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6. Pontania mellina Cresson. 
1880. Nematus mellinus Cresson. ‘Trans. Am. Ent. Soc., vir, p. 19. 
Female.—Length 5.5 mm.; very robust, shining; clypeus distinetly 
but rather broadly emarginate; lobes short, broad, rounded; ocellar 
basin deeply excavated; sides and frontal crest strongly raised, but 
‘ather thick and rounded, the former somewhat broken; antennal fovea 
deep, not sharply defined; antennz scarcely longer than head and 
thorax, slender, joints 3 and 4 subequal; venation in general normal; 
intercostal very near basal; the outer veins of discal cells of hind wings 
interstitial; stigma not very broad, tapering from oval base circularly 
to apex; sheath sharply acuminate, fringed with rather long hairs; 
cerci long, scarcely tapering; claws very minutely notched at extreme 
apex. Color yellowish, tinged with ferruginous, a little darker around 
vertex, mesonotum, and mesepimera; antennie, small spot about ocelli, 
sometimes limited to ring about each ocellus, minute spot on oeciput, 
spot on lateral lobes of mesonotum, on either side of mesoscutellum, 
apex of latter, and most of metanotum except basal plates black; 
dorsal margin and tip of sheath brownish; veins yellowish brown; 
stigma and costa yellow, unicolorous. 
Two females. Nevada. (Coll. Am. Ent. Soc.) 
This species, though somewhat larger, is very closely allied to agilis 
Cresson. 
7. Pontania nevadensis Cresson. 
1880. Nematus nevadensis Cresson. Trans. Am. Ent. Soc., vit, p. 9. 
Female.—Length 4.5 to 5mm.; very robust, shining; vertex slightly 
roughened; clypeus broadly, shallowly excavated; hairs of clypeus and 
labrum almost wanting; sides of ocellar basin very sharply raised; 
frontal crest large, distinct, unbroken; antennal fovea circular, rather 
deeply excavated; antenne short, not as long as head and thorax, 
joint 3 very slightly longer than 4 and 5; sheath broad basally, strongly 
acuminate; cerci moderate, tapering; claws very large, deeply cleft. 
Color sulphur yellow; antenna, quadrate spot on vertex, extending 
back over occiput with lines running to base of antennie, mesonotum, 
metanotum, and stripe on basal segments of the abdomen becoming 
obsolete after the fourth or fifth segment black; spot beneath base of 
wings and upper margin and apex of sheath brownish black; antennie 
inclined to fulvous beneath toward tips; veins yellowish brown; stigma 
lighter, except lower apical margin; costa lighter at base. 
Male.—Length 4.5 mm.; very slender, graceful; antennze nearly as 
long as entire body, joints 3 to 5 subequal, fourth a little longer than 
third; procidentia projecting about half its length; legs long; claws 
not very large, but deeply cleft. Color resinous yellow, inclined to 
ferruginous on the thorax beneath; antennie above at base and scape, 
