107 
hate, lobes broad, rounded; frontal crest and sides of ocellar basin not 
very strongly elevated, distinct; antennal fovea very shallow, broad; 
antennie longer than head and thorax, rather robust and tapering, not 
compressed, joints 4 and 5 subequal, longer than 3; procidentia longer 
than broad, squarely truncate at apex; hypopygium strongly produced, 
rather narrow, and very slightly emarginate at apex; second recurrent 
interstitial or received at base of third cubital cell, which is scarcely 
or not twice as long as wide at base; outer veins of discal cells of hind 
wings interstitial, or nearly so; stigma broad at base, tapering roundly 
atapex. Color black, shining; triangular spot below antenne, labrum, 
upper and posterior orbits, palpi, outer angles of pronotum, tegulie, 
apex of abdomen, hypopygium and more or less of venter laterally, 
apices of cox, trochanters, femora except bases, tibiwe except apices, 
light fulvous; tips of tibia, the tarsi, veins, and stigma intusecated ; 
costa yellowish on basal half. 
One male, reared from a larva collected on wheat in Indiana by F. M. 
Webster; adult issued April 22. (Coll. U.S. Nat. Mus.) 
25. Pachynematus apicalis new species. 
Male.—Length 7mm.; very slender, elongate, shining; head not nar- 
rowed back of compound eyes; clypeus very shallowly emarginate; 
walls about ocellar basin distinetly raised, rounded; antennal fovea 
circular; antenne very long, slender, tapering, not compressed, fourth 
joint longest, all joints distinctly nodose at tip; procidentia broad at 
base, very long, tapering suddenly at tip, which is obtusely rounded; 
venation normal, except that the second recurrent is interstitial, or 
nearly so, with the second transverse cubital; outer veins of discal 
cells of hind wings are also nearly interstitial; stigma broad, widest 
near base, tapering regularly to apex; inner tooth of claw very minute, 
remote from apex of claw. Color black; tips of elypeus, labrum, upper 
and posterior orbits, angles of pronotum, tegule, apical half of femora, 
tibiwe and tarsi,and apical segments of abdomen yellowish ferruginous; 
stigma and costa and all veins reaching the body basally light yellow- 
ish, almost hyaline; other veins brown. 
Two males. Montana. (Coll. Am. Ent. Soe.) 
26. Pachynematus infumatus new species. 
Male.—Length 8 mm.; robust, head not nearly as wide as thorax, not 
narrowing back of compound eyes; clypeus very slightly emarginate, 
almost truncate; vertex rugose; walls about ocellar basin indistinct; 
antennal fovea extending laterally over bases of antennie, indistinctly 
defined; antenne much longer than head and thorax, tapering, some- 
what compressed basally; procidentia very broad, tapering, squarely 
truncate at apex, not keeled; venation normal; claws with minute inner 
tooth. Color black; labrum, upper and posterior orbits, outer angles of 
pronotum, tegulie, outer two-thirds of femora, tibie and tarsi, abdomen 
