232 ; DIPTERA 
Empodium of posterior legs wanting; wings infumated, 
analvein weak. . . . . . « . ..« . ww» DEROENSTANIIA PRUNNIPENNIS, nov. sp. (). 
12. Frontfemora with conspicuous spinoussetule. . . . . : . . . . . .. . . . 13 
Front femora with no orbutfewsetule ..... . . ... . . . . $3 4.14 4 2e. 18 vcr 
13. Face entirely white; stigma moreorlesevident ... . ,.. 70.9. . EE 14. 
Face darker in the middle or yellow above, vertex 
without a dark picture; thorax at most weakly 
bivittate; no stigma (if stigma is well denoped end i d. 
wings are spotted see lade (Y)... 5. 3 4022.52 LM 
14. Vertex pictured; thorax not vittate; front tibie qj dus ; 
with a long comb of hairs; arista longer than the 
antenne . . . . . X . . 9. ^ CHAMADIPSIA COMATA, QOV. Spa 
Vertex uniformly brown; thorax bivittate; arista as ? 
longastheantenng. . . . . . . . . . . CIINOCERA PRASINATA, nov. sp. (3). 
LH 
(1) Clinocera (Bergenstammia) brunnipennis, nov. sp. — Male. Length 5 mm. Front, vertex and upper x 
occiput dark brown, ocellar tubercle flanked by a weak cinereous spot, face entirely white, rather narrow. not carinate or 
tuberculate, the lower edge nearly transverse, distinctly separated from the cheeks which measure about one-eighth the - 
eye-height; upper occiput with bristles and setulze, sides with silky yellow hairs, lower part bare; palpi with short black - 
hairs, proboscis rather large; third joint of the antennae oval, shorter than deep. without an end-process, the arista more — 
than twice as long as the antenna, slender and tapering. "Thorax not vittate, dull brown above, including the metanotum, 
bristles rather weak, five or six dorsocentrals, no setulz,, only one notopleural; pectus nearly bare. Sides of the abdominal 
segments marked with cinereous, centrally brown, epipygium small, ventral piece and base of the penis thickened, black, —— 
middle valve small, shining apically, dorsal valve narrow, corneous, shining black, incurved apically, the inner surface - 
rugose. Legs black, hairs of the front coxz short and pale, front femora of the male with a row of flexor setulz on the basal - 
half and distally with an irregular group of thorn-like setze, front tibiae nearly as long as the femora, denticulate within, 
posterior femora with loose irregular short but strong setze, middle tibiae with scattered setulz, hind tibize with a preapical 
pair of bristles, pulvilli wanting, empodium of the front legs one-half as long as the claws and brown, of the posterior 
legs microscopic, claws black. Wings short and narrow, with a brown tinge, stigma weak, brown, but distinct, basal 
bristle short, costal setulze small, first vein ending at the middle, two submarginal cells, the second small, discal cell blunt, - 
long and narrow, longer than the sessile second posterior cell, sections of the fifth vein 2 : 1, anal cell with curved apex, 
anal vein very faint but nearly reaching the margin. 
Five specimens ; Palo Alto, California, August, received from Professor Doane. ge 
(2) Wiedemannia (/Chamaedipsia) comata, nov. sp. — Male, Length 4 mm. Of the usual cliiibeods bucem 
and slaty color, the front tibiz c bearing a row of long hairs on the apical half, front pictured, Face entirely white prui- 
nose, carinate below, the oral margin not notched at the middle, cheeks one-fourth the eyeheight, notched, but separated 
from the face only by a suture; front and vertex velvety black, but the front marked with a white spot almost enclosing the 
ocellar tubercle and the vertex with a post-ocellar stripe which meets the gray of the occiput ; upper bristles short but strong 
and with a few intermixed setulz, lower bairs long fine sparse and yellow; third antennal joint rounded oval, without a 
terminal process, the arista thick, even enlarged apically, one-half longer than the antenna; hairs of the palpi black and 
conspicuous, Two or three minute acrostichal setulz in front, six dorsocentrals, four scutellars and a few discal and 
marginal fine setulze, a group of five notopleurals, metapleural hairs numerous and yellowish-brown, pectal hairs sparse. 
Discal setulz of the abdomen sparse and black, ventral and lateral hairs yellow; epipygium large, erect, ventral piece 
almost cylindrical, the penis blackish, middle valves convex, oval, bearing black hairs, surmounted by the irregular five- 
pronged jet black upper valve. Hairs of the front coxae short and yellow, legs black, of the male the front femora provided 
with a dense brush of setze at the basal third of the under side beyond which are a few spine-like setze, the front tibize with 
an extensor row of very long closely placed black hairs and within with numerous stiff setze and with preapical denticles, 
posterior femora almost bristleless, hind tibize with a few short stiff preapical setze, in the female the front legs lack the 
excessive ornamentation, the inner side of the femora with loose but stiff setze and the under side of the tibize with minute 
closely placed setulzs, empodium yellow and.long, claws entirely black. Wings very long, slender, with light brownish 
tinge, basal bristle small, costal setule minute, stigma very faint, first vein ending at the basal two-fifths of the wing, two 
submarginal cells, the second long and rather narrow, discal cell narrow, not pointed, three-fourths as long as the second 
posterior, sections of the fifth vein nearly equal, anal cell apically with a uniform curve, anal vein thin but strong, vanishing 
half-way to the margin. 
Four specimens of this interesting species were laken by Professor J. M. Aldrich on Mount Rainier, Washington, 
August 3, 1905, at an altitude of 50ooo feet. 
(3) Clinocera prasinata, nov. sp. — Male ' Length4 mm. Olivaceous grecn, changeable in color from cinere- 
ous along the flanks to brownish dorsally. Face silvery white, front brownish, more gray when viewed from behind, no 
