30 
large spot on vertex extending over occiput, mesonotuin, metanotum, 
broad stripe on each dorsal segment of abdomen, not extending to 
lateral or posterior margin, black, inclining to brown on abdomen; veins 
light yellowish brown ; stigma almost hyaline. 
Three females and three males. Nevada, California, Montana, and 
Vancouver Island. (Colls. Am. Ent. Soc. and U. S. Nat. Mus.) 
The male from Montana was placed by Cresson with his types of 
agilis, from which it is easily separated by the character of the claws, 
and from general structural characters may be safely referred to 
nevadensis. 
8. Pontania excavata new species. 
Female. — Length 4 mm.; moderately slender, glistening; clypeus nar- 
rowly and rather deeply incised; lobes rounded; mouth parts with 
rather long hairs; walls about ocellar basin distinctly defined; frontal 
crest widely broken by the extension of the shallow antennal fovea 
posteriorly into ocellar basin; antennae short, joints 3 to 5 subequal, 
third slightly longest; sheath rather robust, strongly convex on upper 
margin and distinctly excavated on lower, acuminate but not sharply 
pointed, hairs long, scattering; claws deeply divided, rays equal and 
scarcely divaricating; intercostal vein nearly interstitial with basal, very 
slightly inclined; second recurrent interstitial with second transverse 
cubital. Color black; mouth parts, extreme angles of pronotum, 
tcgulae, tips of coxa', and balance of legs for the most part resinous; 
upper and lower edges of femora, tips of posterior tibia', and tips of tarsi, 
extending on the posterior pair to the tip of the basal joint, brownish; 
antennae somewhat lighter beneath, especially toward tip; veins yel- 
lowish brown; stigma at base and costa at base and apex hyaline. 
3hde. — Agrees in general with the female; ocellar basin even more 
sharply defined and the frontal crest unbroken; venation normal. 
Color as in female, except that the legs are lighter and the central por- 
tion of the abdomen beneath is inclined to yellowish; antenme distinctly 
fulvous beneath; joints long, nodose at tips. 
Four females and one male. California, Colorado (C. P. Gillette), and 
Yeta Pass, Colo. (Colls. U. S. Nat. Mus. and Am. Ent. Soc.) 
0. Pontania resinicola new species. 
Female. — Length 5.5 mm.; rather robust; clypeus deeply, angularly 
emarginate; lobes triangular, rounded at tips; mouth parts with very 
few and inconspicuous hairs, shining; frontal crest very broadly and 
bulbously elevated, semicircular, shallowly notched at center; ocellar 
basin not distinctly limited laterally, or lateral walls wanting; antennal 
fovea elongate; antennae short, filiform, third joint longest; claws 
deeply bifid, rays nearly parallel; sheath moderately broad, very 
slightly sinuate on lower margin, tapering regularly to apex, armed 
