90 
4, Nematus pergandei new species. 
Female.-—Length 7 mm,; exp. al. 15 mm.; very robust, short; head 
not broadened posteriorly; clypeus broadly, circularly emarginate; 
lobes broad, obtuse; frontal crest very large, obtusely rounded; lateral 
walls of ocellar basin sharply defined; basin filled by two tubercles; 
antennal fovea very broad, shallow; antennz little longer than head 
and thorax, very slender, scarcely tapering, joints 4 and 5 subequal, 
shorter than 3; sheath thick, squarely truncate, tubular; venation nor- 
mal; stigma ovate at base, tapering rather regularly toward the some- 
what truncate apex; claws very deeply cleft, rays nearly equal. Color 
luteous, shining; face below antenne, orbits, pronotum, most of venter, 
and legs, pallid; dorsal area of head, mesonotum, margin of abdomen 
above, basal half of mesepimera, and sheath reddish yellow; lateral 
margin of mesonotum, most of metanotum, broad stripe covering dor- 
sal center of the segments of the abdomen except the last, black; anten- 
ne brown, fulvous beneath; ocelli ringed with black and a small black 
or brownish spot just at base of each antenna; wings hyaline; veins 
light yellowish brown; stigma and costa yellowish, almost hyaline. 
One female. Washington, D. C.(?). (Coll. Am. Ent. Soc.) 
5. Nematus chloreus Norton. 
1867. Nematus chloreus Norton. Trans. Am. Ent. Soc.,1, p. 221. (Cat., ete., p. 83.) 
1872. Nematus chloreus Norton. Trans. Am. Ent. Soc., lv, p. 80. 
1888. Nematus chloreus Provancher. Add. Faun. Can. Hym., p. 348. 
Female.—Length 5 to 5.5 mm.; very robust; head and thorax finely 
punctured, opaque; clypeus nearly truncate; vertex smooth; lateral 
ridges of ocellar basin not very prominent, rounded; basin very shallow 
and indistinct; crest rather large, rounded; antennal fovea very shal- 
low, indistinct; antenne short, not as long as head and thorax, slender, 
tapering, third joint very little longer than fourth; stigma broad 
basally, tapering regularly nearly to apex; apex of costa very greatly 
thickened; sheath thick, short, scarcely projecting, margined with long, 
not very numerous curved hairs; cerci rather long, slender; claws 
large, deeply notched. Color yellowish ferruginous; mesonotum, mes- 
epimera, margin of abdomen dorsally, and sheath somewhat inclined 
to reddish; antenne, spot on either side of mesoscutellum, apex of 
same and metanotum except metascutum, basal plates and central 
area of abdomen above, black; antenne lighter beneath, especially 
toward apex; veins brown, stigma and costa yellowish. 
Two females from Texas, one Norton’s type (Colls. U. S. Nat. Mus. 
and Am. Ent. Soc.) 
In general characteristics this species comes very near Nematus per- 
gandei n. sp., but it is less than one-half the size of the latter, and 
differs in other details. 
