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nate, lobes broad, rounded; frontal crest and sides of ocellar basin not 
very strongly elevated, distinct; antennal fovea very shallow, broad ; 
antenna 1 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 
at apex. Color black, shining; triangular spot below antenna 1 , labrum, 
upper and posterior orbits, palpi, outer angles of pronotum, tegnla 1 , 
apex of abdomen, hypopygium and more or less of venter laterally, 
apices of cox*, trochanters, femora except bases, tibia 1 except apices, 
light fulvous; tips of tibia 1 , the tarsi, veins, and stigma infuscated; 
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. F. S. Nat, Mus.) 
25. Pachynematus apicalis new species. 
Male. — Length 7 mm.; very slender, elongate, shining; head not nar- 
rowed back of compound eyes; clypeus very shallowly emarginate; 
walls about ocellar basin distinctly raised, rounded; antennal fovea 
circular; antennae 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 clypeus, labrum, upper 
and posterior orbits, angles of pronotum, tegulae, apical half of femora, 
tibia 1 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. Soc.) 
2G. 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 antennae, indistinctly 
defined; antennae 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; tegulae, outer two-thirds of femora, tibiae and tarsi, abdomen 
