30 DIPTERA OP NORTH AMERICA. [PART II. 



white ; cilia of the inferior orbit black ; cilia of the tegulae white. Long, 

 corp. 0.17. Long. al. 0.15. 



STN. Dolichopus laticornis Loew, Neue Beitr. VIII, 12, 2. 



Face white, rather broad for a male. Antennas black; the 

 third joint large and broad, ovate ; arista inserted upon its second 

 third. Front metallic green. The cilia ^of the inferior orbit 

 black. Lamella? of the hypopygium rather small, of a trapezoidal 

 form, the upper and apical margin are but very little bordered 

 with black ; their margin is not jagged but only fringed with 

 minute black hairs. Tip of the coxa? yellow. Femora black, 

 with a faint greenish reflection and yellow tip. Tibiae yellowish. 

 (The middle tibiae are wanting in the described specimen.) The 

 tip of the hind tibise, which are not thickened at all, is black. 

 Fore tarsi from the tip of the first joint black ; hind tarsi entirely 

 black; the first joint is beset with a few thorn-like bristles. Hind 

 femora before the tip with a stout "bristle. Tegulse with whitish 

 cilia. Wings hyaline ; the costa but scarcely thickened about the 

 tip of the first longitudinal vein ; the end of the fourth longitu- 

 dinal vein converges towards the third. 



Hob. Connecticut. (Norton.) 



B. Cilia of the inferior orbit pale. 



3. D. setifer LOEW. . Obscure viridis, pechim nigrorum tibiis an- 

 terioribus posticarumque dimidio basali flavis, facie alba, ciliis oculorum 

 inferioribus tegularumque ciliis albidis, metatarso postico valde setoso. 



Dark green ; feet black, the four anterior tibise and the basal half of the 

 two hind ones yellow ; face white ; the cilia of the lower orbit and of the 

 tegulse whitish ; the first joint of the hind tarsi with many thorn-like 

 bristles. Long. corp. 0.17. Long. al. 0.15. 



SYN. Dolichopus setifer Loew, Neue Beitr. VIII, 12, 3. 



Face silvery-white, narrow. Antennae black, third joint short. 

 Front- metallic green. The cilia of the inferior orbit whitish. 

 The lamellae of the hypopygium whitish ; their long apical margin 

 is finely jagged only below and fringed with long bristles, above 

 only finely hairy ; its lower corner has a narrow black border. 

 The black femora show a green reflection and have a clayish-yel- 

 low tip ; the hind femora have a bristle before their tip and are 

 ciliated on their under side with long black hairs ; the four anterior 

 tibiae are clayish-yellow ; the first joint of the four anterior tarsi 



