INVESTIGATIONS ON THE MUTILLID WASPS 257 



anterior half, shallowly and broadly reticulate on the posterior half ; 

 dorsum and posterior face of propodeum deeply, broadly reticulate; 

 basal third of tegulae punctured and hirsute, the remainder smooth 

 and shining. 



Abdomen red, except the basal and apical segments black; first 

 segment black (in several of the paratypes slightly reddish and clothed 

 with pale hairs), subnodose, the ventral carina not produced pos- 

 teriorly, the tergite closely, confluently punctate, especially so on the 

 apical third, clothed with long, black hairs and a thin apical fringe 

 of red hairs; second tergite red, closely punctured at the base and 

 sides, the punctures separated on the disk, sparsely clothed with long, 

 red hairs, and with a thick apical fringe of red hairs ; tergite 3 red, 

 4^6 blackish, ail with close, deep punctures and long, red hairs; apical 

 segment black, smooth, shining, with a broad fringe of black hairs at 

 the base; second sternite red, with large, separated, elongate punc- 

 tures, the median area occupied by a large pit densely filled with pale 

 hairs, the apical margin with a thick fringe of red hairs: third 

 sternite reddish, fourth sternite blackish, both punctured at the apical 

 margin and with an apical fringe of red hairs; sternites five and six 

 black with a thin apical fringe of black pubescence; last sternite 

 black, with scattered punctures and erect, black hairs. 



Legs black, clothed with white hairs; calcaria dark. 



Wings dark fuliginous; veins r-m and Rg approximate on vein r. 



Holotype. — Male, Post Creek Canyon, Pinaleno Mountains, Fort 

 Grant, Arizona, July 15-18, 1917 (J. Bequaert) ; in collection of 

 University of Minnesota. 



Paratypes. — ^Male, San Bernardino Ranch, Douglas, Arizona, Aug- 

 ust (F. H. Snow) ; male, Post Creek Canyon, Pinaleno Mountains, 

 Fort Grant, Arizona, July 15-18, 1917 (J. Bequaert) ; 3 males, 

 Pinaleno Mountains, Fort Grant, Arizona, July 15-19, 1917; male, 

 Sabino Basin, St. Catalina Mountains, Arizona, July 8-20, 1916; 

 male, Tucson, Arizona, July 9, 1920 ; male, Tucson, Arizona, August 

 20, 1920; male, Santa Rita Mountains, Arizona, September 3, 1919; 

 3 males, Baboquivaria Mountains (F. H. Snow) ; male, Steins, New 

 Mexico, July 14, 1917. Paratypes in collections of Cornell Uni- 

 versity, United States National Museum, American Museum of 

 Natural History, University of Minnesota, University of Kansas, 

 University of Arizona, J. Bequaert, and the author. 



This species is superficially like sumichrasti male described by Saus- 

 sure. I have not seen an authentic male specimen of that species. 

 It is not likely that this is sumichrasti, however, as no females of that 

 species are known from the United States. Intermixta may be easily 

 recognized by the mixture of white and black hairs on the head and 

 thorax, the white hairs on the legs, the red abdomen with the basal 

 and apical segments black, and the pit on the second sternite. 



