121 
antenne slender, elongate, joints slightly enlarged at tips; second 
cubital hyaline; outer veins of discal cells of hind wings interstitial; 
procidentia broad, strongly keeled; claws with minute inner tooth 
remote from apex. Color black, shining; clypeus, mouth parts, pro- 
notum, tegulie, legs, central area of abdomen ventrally, pale yellowish ; 
apical half of posterior tibiz and their tarsi brownish black; wings 
hyaline; veins light brown. 
Three males, two without locality labels and one collected in North 
Carolina. (Coll. Am. Ent. Soc.) 
16. Pristiphora luteola Norton. 
1867. Nematus luteolus Norton. Trans. Am. Ent. Soc.,1, p.200. (Cat., ete., p. 62.) 
1878. Nematus luteolus Provancher. Nat. Can., X, p.55. 
1883. Nematus luteolus Provancher. Faun. Ent. Can. Hym., p. 185. 
1893. Nematus luteolus McGillivray. Can, Ent., xxv, p. 258. 
Male.—Length 6 mm.; rather slender, elongate, shining; head and 
thorax strongly punctured; clypeus squarely truncate; ocellar and 
frontal ridges subobsolete; antennal fovea very shallow, broad; an- 
tennie very robust, flattened, tapering, longer than head and thorax, 
joints 3 to 5 subequal; venation normal, except that intercostal vein 
is nearly at right angles to costa and the first transverse cubital is 
subobsolete or hyaline; upper discoidal cell of hind wings sometimes 
extending more than 4 its length beyond the lower cell; procidentia 
very broad, slightly excavated at tip, not projecting; hypopygium dis- 
tinetly notched at tip; claws with rather large, prominent inner tooth. 
Color black; elypens, labrum, bases of mandibles, palpi, legs for the 
most part, pronotum, and tegulie yellowish ferruginous; tips of poste- 
rior tibiz and tarsi fuscous; veins, including costa and stigma, except 
base of latter, brown. 
Two males. Illinois and Massachusetts. (Coll. Am. Hnt. Soe.) 
17. Pristiphora occidentalis new species. 
Male.—Length 5 mm.; not very robust; head roughened; lateral 
walls about anterior ocellus entirely wanting; crest present, rounded ; 
fovea shallow; clypeus truncate; antenne tapering, compressed ba- 
sally; procidentia broad, not projecting beyond seventh segment; claws 
with minute inner tooth near apex; second cubital cross vein present; 
third cubital cell quadrate. Color black, shining; clypeus yellowish; 
pronotum, tegule, and legs reddish yellow; posterior tarsi infuscated ; 
wings slightly smoky; veins and stigma dark brown; costa yellowish; 
genitalia strongly infuscated, nearly black. 
Three males. Oregon and Washington. (Coll. U.S. Nat. Mus.) 
18. Pristiphora coloradensis new species. 
Male.—Length 5 mm.; not very robust; head roughened with minute 
tubereles; ridges about anterior ocellus wanting; crest indistinctly 
