202 BULLETIN 143, UNITED STATES NATIONAL MUSEUM 



of the tergite, yellowish on the ferruginous portion; tergites 3-6 

 with moderate, deep, contiguous punctures throughout, sparsely 

 clothed with long, erect, black pubescence and each with a fringe of 

 black hairs ; ultimate tergite contiguously punctate, and pubescent on 

 the basal fourth, pygidial area bare, longitudinally rugose; first 

 sternite with a distinct median longitudinal carina, coarsely, con- 

 fluently punctate, sparsely clothed with long, erect, black pubescence ; 

 second sternite with large, distinct, elongate punctures throughout, 

 and with an elongate, ovate pit densely packed with hairs very 

 slightly anterior to the median point of the sternite, sparsely clothed 

 witli long, erect, black pubescence and with a thin apical fringe of 

 black hairs; sternites 3-G with small, scattered punctures, and each 

 with an apical fringe of black hairs ; ultimate sternite with moderate 

 distinct punctures. 



Legs black, sparcely clothed with black pubescence. 



Wings dark fuliginous; cell 2nd K^-lKa broadly truncate at the 

 apex; cell R^ almost obsolete; vein Mj^^ received by cell Rg at one- 

 third the distance from the base to the apex; veins r-m and Rj 

 widely separated on vein r. 



Holotype. — Male, Comanche County, Kansas, 1915 (R. H, Beamer), 

 in collection of University of Kansas. 



Paratypes. — Male, Seward County, Kansas, August 16, 1911 (F. X. 

 Williams); male, Lee County, Texas, September 11, 1905; 2 males, 

 Lee County, Texas, September 18, 1905; male, Lee County, Texas, 

 September 22, 1905; male, Cuero, Texas (Townsend) ; in collections 

 of University of Minnesota, University of Kansas, and the author. 



This species is rather difficult to distinguish from permista on 

 external characters, although the characters of the genitalia are 

 readily recognized. The occiput has moderate lateral depressions 

 which are practically obsolete in permista; the anterior margin of the 

 pronotum is slightly emarginate medially, and the dorsum medially 

 therefore does not round evenly into the cephalic surface of the 

 pronotum as it does in permista; the pit on the second sternite occu- 

 pies a more basal position than it does in permista. Superficially it 

 is much like gentilis but the latter has the tegulae more punctured, the 

 lateral depressions of the occiput broader and more pronounced, and 

 tlie median emargination is much more distinct, forming a tubercle. 



76. DASYMUTILLA GIBBOSA (Say) 



Plate 3, fig. 18 



Mutilla gibbosa Say, Bost. Journ. Nat. Hist., vol. 1, p. 298, 1836, male. — 

 LeConte, Writ, of Th. Say, vol. 2, p. 741, 1859, male. — Bl.\ke, Trans. 

 Amer. Ent. See, vol. 7, p. 244, 1879, male. — Dalle Torre, Cat Hymen., 

 vol. 8, p. 43, 1897, male. — Fox, Trans. Amer. Ent. Soc. vol. 25, p. 246, 

 1899, male. — ?Melander, Trans. Amer. Ent. Soc, vol. 29, p. 302, 1903, 

 male. 



