176 DIPTERA OF NORTH AMERICA. [PART III. 



portion bear some scattered, short, neither numerous nor erect 

 hairs ; the little stripes running down from the vertex along the 

 orbits of the eyes and ocellar triangle are of a shining metallic- 

 green; the latter is somewhat distant from the vertex. Antenna? 

 rather deep black; face and clypeus moderately shining, bluish- 

 black ; the lower orbit, however, reddish-brown, with a narrow 

 white border. Palpi and proboscis dark-yellow. The thorax, 

 the moderately convex scutellum, and the abdomen shining 

 metallic-green ; the latter, however, becomes more opaque and 

 darker towards its end. The fore coxa? altogether, the second 

 joint of the posterior ones and the feet of a rather dark, saturate 

 yellow coloring, but by no means red ; the front tarsi altogether 

 and the tip of the posterior ones brownish-black. Wings narrow, 

 somewhat grayish-hyaline ; the veins are tinged with yellow at 

 the basis and in the proximity of the anterior margin, as far as 

 the black spot on the apex ; this gives to those parts of the wings 

 a yellowish coloring; the other veins are blackish; a large 

 brownish-black spot on the apex of the wing occupies almost one- 

 quarter of the length of the wing and extends beyond the fourth 

 longitudinal vein. The small and narrow stigma is yellowish. 

 The small crossvein generally lies only a little beyond the end of 

 the stigma and very little beyond the middle of the discal cell ; 

 the last section of the fourth longitudinal vein is perceptibly 

 longer than the interval between both crossveins, and gently con- 

 verges near its end towards the third vein ; the posterior cross- 

 vein is always perpendicular; the posterior angle of the anal cell 

 acute. 



Hab. United States, not rare (Osten-Sacken). 



2. E. varipes Loew. J. — (Tab. IX, f. 23.) Viridis, femoribus nigris, 

 genibus tibiisque luteis, alarum apice nigro. 



Green, femora black, knees and tibise yellow; wings witb a blackish apex. 

 Long. corp. 0.25 ; long. al. 0.12. 



Syn. Eumetopin varipes Loew, Berl. Ent. Zeitscbr. IX, p. 1^1. 



Eumetopia varipes Loew, Berl. Ent. Zeitschr. XI, p. 323, Tah. II, f. 26. 



Very like E. rufipes, but easily distinguished on account of 

 the different coloring of the feet. Front almost black. The palpi 

 of the only specimen in my possession seem to be yellowish- 

 brown. Scutellum more flattened than that of E. rufipes. 

 Coxa? and femora black with a bluish-green metallic reflection; 



