitrans^ there do not seem to be any 

 other females in my hands that would belong to that species and 

 no male to go with these females. We have these females from 

 Lafayette, Indiana, June and July; Wellesley, Massachusetts, July 

 18 ; Colden, New York, August 9 ; Portage, New York, July 1 ; and 

 Orillia, Ontario, July 18. 



26. ARGYRA SETIPES. new species 



Male. — Length, 4-4.7 mm. Face and front silvery white, the 

 former narrow. Palpi and proboscis black, the former with yel- 

 lowish hairs. Antenna (fig. 22) black; first joint with several stout 

 hairs above; third joint brown, three times as long as the first two 

 taken together; arista scarcely as long as the third joint. Lateral 

 and inferior orbital cilia whitish, the minute black upper cilia reach 

 down one-third the eye height. 



Dorsum of thorax and the scutellum dark shining green, the 

 former with abundant silvery white pollen on the anterior two- 

 thirds; scutellum with one pair of large marginal bristles. Abdo- 

 men covered with silvery white pollen; first segment black; second 

 yellow with anterior and posterior margins and a connectin'^^ 



