102 
wings hyaline, or nearly so; veins light brown; stigma and costa pale, 
nearly hyaline. 
One female. Colorado. C. P. Gillette, collector. (Coll. U. S. Nat, 
Mas.) 
14. Pachynematus robustus new species. 
FemMe. — Length 6 mm.; short, very stout; head dilated hack of 
eyes; clypeus rather sliallowly hut distinctly emarginate; frontal crest 
well denned, unbroken; antenna! fovea circular, deep; head very 
coarsely and rugosely punctured; antenna 1 very slender, elongate, 
joints 3 and 4 subequal; intercostal more than twice its length anterior 
to basal vein; second recurrent interstitial or nearly so with second 
cubital, venation otherwise normal; stigma large, widest near base; 
sheath robust, slightly acuminate toward apex; ccrci long, filiform. 
Color black; labrum, angles of pronotum, teguhc, more or less of the 
ventral segments of abdomen, the apex of the last dorsal segment, and 
legs for the most part light yellowish brown; coxee basally strongly 
iufuscated; femora, apices of tibia 1 , and the tarsi dark brown; wings 
hyaline; veins and stigma brown; costa yellowish. 
One female. Montana. (Coll. Am. Knt. Soc.) 
15. Pachynematus clypeatus new species. 
Female. — Length 6.5 mm.; somewhat elongate, shining; head rather 
coarsely punctured, widening noticeably back of compound eyes; 
clypeus not very deeply emarginate, lobes short, rounded; pentagonal 
area distinctly denned, walls not very sharply raised; fovea shallow; 
crest low, unbroken; antenna' rather slender, fourth joint a little longer 
than third: sheath tapering, somewhat obliquely truncate toward tip; 
venation normal, except that the second recurrent is interstitial with 
second cubital; stigma broad, rounded on lower margin; claws with 
minute inner tooth. Color black: small spot beneath bases of antenna', 
tips of clypeus. labium and other month parts, outer half of pronotum, 
tegube, legs, and venter of abdomen yellowish; posterior margins of 
dorsal segments, especially basal ones, pale, together with all of the 
terminal segment; bases of coxa*, extreme tips of posterior tibia', and 
the posterior tarsi brown: bases of femora slightly iufuscated; sheath 
brown; wings nearly hyaline; veins and stigma light brownish; pos- 
terior orbits reddish, strongly iufuscated. 
Two females. Montana. (Coll. U. S. Nat. Mus.) 
10. Pachynematus ater 3Ic(iillivray. 
1893. Mesm atra McGillivray. Can. Eut., xxv, p. 238. 
Female. — Length 6 mm.; robust, shining, somewhat duller on head 
from rather dense punctuation; head dilated back of eyes; clypeus very 
broadly and shallowly notched; ocellar basin distinctly limited, walls 
