﻿June, 1895.] CoQUILLETT. DESCRIPTIONS OF TaCHINID/E. 5Y 



Hypostena variabilis, sp. nov. 



2 — Head black, front at vertex slightly broader than either eye, vitta next the 

 antenntT2 sub-equal in width to either side of the front, frontal bristles descending to 

 tip of second antennal joint, two pairs of orbital bristles; face in profile strongly 

 convex, the sides bare, ridges bristly on lower two-fifths or less, vibrissa inserted at 

 the oral margin ; cheeks one-fourth as broad as the eye-height. Antennce black, 

 nearly as long as the face, the third joint about four times as long as the second, 

 nearly four times as long as broad ; arista thickened on the basal third, the penulti- 

 mate joint broader than long. Proboscis black, the portion beyond the basal articula- 

 tion much shorter than height of head, labella yellowish ; palpi clavate, yellow. 

 Thorax black, gray or yellowish pollinose, with four black viltce, three post-sutural 

 macrochffitae ; scutellum black, with three pairs of long marginal macrochaetx and 

 sometimes a very small apical pair. Abdomen black, bases of last three segments 

 grayish pollinose ; first segment witli a marginal pair of macrochcetae, second with 

 a marginal and usually a discal pair, third with a marginal row of eight and usually 

 a discal pair, fourth with a discal row of eight and a sub-marginal row of six. Legs 

 black, claws and pulvilli much shorter then the last tarsal joint. Wings hyaline, 

 third vein bearing a few bristles at the base, the others bare ; apical cell ending 

 slightly before the wing-tip, open or closed in the margin, hind crossvein nearly mid- 

 way between the small crossvein and the bend, the latter arcuate, small crossvein 

 slightly beyond the middle of the discal cell. 



$ — Differs from the in J having the front only as broad as either eye, no 

 orbital bristles, and the claws and pulvilli of front tarsi as long as ;he last tarsal 

 joint. Length 4.5 to 6.5 mm. 



Illinois (Dr. Nason), New Hampshire (Mrs Slosson) and Mary- 

 land. One male and fourteen females, June to September. 



Hypostena barbata, sp. nov. 



$ — Same as the above description oi variabilis with these exceptions: Front 

 e([ual to either eye, vitta next the antenna; one-fourth wider than either side of front, 

 face in profile convex on upper part, concave below, ridges bristly almost to the mid- 

 dle. Palpi black. Discal pair of macrochcetos on the second and third abdominal 

 segments always present. 



9 — Differs from the $ as follows : Front scarcely over half as wide as either 

 eye, vitta not wider than either side of front, no orbital bristles, face evenly concave, 

 claws and pulvilli as long as the last tarsal joint. Length 5 mm. 



New Hampshire and Southern California. Two males from the 

 former locality, received from Mrs. Slosson, and two females from the 

 latter locality, taken by the writer in March. 



Hypostena aenea, sp. nov. 



9 — Differs from the above description of variabilis as follows : Face in profile 

 strongly concave, only one or two bristles above each vibrissase. Third joint of an- 

 tennae only three times as long as broad, greatly widening to the apex ; arista thick- 



