THE TRIBE CHALCIDINI — BURKS 305 



cavity just ventrad of antennal bases; frontal tentorial pits located 

 very near antennal bases, at level of ventral margin of scrobe cavity ; 

 width of malar space approximately one-third height of compound 

 eye; frontogenal suture straight; combined widths of compound 

 eyes four-fifths interocular width at level of antennal bases; left 

 mandible with two teeth, right with three; diameter of posterior 

 ocellus usually two-thirds interocellar width, sometimes slightly less ; 

 vertex strongly depressed between posterior ocelli. 



Dorsum of thorax scatteringly covered by punctures and short, 

 slightly irregular transverse carinae; pubescence indistinct; antero- 

 lateral angles of pronotum carinate, anterior dorsal margin with 

 carina varying from strong to weak, this carina interrupted on 

 mesal one-eighth to one-third; parapsidal furrows distinct; prepec- 

 tus usually concealed, occasionally visible as a very narrow, blade- 

 like sclerite extending to tegula; apex of mesoscutellum with a 

 minute lamina which is strongly depressed on meson ; metepisternum 

 partly glabrous, anteroventral angle sometimes minutely shagreened, 

 a few shallow punctures present; metacoxae completely glabrous, 

 sparsely covered by rather long pubescence except on outer dorsal 

 surface; metafemur (fig. 12, j) glabrous on outer surface, densely 

 covered by short pubescence, ventral margin with. 14 to 22 small, 

 closely set teeth, the basal one larger ; inner tooth wanting ; metatibia 

 with apex narrow, acute. 



Propodeum with two lateral areas at base covered by minute, 

 irregular reticulations, well-developed carinae on meson and at apex, 

 a blunt lateral projection present on either side of point of inser- 

 tion of petiole, spiracular openings vertical; petiole usually as wide 

 as long, occasionally slightly longer, basal lamina narrow, distinct 

 lateral carinae present, area of petiole ventrad of lateral carinae 

 lightly shagreened; gaster one-third to one-half longer than meta- 

 femur, abdominal tergites three to seven each with a sparse row of 

 lateral setae; eighth tergite minutely shagreened, sparsely covered 

 by long setae, spiracular openings oval; cerci oval, small, located 

 near posterior margin of epipygium, usually provided with five long 

 setae; apex of ovipositor sheath densely covered with short setae. 



Male: 4-7 mm. Mesal margin of anteimal scape strongly incised 

 (fig. 8, t) , pedicel triangular (fig. 9, u) ; width of malar space one- 

 quarter height of compound eye ; combined widths of compound eyei> 

 equal to width of interocular space at level of antennal bases ; petiole 

 slightly longer than wide at widest point ; cerci large, located midway 

 between base and apex of ninth tergite. 



Type locality. — Missouri. 



Types. — Holotype, female, 2788, U. S. National Museum; the allo- 

 type has apparently been lost, although both the male and female 

 were mentioned in the original description. Synonyms : trinidadeur 



