INVESTIGATIONS ON THE MUTILLID WASPS 259 



the latter sparse on the disk, close and coarser at the sides and apex ; 

 sternites 3-5 densely punctate. 



Legs dark mahogany red, clothed with long, coarse, black pubes- 

 cence; middle and hind femora squarely truncate at the apex, the 

 face of the outer lobe of the truncation sulcate; calcaria black. 



Holotype.—FQm^iiQ, Nogales, Arizona, July 19, 1903 (Oslar) ; in 

 collection of Cornell University, No. 761.1. 



PARATTPB MATERIAL 



Arizona: Female, Nogales, June 22, 1903 (Oslar); female, Nogales, July 1, 

 1903 (Oslar) ; female, Nogales, July 17, 1903 (Oslar) ; female, Nogales, 

 July 20, 1903 (Oslar) ; 7 females, Douglas, San Bernardino ranch, August 

 (F. H. Snow) ; 7 females, San Bernardino ranch, Cochise County, August 

 (F. H. Snow) ; 4 females, Carr Canyon, Huachuca Mountains, August, 1905 

 (H. Skinner) ; female, Huachuca Mountains, August 15, 1903 (Oslar) ; 

 female, Tucson, June 25, 1924 (A. A. Nichol) ; female, Tucson, July 27, 

 1917; female. Kits Peak, Baboquivaria Mountains, August 1-4, 1916; 7 

 females, Baboquivaria Mountains (F. H. Snow) ; 2 females, Sabino Basin, 

 St. Catalina Mountians, July 8-20, 1916; female. Fort Grant, Pinaleno 

 Mountains, July 17, 1917 ; 4 females. Fort Grant, Pinaleno Mountains, July 

 18, 1917; female. Fort Grant, Pinaleno Mountains, July 19, 1917; female, 

 Bonita, Graham County, July 12,1917; female, Bonita, July 18, 1917 (H. H. 

 Knight) ; female, Palmerlee, July 21 (H. A. Kaeber) ; female. Soldier 

 Canyon, August 17, 1919. Paratypes in collections of Cornell University, 

 University of Minnesota, United States National Museum, American Museum 

 of Natural History, American Entomological Society of Philadelphia, 

 University of Kansas, H. H. Knight, and the author. 



Superficially this species resembles klugii, magnifica, and gorgon, 

 but differs very materially in the general sculpture of the body and 

 in the character of the middle and hind femora. It is most closely 

 related to the following species. The structure of the middle and 

 hind femora is similar to that found in the ohscura group. This 

 species had been recognized as new by Dr. J. C. Bradley and I have 

 used his manuscript name, Twgalensis. 



110. DASYRIUTILLA HELVA. new species 



Female. — ^Very dark red, almost black; clothed with very pale 

 yellow, almost white, long, erect pubescence ; middle and hind femora 

 squarely truncate at the apex, the face of the outer lobe of the trunca- 

 tion sulcate. Length, 12 mm. 



Head broad, transverse, clothed throughout with sparse, pale 

 yellowish-white hairs ; mandibles acute at the apex and with a small 

 tooth within; scape clothed with pale hairs; first joint of flagellum 

 slightly more than twice as long as its width at the apex; antennal 

 scrobes distinctly carinate above; front and vertex very coarsely, 

 confluently punctured; genae with moderate, separated, shallow 

 punctures, not nearly as coarsely sculptured as the front and vertex, 

 rounded posteriorly; relative widths of head and thorax, 8-9. 



