300 A. L. MELANDER. 



part of the chest is beset with longer black bristles; abdomen black, shining, 

 legs tawny, beset with short black hairs and bristles; hips black; feet piceous 

 towards the tips; wings slightly tawny; wing ribs and poisers bright tawny; 

 veins piceous, tawny towards the base and along the fore borders. 4 nam. 



Nova Scotia. 



Eiupis laiiiveutriw Escholtz. 

 Wiedemann, Aussereurop. Zweifl. Ins., 2, p. 6. 



Fuscons; head black; thorax in front and abdomen with yellow hair. Head 

 below wholly bare; occiput with long black hairs. Eyes brown. Antennae 

 black, the first two joints with hairs at their tips only. Proboscis black ; palpi 

 yellow. Thorax grayish brown, with brown hairs on the dorsum, on the pleurae 

 with longer yellow hairs. Scutellum grayish brown, with a few black bristles. 

 Pectus grayish brown, with no hairs. Abdomen above dark brown, with fine 

 black pubescence; venter in the middle and plainly on the sides with long, dense 

 yellow hairs. Wings much longer than the body, somewhat yellowish, with 

 brown veins, those nearest the costa wholly yellow; the anterior branch of the 

 third vein strongly arcuate. Knob of the halteres yellow, the pedicel brown. 

 Legs reddish brown, with piceous tarsi, with fine black hairs; hind tibiae bowed ; 

 femora scarcely thicker than the tibiae. 8 mm. 



Alaska. Bering Isl. 



Einpis coloiiica Walker. 

 List Dipt. Ins., iii, p. 498. 



Body bright tawny, shining, smooth, beset with a few slender short black bris- 

 tles; eyes and feelers black ; lip tawny piceous towards the tip, much more than 

 half the length of the body; abdomen dark tawny, thinly clothed with short 

 black hairs and bristles; feet piceous towards the tips; wings with a tawny 

 tinge; wing-ribs tawny; veins brown, tawny towards the base; poisers pale 

 yellow. 6 mm. 



Nova Scotia (Redman). 



Einpis leptogastra Loew. 

 Cent, iii, 30. 



Female. — Slender, yellow, shining, rather bare. Head black, face and front 

 very narrow, concolorous; antennae slender, elongate, the third joint black, the 

 preceding fuscous. Proboscis slightly longer than the head, slender, yellow. 

 Dorsum of the thorax divided by a longitudinal black median vitta. Abdomen 

 marked with a basal black fascia on each segment, united by a black line, the 

 last segment black altogether. Legs with sparse fine pile, slender, the hind 

 femora thickened towards the apex and bearing black spines below ; the apex 

 and a median ring of the hind femora, the apical third of the hind tibiae and all 

 the tarsi black. Knob of the halteres infuscated. Wings rather long and nar- 

 row, cinereous hyaline, veins piceous, the third vein slightly incurved apically, 

 the anterior branch ascending perpendicularly. 4.5 mm. 



District of Columbia (Osten Sacken). 



Em pis ariiiipes Loew. 

 Cent, i, 32. 



Male. — Yellow, with short black pile. Eyes distant. Proboscis yellow, longer 



