ceropalinae: tribe ceropalini 237 



2 to 5 with very short clothing hairs, and a few obKque hairs a Uttle 

 longer than the rest; subgenital plate broadly lanceolate and with a 

 pointed apex, but sharply folded along the midline so as to appear 

 narrow from below and lanceolate from the side; squama usually 

 linear spatulate but sometimes short spatulate, with its apical part 

 a little broadened, covered with long oblique hairs, and its end rounded. 



Black. Front tibia and tarsus more or less brownish; tibial spurs 

 stramineous, infuscate basally; wings subhyaline, the fore wing with 

 a weak infuscation along its apical margin. 



Female: Forewing 6.7 mm. long; punctm'es on frons and thorax 

 a little coarser than in other Nearctic species of the genus; sensillae 

 beginning near the middle of the second flagellar segment ; subgenital 

 plate with the long suberect hairs rather scattered, but somewhat 

 concentrated medially. These longer hairs arise from more definite 

 punctures than in other Nearctic species of the genus. The median 

 hairs are mostly rather stout but tapered to a slender tip. 



Black. Apical part of mandible reddish brown; tibial spurs brown; 

 wings somewhat infuscate, paler basally. 



Specimens: cf , Atlanta, Ga., July 27, 1942, P. W. Fattig (Cam- 

 bridge). &, Tallulah, La., Aug. 1940, J. E. Gillaspy (Townes). 

 <^ (t3T)e), Ross County, Ohio, July 9, 1942, D. J. Borror (Columbus), 

 cf, lOmiles west of Fort Davis, Tex., July 23, 1947, E. D. Valentine 

 (Evans), cf, 9, Laredo, Tex., Sept. 24, 1947, J. E. Gillaspy 

 (Evans and Townes). cf , San Domingo, Baja California, Mexico, 

 July 19, 1948, Michelbacher and Ross (San Francisco). 4cf, 19, 

 15 km. east of Sombrerete, Zacatecas, Mexico, July 28 to 31, 1951, 

 H. E. Evans (Evans, Berkley, and Townes). 



This species may prove to be transcontinental in the Lower Austral 

 Zone. 



Tribe Ceropalini 



Labrum large, conspicuously exposed; eyes divergent dorsally, 

 their inner margins concave above; flagellum rather inflexible and 

 thickened; thorax rather short, the propodeum short and rather flat 

 in profile; stigma about 4.0 as long as wide; nervellus ending dis- 

 tinctly basad of the junctm-e of cubitella with discoidella (pi. 1, fig. 14) ; 

 middle and hind femora often with a few spinelike bristles set in pits ; 

 spinelike bristles on outer apical margin of hind tibia moderately 

 weak, somewhat u-regular in length, forming an irregular or inter- 

 rupted row; last segment of tarsi often with preapical spinelike 

 bristles that are arranged in two u-regular, ventral, sublateral rows; 

 female subgenital plate strongly compressed, in side view somewhat 

 produced apically, with a brief median ventral longitudinal ridge at 

 the apex; sting straight, strong. 



Tliree genera are known: the Oriental Xanthamimlex, the Neo- 



347756 — 57 16 



