264 A. L. MELANDER. 



Hilara quadrivittala Meigen. 

 Syst. Besch., iii, p. 7. 



Black, thorax cinereous, with four fuscous vittps; halteres white; front meta- 

 tarsi of the male thick, oblong. Head cinereous. The outer thoracic vittse 

 abbreviated in front. Abdomen and legs black. Wings hyaline, with a brown- 

 ish margin, at the tip a little darkened. Abdomen of the male piceous, the hypo- 

 pygium globose, reaching back on the dorsum of the abdomen. Tibiae bristly. 

 4 mm. 



Europe, Alaska (Kincaid). 



Hilara umbrosa Loew. ' 

 Cent, ii, 34. 



Head black, ciuerascent, with whitish pollen, except for the front. The first 

 two joints of the antennse reddish, fuscous above, the third black. Palpi fusco- 

 testaceons. Dorsum of the thorax subcinerascent, the pollen sparse, closely 

 black-pilose. Abdomen concolorous with the thorax, with short black pile. 

 Coxse and legs pale testaceous, the posterior tibiae and all the tarsi dark grayish. 

 Wings cinereous, darker in the outer half, stigma blackish. 4.6 mm. 



Illinois (Le Baron). 



One male ; Wood's Holl, Massachusetts, is probably the same as 

 Loevv's species. It is characterized thus : 



Vertex opaque black, face cinereous; proboscis as long as the head, labella ex- 

 tending to the tip of the proboscis; palpi directed forwards, fuscous, with long 

 hairs below. Thorax with a few short hairs, serially arranged and parted out- 

 wardly from the middle ; scutellum with six long and several more short bristles. 

 Hypopygium pedunculate, compressed, black, lamellae widely opened, filament 

 long, slender, extending forward, entirely visible, apically fuscous. Legs rather 

 stout, luteo-fuscous, tarsi dusky, closely covered with short, dense, dusky hair; 

 the inferior edges of all the femora with short black bristles, each tibia with 

 several long, slender, black bristles on the outer side; coxae plumose, fore and 

 middle ones anteriorly and hind ones outwardly, with dense black hairs; front 

 metatarsi a little longer than the three following joints, but little thicker than 

 the tip of the tibia. Wings but little darker apically. 



Hilara feinorata Loew. 

 Cent, ii, 35. 



Head black, opaque, antennae and palpi black. Thorax and abdomen black, 

 shining, with very short pubescence. Legs black, the knees, apex of the front 

 tibiae and the front tarsi brown, the posterior tarsi often fuscous, sometimes 

 lighter; the front femora of both sexes much thickened, the male front meta- 

 tarsi thick. Halteres black. Wings hyaline, the veins fuscous, stigma ciueras- 

 cent, very faint. 2.6 mm. 



Maryland (Osten Sacken), New Jersey, Ohio, Wisconsin. 



Hilara velutiua Loew. 

 Cent, ii, 36. 



Wholly black. Head velutinous, black-pilose, antennae and palpi black. 

 Thorax opaque, velvety, black-pilose. Scutellum moderately shining. Abdo- 



