M 
i 
Un 
FAM. EMPIDID/E 
22. Thorax with two conspicuous shining vitte; veins 
undulating, wings brown; legs without bristles; face 
broad and pure white . . . . . . . . . . CLINOCERA LINEATA, Loew. 
"Thorax pollinose, no shining vitte. . . . Wood NM eM nE D TU TDpM E EC E d rca 
23. Front femora with a basal group of setula, hind tibize 
Wit Hexor ssim wiugsquore or less Sspotled 47 2 US e di Rus res 244 
24. Thorax with a median cinereous line; upper part the 
face.darks LS 014.4 907 5 HYDRODROMIA:MACULATA, Loew. 
Thorax bivittate; face entirely silvery. . . . . . HyvpRopRowiA sraGNaLIs, Haliday. 
25. Thorax not vittate; face dark; wings uniformly 
subfuscous, costal setulz barely visible; three small 
flexor setule on the outer third of the hind tibiz; 
ánstathickened . . . . 4 .^. 2.2. v ACLINOCERA FUSCIPENNIS, Loew. 
Thorax bivittate; face entirely white . . . . NUDw T o ru yedATUeadu ie ERE eU So 7 VoM TM T 
26. Wings with a spot at the base of the second uds 
marginal cell and at the apex of the discal cell, the 
second submarginal cell as long as the second basal ; 
legs black, the knees brown . . . . . . . . HypnmopRowiA GENUALIS, Coquillett. 
Wings uniformly brown; second submarginal cell 
longer than the second basal; legs brown. . . .  PHuOBALIA BREVITIBIA, nov. sp. (1). 
Geographical distribution. 
SuBGENUS BERGENSTAMMIA 
brunnipennis, nov. sp. California. 
dolicheretma, Melander, Trans. Amer. Ent. Soc. Vol. 28, p.241 [1902] Idaho. 
(Clinocera); Kertész, Cat. Dipt. Vol. 6, p. 125 [1909] (Roóderia); 
Engel, Deutsche Ent. Zeitschr. 1918, p. 198 [1918] (Roederella). 
B. 
B. 
I. 
2: 
^ 
pulvilli and empodium moderate in size and brown. Halteres black, hairs of the calypteres sparse and brownish. Wings 
with a brownish tinge, a very faint darker cloud suffusing the crossveins, veins strongly brown, no costal setule, first 
vein ending beyond the middle of the wing, two submarginal cells, second to the seventh sections of the costa proportioned, 
4:1:1.2: 1: 1.8 : 1.9, discal cell much shorter than the broadly sessile second posterior cell, sections of the fifth vein, 
1 : 0.6, anal vein represented only by a very faint fold, anal crossvein strongly recurved. 
One specimen, Nelson, British Columbia, July 17, 1910. 
(1) Clinocera (Phaeobalia) brevitibia, nov. sp. — Length2.5 mm. Front, vertex and upper occiput a dark 
slaty brown, ocellar bristles long, a single row along the occipital and vertical orbits, one pair of central vertical bristles, 
setulae sparse, lower occiput nearly bare ; face cinereous, separated from the narrow cheeks, the lower margin transverse and 
not emarginate; hairs of the palpi minute, sparse, brown ; third joint of the antennze onion-shaped, with a distinct apical 
projection, arista thick, very slightly tapering, nearly twice aslong as the antenna. Dorsum dark brown, marked with two 
'velvety black vittze which are abruptly interrupted at the prescutellar depression, intervittal space a little more grayish 
anteriorly, a white spot in front of the wings, metanotum cinereous; five strong dorsocentral bristles, no setulze, pectus with 
a few hairs, upper pleure brownish. Abdomen entirely blackish gray, its hairs very sparse, epipygium small, incumbent, 
ventral piece conical, penis brown, middle valve oval, subshining, dorsal valve clavate, villose, only subshining. Legs 
including the coxz brownish, hairs of the front coxze sparse, in the male the front femora with about six spinous flexor setze, 
the front tibize about five-sixths as long as the femur and slightly shorter than the basal two joints of their tarsi, closely and 
minutely setulose within, apical half of the hind tibie setose on both sides, hind metatarsi with eight flexor setulee; in the 
female the front legs are devoid of the flexor bristling and the setze of the hind legs are much reduced. "Wings oval, with 
a decided brown tinge, stigma elongate, weak, basal bristle long, costal setulze minute, first vein ending at the middle of the 
wing, two submarginal cells present, discal cell blunt, as long as the broadly sessile second posterior cell, sections of the 
fifth vein nearly 3 : 1, anal crossvein recurved, no anal vein. 
Five males, one female; Olga and Tacoma, Washington, July and August. 
