83 
crest; antenne short, not longer than head and thorax, slender, taper- 
ing, joints 4 and 5 subequal, longer than 3; intercostal cross nerve 
very oblique, nearly interstitial with basal nerve; second cubital cross 
vein about half as long as the third; venation otherwise normal; stigma 
very slender, elongate, and acuminate; sheath narrow, elongate, 
rounded at apex; cerci very slender, longer than last dorsal segment; 
claws deeply cleft, rays subequal. Color in general luteous; large 
spot on head including ocelli, antennal region except spot above 
clypeus, antenn, center of anterior lobes of mesonotum, apex of scutel- 
lum, metanotum, narrow margin of basal plates, prothorax beneath, 
spot on outer angles of same, bases of cox and trochanters, ventral 
half of mesepimera, extreme tip of sheath, and the cerci piceus; upper 
and lower edges of femora and upper edges of tibiz and tarsi, particu- 
larly the posterior pair, fuscous; veins, including stigma, costa, and 
tegulie, yellowish brown; a minute dot occurs at the apex of the median 
cell and near the center of the second cubital cell; anterior wings, par- 
ticularly, slightly infuscated. 
Three females. Colorado. (Coll. Am. Ent. Soc.) 
A female collected on willow blossoms at Olympia, Wash. (Coll. Cor- 
nell Univ.), differs from the above in being in general lighter colored, 
the dark markings being generally present but somewhat more restricted. 
The wing veins and particularly the stigma are lighter, and the mes- 
epimera lack the pectoral dark spot. 
16. Amauronematus lineatus Harrington. 
1893. Nematus lineatus Harrington. Can. Ent., xxv, p. 59. 
Female.—Length 7.5 mm.; robust, abdomen tapering from near base 
quite strongly toward apex; clypeus distinctly emarginate, lobes tri- 
angular; lateral walls of ocellar basin indistinct; frontal crest large, 
sharply defined, slightly or not at all broken; fovea triangular; antenne 
not so long as head and thorax, tapering, joints 3 to 5 subequal; vena- 
tion normal; stigma elongate, widest at base, tapering regularly to 
apex; sheath long, narrow, regularly and equally rounded on both 
margins to obtuse apex; cerci rather long, slender, scarcely tapering; 
claws large, deeply cleft, rays subequal. Color yellowish ferruginous; 
vertex and mesonotum inclined to reddish or with a purplish tinge; 
antenne except on scape beneath, narrow line sometimes wanting on 
anterior lobe of mesonotum, apex of mesoscutellum, metanotum for most 
part, and the dorsal abdominal segments centrally, narrowing poste- 
riorly, black; extreme upper and outer margin of sheath brown; 
extreme tips of posterior tibiz and their tarsi very slightly infuscated ; 
veins light yellowish brown; stigma and costa somewhat lighter yel- 
lowish. 
Redescribed from the type of this species loaned by Mr. Harring- 
ton, and two specimens—one collected in Maine (Coll. Am. Ent. Soc.) 
