INVESTIGATIONS ON THE MUTrLLID WASPS 77 



Head mahogany red ; mandibles acute at the apex, apical two-thirds 

 black, basal third ferruginous; clypeal fringe of long, black hairs; 

 scape punctured, sparsely clothed with coarse, dark hairs; first seg- 

 ment of flagellum slightly less than twice as long as it is broad at 

 the apex ; antennal scrobes strongly carinate above ; front and vertex 

 with very large, coarse deep punctures, almost reticulate, clothed 

 with erect and recumbent, long, brilliant crimson pubescence ; genae 

 coarsely punctured like the front and vertex, their posterior margins 

 defined by a prominent irregular carina, clothed with sparse, black, 

 erect pubescence ; relative widths of head and thorax, 7.5-9, 



Thorax mahogany red, except the dorsum reddish testaceous; 

 dorsum deeply and coarsely reticulate, clothed with long, erect and 

 recumbent, brilliant crimson pubescence; propleura closely punc- 

 tured; very sparsely clothed with long, mixed black and pale red 

 pubescence; anterior half of mesopleura with separated shallow 

 punctures, sparsely clothed with short pale recumbent pubescence, 

 posterior half very coarsely, confluently punctured, clothed with long, 

 erect, black pubescence; dorsal half of metapleura glabrous, im- 

 punctate, the ventral half with large, close, shallow punctures, very 

 sparsely clothed with long, black pubescence ; sides and posterior face 

 of the propodeum deeply and coarsely reticulate, sparsely clothed 

 with long, erect, black pubescence, except the dorsal third of the 

 posterior face clothed with crimson pubescence like that of the 

 dorsum; scutellar scale entirely absent. 



Abdomen beneath, the first tergite, and basal and lateral margins 

 of second tergite mahogany red, remainder of abdomen above red- 

 dish testaceous; first segment very short, subsessile; first tergite 

 closely and deeply punctured throughout, sparsely clothed with long, 

 black, erect pubescence and an apical fringe of black pubescence; 

 second tergite coarsely punctate on the basal and lateral margins, 

 the disk deeply and coarsely reticulate; clothed with long, erect and 

 recumbent, brilliant crimson pubescence ; a small medial spot of black 

 pubescence at the apical margin of the second tergite; tergites 3-5 

 closely, confluently punctate, the punctures small and shallow ; basal 

 margin of last tergite clothed with long, reddish pubescence ; pygidial 

 area irregularly rugose tending to longitudinally rugose; first ster- 

 nite strongly keeled, the keel not toothed, sparsely clothed with long, 

 erect, black pubescence; second sternite with deep, separated punc- 

 tures, those at the sides larger and deeper than those on the disk; 

 sternites 3-5 very closely and confluently punctate; sternites 2-5 

 sparsely clothed with long, erect, black pubescence and each with an 

 apical fringe of black pubescence. 



Legs mahogany red, clothed with long, mixed pale and black pub- 

 escence; calcaria dark. 



