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KEVISION OF THE GEKUS EXETASTES — CUSHMAN 287 



junction of occipital and hypostomal carinae distinctly less than basal 

 width of mandible from the latter, hypostomal of normal height; eyes 

 large, strongly convex, much longer than width of face, very shghtly 

 convergent below; postocellar line hardly as long as ocellocular line 

 and less than a half longer than diameter of an ocellus; antenna 

 slender, attenuate at apex, 57-jointed, basal joint of flagellum fully 

 twice as long as second, the latter more than twice as long as thick. 



Thorax subpolished, sparsely punctate laterally, very weakly so 

 dorsally; notauli absent; mesoscutum unusually flat; scutellum un- 

 usually narrow and rather weakly convex in profile; propodeum 

 weakly convex both transversely and longitudinally, with median 

 trace of apical carina, finely and not densely punctate, wdth a few 

 short longitudinal rugae posteriorly; position of pleural carina indi- 

 cated by difference in sculpture; spiracle elongate, situated nearly its 

 length from pleural carina. 



Legs slender; inner hind calcarium nearly two-thirds as long as 

 basitarsus; apical joint of tarsus shorter than third joint. 



Wings: Stigma and radial cell narrow; apical abscissa of radius 

 moderately curved at base, more than a half longer than basal abscissa; 

 areolet oblique; second discoidal cell rather narrow, second recurrent 

 less than two-thirds as long as basal abscissa of subdiscoideus, sub- 

 angulate above; nervulus shortly postfurcal; abscissula hardly twnce 

 intereubitella. 



Abdomen very slender, polished, apically compressed; first tergite 

 about three times as long as broad at apex ; second nearly twice as long 

 as broad at base; ovipositor short, sheath distinctly less than half as 

 long as first tergite. 



Head and thorax black; spot on each side of face, apical portion of 

 clypeus, spot on lower cheek, mandibles, anterior margm of pronotum 

 medially and humeral angles, anterior lateral margins of mesoscutum, 

 scutellum and postscutellum, and a spot below hind wing yellow; 

 antenna black, scape brownish to yellowish in front, flagellum more 

 or less reddish apically and with a broad incomplete yellow annulus ; 

 labial palpus wliite with apical joint piceous; maxillary palpus broAvn- 

 ish stramineous; metapleurum largely and propodeum apically ferru- 

 ginous, the latter more or less yellowish medially; legs ferruginous, 

 front and middle coxae more or less piceous at base, front coxa other- 

 wise and middle coxa at apex and their trochanters below whitish, 

 trochanters above piceous, basal joint of liind trochanter piceous, 

 apical joint mostly whitish, hind femur narrowly and tibia broadly 

 black apically, tarsus basally blackish and apically reddish with 

 joints 2-4 and apex of 1 whitish; wings hyaline, venation black, stigma 

 reddish strammeous; abdomen ferruginous, segments beyond fifth 

 and sometimes apex of fifth black, sheath piceous. 



ilfaZe.— Structurally much like female, but with eyes parallel, 

 malar space less than half as long as basal width of mandible, and the 



