INVESTIGATIONS ON THE MUTILLID WASPS 175 



segment of flagellum scarcely as long as segments two and three 

 united, twice as long as it is broad at the apex ; front very coarsely, 

 deeply, and confluently punctate; vertex with coarse, close, more or 

 less confluent punctures but not as coarsely sculptured as the front ; 

 posterior portion of the head with a pair of very elongate, sub- 

 parallel-sided, glabrous tubercles directed outward toward the eyes, 

 the greatest distance between the tubercles greater than the least dis- 

 tance between the eyes ; genae closely, confluently punctured, but not 

 as coarsely sculptured as the front; relative widths of head and 

 thorax, 8-9. 



Thorax ferruginous; junction of the cephalic face and dorsum of 

 pronotum angulate; pronotum and mesonotum very coarsely, con- 

 fluently punctate, sparcely clothed with appressed, golden pubescence 

 and a few scattered erect hairs ; propleura with large, close punctures ; 

 anterior half of mesopleura very finely punctate, the posterior half 

 with large, coarse, confluent punctures ; extreme ventral part of meta- 

 pleura coarsely, confluently punctate, a few scattered punctures on 

 the ventral half adjoining this area, and the dorsal half glabrous, 

 impunctate; sides of propodeum with large, coarse punctures: ven- 

 tral half of the posterior face of the propodeum with small, close 

 punctures; the dorsal half of the posterior face of the propodeum 

 and the dorsum of the propodeum very coarsely, confluently 

 punctate, with a thin brush of long, golden hairs; scutellar scale 

 prominent. 



Abdomen black; first tergite with large, close punctures, clothed 

 with sparse, long, erect, grayish hairs, and a thin apical fringe of 

 black hairs ; second tergite coarsely and closely punctate throughout, 

 the punctures confluent on the disk, clothed with sparse, appressed, 

 black pubescence and scattered, erect, dark hairs, except the pubes- 

 cence of the pale spots golden ; apical fringe of second tergite black, 

 except lateral extremes silvery; the lateral margins of the second 

 tergite with a margin of silvery pubescence; tergites 3-5 closely, 

 confluently punctate, the third tergite clothed with appressed, black 

 pubescence, scattered, erect, dark hairs, and a black apical fringe 

 (except lateral extremes of fringe silvery) ; tergites 4 and 5 clothed 

 with silvery pubescence; pygidium distinctly, longitudinally striated; 

 first sternite with a median, longitudinal carina, punctures scattered, 

 and with sparse, erect, silvery hairs ; second sternite with large, close, 

 more or less confluent punctures, the latter sparser on the disk, closer 

 laterally ; sternites 3-5 closely, confluently punctate ; apical fringes of 

 sternites 2-4 silvery, that of sternite 5 dark, almost black. 



Legs very dark mahogany red or black, clothed with long, sparse, 

 silvery hairs. 



Holotype.—FQmsiiQ^ Payne County, Okla., June 3, 1925 (W. J. 

 Brown), in collection of University of Minnespta. 



