AST. 28 CHALCID FLEES NORTH OF MEXICO BALDUF 57 



feebly brown above; pronotum light yellowish brown, with a sub- 

 quadrangular black area on median third, sometimes neck feebly 

 black at the middle ; prescutum, scutel, and propodeum black except 

 sides, which are narrowly or feebly reddish brown; mesopleura yel- 

 lowish or reddish brown, scapulae and axillae same, with only their 

 upper surfaces narrowly black; legs mostly yellowish, the outer sur- 

 faces of femora and tibiae of the middle legs lightly inf uscated, those 

 of hind legs darker; submarginal band dark brown, on the average 

 twice as long as wide, measuring from inner edge of stigma, proximal 

 margin rather sliarply emarginate before the middle, distal margin 

 produced, proximal and distal margins subparallel, apical portion of 

 band curving distinctly toward base of wing, apex subtruncate; no 

 secondary band ; abdomen deep brown black, except venter narrowly 

 and lower anterior fourth of sides, which are yellowish brown fading 

 into the dark brown above. 



Head slightly variable in form, from twice as wide as long in most 

 specimens to almost three-fifths as long as broad, front feebly to 

 moderately convex from above, occiput slightly concave ; head feebly 

 reticulate, narrow space along upper part of malar groove smooth, 

 the rest of the groove, the genae, and the vertex sculptured like face, 

 except a small space laterad of each posterior ocellus, which is finely 

 punctate, the usual small umbilicate punctures wanting; antennae 

 moderately stout, scape slightly more than four times as long as 

 thick (not including radicle), and as long as pedicel, Fl, and half of 

 F2 combined, pedicel and Fl equal in length, F2 to F5 uniform in 

 length and each four-fifths as thick as long, diameter of club and 

 funicle alike, club compact and as long as F5, F4, and half of F3 

 combined ; pronotum five-sixths the width of the head and the meso- 

 notum, mesopleura aciculate and finely punctate; anterior of pro- 

 podeal groove crossed by V-shaped carina, the apex of the angle 

 rounded, groove also crossed at irregular intervals by a series of 

 parallel rugae, sides of propodeum coarsely reticulate; submarginal 

 vein with a row of 11 to 14 setae; all of abdomen smooth, polished; 

 few hairs on segrnent 4, region of ovipositor sheath moderately 

 hairy. 



Male. — Length 2.2 mm., blacker than female; entire occiput, hind 

 margins of genae, face almost down to antennal fossae, vertex en- 

 tirely black ; antennae slightly darker than on female ; all of prono- 

 tum above, except lateral edges, mesothorax, metathorax, and propo- 

 deum, black, mesopleura reddish brown to partly black, front femora 

 infuscate outwardly, femora and tibiae of middle and hind legs 

 brown except bases and apices, hind coxae with faint longitudinal 

 black stripes; submarginal band dark, almost twice as long as wide; 

 head two-thirds as long as broad, face rounded, vertex mostly only 

 finely punctate ; antennae more slender than in female, pedicel and 



