74 DIPTERA OF NORTH AMERICA. [PART II. 



ones, including the tip of the hind tibiae black ; hind femora ciliated 

 with yellowish hairs ; hind tibiae armed with long bristles ; fourth 

 longitudinal vein of the wings not broken. Long. corp. 0.23 0.24. 

 Long. al. 0.25. 



SYN. Dolichopus setosus LOEW, Berl. Ent. Zeitschr. VI, 213, 63. 



Green, shining. The narrow face white. Antennae black, the 

 lower edge of the first joint brownish; third joint ovate, not 

 rounded at the tip. Front rather dark green, but little shining. 

 Cilia of the inferior orbit whitish. Lamellae of the hypopygium 

 of medium size, broad, rather rounded, white with narrow border, 

 fringed on the upper and apical margin with black bristles, the 

 latter but little jagged. Fore coxae pale yellowish, dusted with 

 white ; their short pubescence near the tip and upon the inner 

 half of their front side black. Middle and hind coxae blackish, 

 with pale yellowish tip. Feet pale yellowish ; the hind femora have 

 but one bristle before the tip and are ciliated with long yellowish 

 hairs upon the under side ; the hind tibiae are black at the tip and 

 have upon their upper, as well as upon their under side, longer 

 bristles than usual ; I am not able to distinguish 'a glabrous spot 

 upon their hind side, but at the tip of the upper side there is a 

 short pale line. Fore and middle tarsi from the tip of the first 

 joint, hind tarsi entirely, black. Wings grayish hyaline ; costa at 

 the tip of the first longitudinal vein distinctly, but not strikingly 

 thickened ; the last section of the fourth longitudinal vein mode- 

 rately inflected upon its middle ; the hind transverse vein perpen- 

 dicular. 



Nab. Massachusetts. (Le Baron.) 



42. D. incisuralis LOEW. and 9. Viridis vel aeneo-viridis, 

 facie alba, antennis nigris, ciliis oculorum inferioribus albidis, tegula- 

 rum ciliis nigris, pedibus flavis, femorum posticorum apice concolore, 

 tarsis anticis inde ab articuli primi apice nigris, in mare simplicibus, 

 alarum vena longitudinal! quarta non fracta. 



Green or bronze-green ; face white ; antennae black : cilia of the inferior 

 orbit whitish, cilia of the tegulse black, feet yellow, the tip of the hind 

 femora not darker; fore tarsi from the tip of the first joint black, plain 

 even in the $ ; fourth longitudinal vein not broken. Long. corp. 0.17. 

 Long. al. 0.16. 



SYN. Dolichopus incisuralis LOEW, Neue Beitr. VIII, 25, 28. 



Green or bronze green, well preserved specimens purer green, 



