60 DIPTERA OP NOETH AMERICA. [PART II. 



when it is seen from above or below. The first joint of the hind 

 tarsi with only two thorn-like bristles. Cilia of the tegulaa black. 

 Wings grayish-hyaline ; the last segment of the fourth longitudinal 

 vein is inflected before its middle but not broken. The wings of 

 the J* are somewhat narrower than those of the 9 , and have be- 

 fore the anal. angle a very remarkable large bisinuated excision, 

 so that the angle assumes the shape of an independent lobe-like 

 appendage. Lamella? of the hypopygium of moderate size, 

 rounded-ovate, whitish, with a rather broad black border, on the 

 upper and apical margin jagged and fringed with black bristles. 

 Nab. Sdtka. (Sahlberg.) 



29. D. pllimipes SCOP. $ and ?. Viridis, humeris concoloribus, 

 antennis rufis, articulo tertio prseter basim nigro, facie aurea, ciliis ocu- 

 lorum inferioribus flavis, tegularum ciliis nigris, pedibus flavis, articulo 

 tarsorum intermediorum primo maris setulis nigris pennato, alarum 

 vena longitudinal! quarta non fracta. 



Green, including the humeral callosity ; third joint of the red antennae 

 with the exception of its basis, black ; face golden-yellow ; cilia of the 

 inferior orbit yellow ; cilia of the tegulae black ; feet yellow ; first joint 

 of the middle tarsi of the feathered with black bristles ; fourth lon- 

 gitudinal vein not broken. Long. corp. 0.17 0.16. Long. al. 0.18. 



SYN. Musca plumipes SCOPOLI, Ent. Cam. 334, 895. 



Dolichopus pennitarsis, FALLEN, Dolich. 11, 16. MEIGEN, Zweifl. IV, 

 90, 29. MACQUART, Suites, I, 446, 34. STANNIUS, Isis, 1831, 63, 14. 

 ZETTERSTEDT, Ins. Lapp., 709, 9. STAEGER, Kroyer's Tidsskr. 30, 

 21. ZETTERSTEDT, Dipt. Scand. II, 541, 35. 

 Dolichopus plumipes WALKER, Dipt. Brit. I, 162, 16. 



Metallic-green, sometimes somewhat coppery. Antennae yel- 

 lowish-red, third joint, excepting its basis, blackened ; that of the 

 g ovate, with a rather sharp angle at the end ; that of the 9 

 shorter. Front metallic-green. The face reaches lower here than 

 in most other species of Dolichopus ; that of the g is rather nar- 

 row and golden-yellowish ; that of the 9 is broad and pale-gray- 

 ish, dusted with whitish-yellow. Palpi yellow. Cilia of the in- 

 ferior orbit yellow. Fore coxae yellow, with a black pubescence 

 anteriorly ; middle and hind coxae blackish, the extreme tip and 

 the trochanter yellow. Feet yellow. Hind femora with a bristle 

 before the tip. The middle tibiae are but slightly infuscated near 

 the tip ; the tip of the hind tibiae is somewhat blackish, this color 

 occupying but a narrow extent. Fore and hind tibiae plain in 



