101 
4 and 5 subequal, longer than 3; sheath short, tapering, obtusely 
pointed; claws with minute inner tooth; venation normal, except that 
the second recurrent is interstitial with the second cubital; stigma very 
narrow and acuminate. Color black; tips of clypeus, mouth parts, 
extreme angles of pronotum, teguhe, tip of abdomen except sheath, and 
outer half of femora reddish yellow; tibia' pale yellowish; tarsi slightly 
infuscated; sides of mesepimera slightly reddish; wings hyaline,' veins 
dark brown; costa and stigma hyaline. 
Two females. Mount Washington, K H. One labeled as having 
been taken at an elevation of about 0,(K)(> feet, July 0, 1891. (Coll. 
Cornell Univ.) 
12. Pachynematus montivagus new species. 
Female. — Length 8 mm. ; robust; head dilated back of eyes; head and 
thorax opaque from rather fine and dense puncturing, together with very 
short and inconspicuous pubescence; clypeus broadly and shallowly 
emarginate; pentagonal area distinctly defined, lateral walls sharp, 
minute; crest unbroken, not prominent; fovea oval; antenna' short, 
slender, tapering, joints 3 and 4 subequal; sheath short, tapering; claw 
with short inner tooth; venation normal, except that second recurrent 
is interstitial with second cubital; stigma broad, rounded beneath, 
scarcely tapering. Color black; labrum, angles of pronotum, teguhe,, 
extreme tip of abdomen, venter for the most part, and legs yellowish, 
inclined to reddish on femora; coxa' except tips and extreme bases of 
femora infuscated; tips of posterior tibia' and their tarsi brownish; 
abdomen with brownish spots beneath, noticeably at base; wings 
hyaline, or nearly so; veins brown; stigma and eosta light yellowish,, 
almost hyaline. 
One female. Mount Washington, N. H. (Coll. Cornell Univ., 
This species resembles the preceding in size and general characteris- 
tics, but diverges notably in the character of the stigma and pubescence 
of head and thorax. 
13. Pachynematus coloradensis new species. 
Female. — Length G mm.; moderately robust, shining; head dilated 
back of eyes; clypeus broadly, circularly emarginate; pentagonal area 
distinctly denned, but walls rounded; crest low, unbroken; fovea 
shallow, extending over bases of antennae; antenna 4 slender, tapering, 
joint 4 slightly longer than 3; venation normal, except that the second 
recurrent is nearly interstitial with second cubital; stigma rounded, 
scarcely tapering; sheath obliquely tapering on lower margin, pointed; 
claws with minute inner tooth. Color black, shining; posterior orbits, 
mouth parts including tips of clypeus, angles of pronotum, teguhe, 
tip of abdomen except sheath, outer third of femora, and the tibia 1 
and tarsi pallid more or less infuscated, particularly tarsi and orbits; 
