28 PROCEEDINGS OF THE NATIONAL MUSEUM, vol. 64, 



the (disk; scutellum sparsely punctate, carinae complete to apex, the 

 space between more than twice as broad at base as at apex and 

 three-fourths as broad as long; mesopleurum and metapleurum 

 finely and rather densely punctate; propodeum strongly arched 

 from base to apex, finely transversely striate, apically irregularly 

 roughened, apophyses weak, spiracles elongate oval; second inter- 

 cubitus broken; recurrent interstitial with second intercubitus or 

 slightly antefurcal or postf ureal, nearly evenly curved; posterior 

 bulla well below middle; nervulus postfurcal by more than half its 

 length, perpendicular; postnervulus broken at its upper third: abscis- 

 sula about three times as long as intercubitella ; nervellus broken 

 at a right angle at about its upper third; hind femur stout, distinctly 

 less than two-thirds as long as tibia and hardly or barely as long 

 as combined length of coxa and trochanter; tibia four-fifths as long 

 as tarsus; tarsi slender, apical joint of middle tarsus about as 

 long as third and a half longer than fourth, claws small with about 

 ten large teeth and a few small basal ones. Abdomen weakly com- 

 pressed, first tergite about a third longer than second and three and 

 a half times as long as wide at apex, spiracles just beyond basal third; 

 second one and a half times as long as wide at apex. 



Dull brownish testaceous; face, clypeus, orbits, and vertex yellow; 

 antennae ferruginous, slightly infuscate apically; wings hyaline, veins 

 dark, stigma and costa pale; tibiae at base and tarsi yellow. 



Male. — Length 14 mm.; antennae 12 mm. 



Differs from the female essentially in the relatively shorter ocell- 

 ocular and postocellar lines due to the slightly larger oceUi; less 

 strongly arched propodeum; and narrower abdomen; tarsal claws 

 scarcely more densely pectinate than in female. 



Type-locolity. — Wellington, Kansas. 



Type.— Cat. No. 25985, U.S.N.M. 



Described from thirty-nine females and twenty-two males; eighteen 

 females and ten males taken at light at the type-locality by E. G. 

 Kelly; one female from Baldwin, Kansas; one female from Stillwater, 

 Oklahoma (A. N. Caudell) ; eight females and three males from Texas; 

 one female and two males from Colorado (C. F, Baker); one female 

 froiii the Flathead Indian Keservation, Montana (Hopkins U. S. No. 

 8595, Josef Brunner) ; one male from Brookings South Dakota; one 

 female from Sullivan, Indiana (J. W. Spencer); one female from 

 Wetumpka, Alabama (H. H. Smith) ; one female from North Carolina 

 (T. Pergande) ; one female from Virginia ; one female and one male 

 from the District of Columbia; two males from Pennsylvania (C. F. 

 Baker) ; one female from New York ; one female and two males from 

 New Haven, Connecticut (W. E. Britton) ; one female probably from 

 Massachusetts, collected by George Dimmock and bearing his No. 

 1138 m; and one female and one male unlabeled. 



