80 
coxa?, tips of femora, tibiae except extreme tips, yellowish; tips of tibiae, 
especially posterior pair, tarsi, and palpi infuscated; wings hyaline; 
veins, including* stigma and costa, brown. 
One female. Nevada. (Coll. Am. Ent. Soc.) 
10. Amauronematus orbitalis new species. 
Female. — Length 7 mm.; exp. al. 15 mm.; rather slender; head and 
thorax finely punctured but more or less shining; abdomen more so; 
pubescence very minute; clypeus circularly, broadly, and rather deeply 
emarginate, lobes triangular, sharply pointed; frontal crest slightly 
broken; side walls of ocellar basin not very distinct; antennal fovea 
very minute, circular; antenna' very short, not nearly so long as head 
and thorax, third to fifth joints subequal; intercostal cross vein not 
half its length anterior to basal; third cubital cell not twice as long as 
wide at base. Dearly quadrate; outer veins of discal cells of hind wings 
interstitial, or nearly so; venation otherwise normal; stigma narrow, 
tapering; sheath large, upper edge straight; cerei very long, slender, 
scarcely tapering. Color black: upper and outer orbits very broadly, 
inner orbits narrowly, beneath base of antennae, clypeus, cheeks, outer 
angles of pronotum, teguhe. apices of coxa-, trochanters, inner and outer 
laces of femora, tibia-, tarsi, apex of abdomen beneath, yellowish ful- 
vous: face inclined to pallid; tips of tarsi, particularly posterior pair, 
fuscous: sheath and cerei dark brown, almost black; veins brown, 
except basal two-thirds of costa; stigma brown, somewhat lighter cen- 
trally, especially at base. 
Two females. Oregon and Colorado (Gillette). (Coll. U. S.Nat. Mas.) 
11. Amauronematus oregonensis new species. 
Female. — Length 7 mm.; exp. al. 15 mm.; head and thorax finely 
punctured; abdomen shining; clypeus very slightly, circularly emargi- 
nate: frontal crest large and broken; ocellar basin not very distinctly 
defined; antennal- fovea distinct, circular; antenna*, very slender, 
scarcely tapering, fourth joint longest; venation normal; stigma narrow, 
acuminate: sheath narrow, rounded; cerei slender, long, not tapering; 
cla w s deeply cleft, rays subequal. Color black ; triangle beneath anten- 
na', orbits broadly except narrowly on inner side, cheeks, clypeus, 
labium, bases of mandibles, palpi, angles of pronotum, tegula?, abdomen 
beneath, apical margin of penultimate and all of the last dorsal segment, 
coxae except at base, trochanters and legs whitish, the face being 
pallid and seinitransparent ; legs inclined to fuscous on upper and lower 
margins, and the tarsi strongly infuscated; sheath and cerei black, the 
venter more or less spotted with brown; wings hyaline; veins including 
costa except at extreme base, brown; stigma transparent along the 
center. 
Two females. Mount Hood, Oreg. (Coll. Am. Ent. Soc.) 
