ABT. 28 CHALCID FLIES NORTH OF MEXICO BALDUF 31 



golden reddish brown, except a black mesal area usually about as 

 broad as length of this segment, or less often not black in front but 

 with a pair of black projections reaching close to front edge of 

 segment, or black area in form of a triangle, its apex cephalad: 

 prescutum entirely black, and scutel mostly so, its sides not so. 

 scapulae and axillae sometimes entirely black above, but sides 

 always more or less reddish brown, mesopleura the latter color, 

 tegulae yellowish brown, propodeum mostly black, sometimes in 

 part reddish on sides and above; legs mostly light yellowish brown, 

 coxae usually so but at times more or less black on posterior faces, 

 front femora sometimes unicolorous or with a superior black stripe, 

 middle and hind femora generally darker, the former at times almost 

 entirely'' yellowish brown and again more or less dark brown, the 

 latter on the average with more dark brown, its outer face varying 

 from yellowish brown to rarely entirely black; tibiae mostly dark 

 brown or black, front tibiae with outer face only, but middle tibiae 

 more so, and hind tibiae entirely so except base and apex; tarsi 

 usually light yellowish brown, but hind tarsus rarely lightly 

 infuscate behind ; submarginal band dark brown, form variable from 

 about twice as long as wide to only one-fourth longer than wide, 

 more often the former and then proximal edge moderately concave 

 and distal edge sometimes about parallel with it or sometimes some- 

 what dilated below stigmal vein and more sharply rounded, length 

 of band about two-thirds the width of the wing at that point; 

 abdomen brownish black, anterior ventral part of sides, and venter, 

 yellowish to reddish brown. 



Head dimensions from above slightly variable but on the average 

 three-sevenths wider than long, on some specimens twice as wide as 

 long, front feebly convex, temples moderately prominent, occiput 

 slightly concave ; face coarsely reticulate-punctate, circumocular and 

 malar spaces minutely wrinkled; antennae slender compared with 

 large size of body, but somewhat variable in relative length and diam- 

 eter of its parts, scape (not including radicle) five times longer than 

 its greatest diameter and as long as pedicel, Fl, and F2 combined, 

 pedicel longer than Fl (not including ring joint), Fl one-sixth 

 longer than each of F2 to F5, these uniform in length, width, and 

 form, each about two-fifths longer than thick, club compact, feebly 

 thicker than funiculars, and almost as long as F4 and F5 combined, 

 flagellum moderately hairy; pronota and mesonota umbilicately 

 punctate and moderately hairy, mesopleura as usual aciculate, 

 propodeal groove crossed in front by rounded carina extending 

 caudo-laterad, anterior part of groove smooth, rest of the segment 

 irregularly reticulate; submarginal vein bearing a row of 13 to 18, 

 more often 15 to 17, setae; abdomen v.^ien normally extended rather 



