FAM. EMPIDID/E 231 
4. Halteres reddish; veins feebly undulating; kneesblack , . . . . . . . . . e « 5, 
Halteres with black knob; veins not undulating; 
Tori biMdsce- femora crow seruauit ed reri et bsé eene sie un 6. 
5. 'Thorax bivittate with brown ; stigma almost obsolete, 
anterior crossvein at basal fourth of thé discal cell. Hvp&RopRowiA coNJUNCTA, Loew. 
"Thorax with the median white vitta only; stigma 
distinct, anterior crossvein at the basal third of the 
discalcell.. . . . j . . . . . . HypnRODROMIA TAOS, Melander. 
6. Discal cell blunt; hind tibia Setogd os D IE sxaVI AEN LUI SML TA Is qa Tes "n. 
Discal cell with narrow end; hind tibiz not setose; 
third submarginal cell four times as long as its 
costal breadth... . . . . . . . . . . ^ HypRODROMIA LONGIFURCA, nOV. Sp. (1). 
7. Stigma well developed aud distinctfrom the cloudings, 
second submarginal cell two and a half times as 
long as its breadth along the costa; knees black. .  ProBaLrA LEcTA, Melander. 
No stigma, second submarginal cell four times as long 
as its breadth à glong thecosta; knees reddish . . . HyvpmopRowiA BINOTATA, Loew. 
8. Acrostichals Diseribit, scutellum with discal setulc; 
second posterior cell acutely pointed; face deeply 
excised at oral margin; femora and tibie without 
Sn E e eis ecc. Ns EUN £C PHILONUTRA SIMPLEX, L.06W. 
orbstcHals wanünes fáceless-deeply exclsed s 0E. c. s ey d a m ee 9. 
. 9. Legs entirely black; halteres black; veins not undu- 
IlnhhBronM uu oos rupi I QM QE MI M. I E (crees cuneos l9. 
Legs brown or reddish, or at least the knees brownish; 
discal cell equal to or shorter than the second 
DOSteripp- uu A mE cupere Pg riqe3cwote oS cM iaBA 
10. Discal cell longer than the second posterior; thorax 
not vittate; stigma faint; front femora with a sub- 
apical group of setule, middle femora setulose, 
DRIUONSOSEDIRR ue I cR Mm Qu cedes ead us M soc EI. 
Discalcellequalto orshorterthanthesecondposterior . . . . . . . . . . . . . I2. 
1r. Empodium of posterior legs short but visible; wings 
clear hyaline, anal vein stronger. . . . . . . BERGENSTAMMIA DOLICHERETMA, Melander. 
(1) Clinocera (Hydrodromia) longifurca, nov. sp. — Male. Length3.5mm. Dark olivaceous brown above, 
slaty gray below. Front uniformly dark brown, face white pruinose, a narrow crescent-shaped mark beneath the antenne 
extending to the orbits, vertical bristles moderately coarse; cheeks very small, separated from the face; third joint of the 
antennze oval, arista rather slender, less than twice as long as the antennze; palpal hairs inconspicuously black. "Thorax with 
two dark vittz; pectal hairs very short and sparse ; all the hairs of the abdomen pale; ventral piece of the epipygium conical, 
middle valves small, dorsal valves long and narrow, shining black. Legs entirely black, hairs of the front coxe short and 
sparse, front tibiz nearly as long as the femora, front femora with seven fine short black sete and six white hairs, all uni- 
formly distributed, both sides of the hind tibiz with short sete along the outer half, empodium prominent and yellow. 
Halteres black. Wings rather strongly brown, veins firm and blackish, three submarginal cells, the second narrow and 
four times as long as its width along the costa, discal cell three times as long as broad, a little shorter than the sessile second 
posterior cell, its posterior oblique crossvein strongly curved so that the apex of the discal cell has parallel sides, sections of 
the fifth vein equal, anal crossvein recurved, anal vein short and rather faint. 
Type from Mount Washington, New Hampshire, Mrs. Annie T. Slosson, collector. Two females from same locality 
were collected by C. W. Johnson, 4 July, 1914. A female in the collection of C. W. Johnson, from Nain, Labrador, has no 
setze on the femora and the discal cell is a trifle less drawn out at the apex. 
