42 
wanting; frontal crest sharply defined, prominent, slightly notched in 
the center; antennal fovea very minute, almost wanting, circular; 
antenne longer than head and thorax, joints 3 and 4 subequal, joints 3 
to 5 nodose at tips; procidentia projecting more than its width beyond 
terminal segment; hypopygium narrow, rounded at tip; claws deeply 
cleft; third cubital cell very short, quadrate; upper discal cell of hind 
wing not exceeding lower. Color black; elypeus, mouth parts, angles 
of pronotum, tegulie, hypopygium, and legs, except bases of coxie, yellow- 
ish ferruginous; tips of anterior tarsi faintly and tips of posterior tibize 
and their tarsi more strongly infuscated; antenne fulvous beneath; 
veins dark brown; stigma unicolorous, brown; costa lighter at extreme 
base. 
Two males, one reared (?) from willow gall. Michigan. (Coll. U.S. 
Nat. Mus.) 
28. Pontania placenta Norton. 
1867. Nematus placentus Norton. Trans. Am. Ent. Soc.,1, p.215. (Cat., etc., p. 75.) 
Male.—Length 4.5 mm.; not very robust, shining; clypeus very 
broadly excavated, lobes small; vertex rounded, smooth, with a deep 
furrow beyond lateral ocelli; ridges limiting ocellar basin wanting or 
indistinct, as also frontal crest; antennal fovea large, very shallow, 
indistinetly limited; antenne slender, not much longer than head and 
thorax; claws microscopically cleft at apex; procidentia not or scarcely 
projecting. The following veins are interstitial: Intercostal with basal, 
second recurrent with second transverse cubital and outer veins of 
discal cells of posterior wings. Color of antenne, large spot on head 
about ocelli, occiput, mesonotum and metanotum, abdomen above except 
narrow lateral edge, more or less of metepisternum, and bases of pos- 
terior cox black; balance of body yellowish ferruginous. 
One male. Canada. (Coll. Am. Ent. Soe.) 
29. Pontania pallifrons Cresson. 
1880. Nematus pallifrons Cresson. Trans. Am. Ent. Soc., VII, p. 6. 
Male.—Length 5 mm.; moderately robust; clypeus almost squarely 
truncate; mouth parts with short white hairs; vertex smooth, shining; 
ocellar basin distinetly defined; frontal crest rather large, unbroken; 
antennal fovea very small, circular, more deeply excavated at lower 
end; antenne not much longer than head and thorax, robust and 
tapering; claws large, deeply divided, inner ray much shorter than 
outer; apex of abdomen not strongly recurved; procidentia short, 
strongly constricted at base, apical angles acuminate; cerci rather 
long, spindle shaped; venation normal, except that the intercostal vein 
is at right angles to costa; stigma very elongate, narrow. Color black, 
shining; face below ocellar basin, orbits, pronotum, tegule, all of 
venter, and legs yellowish ferruginous; metepisternum and extreme 
