288 BULLETIN 143, UNITED STATES NATIONAL MUSEUM 



long, erect, black pubescence; first segment nodose; first tergite 

 coarsely, confluentlj^ punctate f)Osteriorly, with large, scattered punc- 

 tures anteriorly; second tergite densely punctate, except the disk 

 with the punctures separated, distinct ; tergites 3-6 densely punctate ; 

 basal margin of ultimate tergite punctate and pubescent, the sides 

 and apex of the segment reflexed; apical margin of pygidium with- 

 out a fringe of hairs; pygidium rugose; carina of first sternite 

 prominent, somewhat produced, dentiform posteriorly, the sternite 

 coarsely punctured; second sternite with large, distinct, scattered 

 punctures, the latter somewhat closer laterally, and dense and con- 

 tiguous at the apical margin ; a very large, median pit densely filled 

 with hairs on the second sternite; sternites 3-6 with small, scattered 

 punctures near the apical margin; ultimate sternite punctate and 

 pubescent. 



Legs dark mahogany red, sparsely clothed with long, black pub- 

 escence ; calcaria black. 



Wings dark fuliginous; cell 2nd R^-fKa broadly truncate at the 

 apex, cell R^ almost obsolete; vein M3+1 received by cell R5 at one- 

 fourth the distance between the base and the apex; veins r-m and R5 

 separated on vein r. 



Holotype. — Male, Empire Mountains, Arizona, July 3, 1924 (A. A. 

 Nichol), in collection of University of Minnesota. 



Paratypes. — Male, Empire Mountains, Arizona, July 3, 1924 (A, A. 

 Nichol) ; male, Tucson, Arizona, June 3, 1903 (Oslar) ; male, Tucson, 

 Arizona, June 6, 1903 (Oslar) ; male, Tucson, Arizona, July 11, 

 1920; male, Catalina Mountains, Arizona, June 13, 1903 (Oslar); 

 male, Catalina Mountains, Arizona, June 14, 1903 (Oslar) ; male, 

 Patagonia Mountains, May 15, 1903 (Oslar) ; male, Oracle, Arizona, 

 June 11, 1903 (Oslar) ; male, Congress Junction, Arizona, July (F. H. 

 Snow) ; male, Florence, Arizona (Biederman) ; male, Comobabi 

 Mountains, Arizona, August 9-10, 1916; 2 males, Yuma County, 

 Arizona, September, 1903 ; male, Arizona ; 2 males, specimens without 

 data, 4 males. Steins, New Mexico, July 14, 1917 (H. H. Knight). 

 Paratypes in collections of University of Minnesota, American Mu- 

 seum of Natural History; American Entomological Society, Uni- 

 versity of Kansas, University of Arizona, Cornell University, H. H. 

 Knight, and the author. 



Superficially this species appears much like fulvohirta but is quite 

 different from that species in the form of tlie first segment of the 

 abdomen, the median pit of the second sternite, and other characters. 

 It comes near sacJcemi in the key, but may be distinguished from that 

 species by the shorter and much less shaggy pubescence, the apical 

 half of the second tergite clothed with fulvous pubescence and its 

 smaller size. The paratypes vary in length from 8.5 to 12 mm., and 

 the color of the pubescence varies from yellow to fulvous. 



