FAM. EMPIDIDJE 233 
15. Center of the face with a black spot; wings slightly 
infumated, auxiliary cell dark; sete of the front 
femora and the hind tibie less pronounced basally. . . . . . . JAQUPE UM NOE PEA ENOU f OR 
Face unicolorous; wings hyaline; front femora with 
about nine uniform short sete, bristles of the hind 
tibize on the apical three-fifths . . . . . . . CLINOCERA OLIVACEA, nOV. sp. (1). 
16. Palpi with numerous black hairs; under side of the 
front femora c with many minute thorn-like setulze 
on the basal half, hind femora with three or four 
(0mm OR us cov INN NONE EE D dtp TERM M qc E UNE rA 
Palpi with short sparse pale hairs; front femora 
without thorn-like setule, hind femora with two 
subapicalflexor bristles . .. . . . . . . . QCHAMADIPSIA MINOR, nov. sp. (2). 
17. Thorn-like setulz of the front femora not in a regular 
row, with some coarse sete intermixed; facial 
tubercle distant from the oral margin, the center ot 
the face carinate beneath the tubercle, the upper 
part of the face brownish cf or cinereous Q. . . CHAMEDIPSIA HAMIFERA, nov. sp. (3). 
vertical bristles, the occipital series sparse; cheeks narrow, with complete suture, palpi large, clavate, with sparse short 
black hairs; third joint of the antennze ovate, shorter than broad, without an end-process, the arista thick and scarcely longer 
than the antenna. Viewed from in front the mesonotum is bilineate, the middle stripe not cinereous, five dorsocentrals, no 
setule, metanotum and pleurz cinereous, metapleural hairs dense and yellow, pectus and front coxz with sparse yellow 
hairs. Abdomen greenish cinereous; epipygium large, the lower piece large, conical and projecting, penis black, slender 
from its base, its middle third hidden, the apical deflected. part thin, middle lamelle broadly oval, erect, rather hairy, the 
upper pieces broad butshort, shining black. Legs black, more or less cinereous basally, front femora with regular biseriate 
short flexor bristles, front tibiz as long as their femora, with close uniform short flexor and extensor setulz, posterior femora 
without bristles, hind tibia with about ten extensor setule on the outer half, pulvilli and empodium moderately large. 
Calypteres blackish, with a pale fringe; halteres black. Wings with a slight infumation, veins strong and blackish, costal 
setule small, stigma very weak, two submarginal cells, third and fourth sections of the costa subequal, discal cell shorter 
than the sessile second posterior cell, sections of the fifth vein equal, anal vein a weak fold nearly reaching the margin. 
One specirhen, received from Dr. J. M. Aldrich, who collected it at Mono Lake, California, July 23, 1011. 
(1) Clinocera olivacea, nov. sp. — Female. Length 3.5 mm. Olivaceous brown, abdomen, pleurz and base of 
the legs cinereous-white, face and cheeks cinereous, separated by a suture, vertex brown, with strong ocellar vertical and 
occipital bristles, third joint of the antenne triangularly oval, as long as broad, without a process, the arista thick and 
slightly longer than the antenna; palpi with short brownish hair. Five dorsocentral bristles, no setulze, metapleural hairs 
pale yellow, | Prosternum and coxz with conspicuous golden hair, under side of the front femora with two series of about 
nine short setze disposed along its length, front tibiae nearly as long as their femora, outwardly with short uniform setze, 
posterior femora bristleless, hind tibize with about eleven extensor setze on the apical three-fifths, pulvilli and empodium 
moderate. Wings hyaline, veins weak, no stigma, costal setulae small, two submarginal cells, the second to the fifth costal 
sections proportioned 4 : 1 : 1.4 : 1.2, discal cell rather broad, a little shorter than the sessile second posterior cell, sections of 
the fifth vein proportioned r : 1.2, anal vein reflexed more than usual, the anal vein rather strong continuing as a fold almost 
to the margin. 
One specimen, Muir Inlet, Alaska, Trevor Kincaid, collector. 
(2) Wiedemannia (Chamaedipsia) minor, nov. sp. — Male. Length3 mm. Related to Zanifera, but differing 
as follows : face brownish cinereous, the lower sides when viewed from in front browner than the rest, when viewed from 
below concolorous, the dark central stripe and the carina less evident, margin excised; palpi with fewer and pale hairs; 
apical process of the third antennal joint less pronounced. No humeral setulz, metapleural and pectal hairs less developed. 
Front femora and tibiz without the flexor denticles, the front femora with nine sete uniformly distributed, no long yellow 
hairs. Discal cell three-fourths as long as the second posterior, anal crossvein less strongly recurved, the lower end of the 
anal cell obtusely angulate. 
One specimen, received from Professor O. A. Johannsen, who collected it at Irthaca, New York, 
(3) Wiedemannia (Chamzsedipsia) hamifera, nov. sp. — Male. Length 4 mm. Brownish above, the thorax 
not vittate, cinereous below. "Upper half of the face light brown in the male and cinereous in the female, sides below 
cinereous white, but slightly longer than broad between the antenne and the center of the tubercle, center tubercle black 
