246 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 99 



carinae, costulae weak or indistinct, spiracle long ovate. Forewings 

 incomplete, third abscissa of cubitus longer than the fourth ; nervulus 

 postf ureal by about half its own length ; interanal vein represented by 

 a short stump continued as a pigmented line. Fifth segment of fore 

 tarsus longer than second ; apex of hind tibia thickened on outer dorsal 

 margin and expanded into a strongly flaring process; inner spur of 

 middle tibia about 0.60 as long as basitarsus, second tarsal segment 

 shorter than fifth; inner spur of hind tibia about half as long as 

 basitarsus, basitarsus shorter than the last four tarsal segments com- 

 bined, second tarsal segment longer than fifth. First abdominal suture 

 slightly curved to the margin. Second tergite very slightly shorter 

 than third medially; hypopygium a little longer than the first two 

 tergites combined, its median ventral line without a longitudinal fold ; 

 ovipositor sheath smooth, polished, spatulate, its exposed part slightly 

 shorter than the hypopygium (pi. 5, fig. 17). 



Ty^pe.— U.S.N.M. No. 58290. 



Type locality. — Nebraska. 



Described from a single female specimen collected by T. Pergande. 



CARDIOCHILES NIGRICANS, new species 



Male. — Length 5.5 mm. Intensely black, foretibial spur brownish 

 yellow ; f orewing with apical 0.40 fuliginous, the rest hyaline, and hind 

 wing with about apical third fuliginous. Head covered with thick, 

 unusually black hair; antenna 48-segmented ; eye bare; ocelli elevated; 

 vertex smooth and polished ; f rons impressed, and with a weak median 

 longitudinal elevation; face polished, flat, more than three 

 times as wide as long, with a low median tubercle above; clypeus 

 polished, about 2.50 times as wide as long, the median apical margin 

 not notched ; temple and eye subequal in width in dorsal view ; galea 

 short. Median portion of lateral face of pronotum rugose; median 

 lobe of mesoscutum with a shallow depression on each side of median 

 line; notaulices sharp, finely foveolat^; mesopleuron polished, with 

 scattered, minute punctures; upper groove foveolate; lower groove 

 weakly foveolate, posterior groove finely foveolate; metapleuron 

 rugose, a flat, polished area on its anterior portion ; propodeum rugose, 

 carinae, including costulae, prominent, areola smaller than spiracular 

 area, spiracle ovate. First abscissa of radius longer than that of basal 

 vein; third abscissa of cubitus slightly shorter than fourth; second 

 abscissa of cubitus longer than recurrent vein ; nervulus postf ureal by 

 0.67 its own length ; first abscissa of submedius slightly shorter than 

 second ; interanal vein represented by a short pigmented stump. Fore 

 femur fringed with long pubescence ventrally, fifth segment of fore 

 tarsus longer than second ; hind tibia somewhat compressed and broad, 

 ened toward apex, but without an apical thickening, and not expanded 



