84 BULLETIN 143, UNITED STATES NATIONAL MUSEUM 



the lateral and apical margins, second tergite with dense, elongate, 

 confluent punctures; tergites 3-6 with dense, moderate punctures; 

 pygidial area finely rugose; first sternite without a median longitudi- 

 nal keel, coarsely, densely punctured; second sternite distinctly con- 

 cave, the sides and apical margin scabrose; sternites 3-6 densely 

 punctate at their apical margins ; postero-lateral angles of last sternite 

 angulate, dentiform. 



Legs dark ferruginous, sparsely clothed with intermixed pale and 

 black pubescence; posterior trochanters produced at the apex within 

 into a prominent tooth ; calcaria dark. 



Wings fuliginous; cell 2nd Ri + Ro broadly truncate at the apex; 

 cell R4 almost obsolete ; vein M3+4 received by cell R., about one-third 

 the distance from the base to the apex ; veins r-m and Rg widely sep- 

 arated on vein r. 



Eolotype. — Female, San Bernardino Ranch, Douglas, Arizona, 

 August (F. H. Snow), in collection of University of Kansas. 



Allotype. — Male, San Bernardino Ranch, Douglas, Arizona, 

 August (F. H. Snow), in collection of University of Kansas. 



Paratype. — Female, San Bernardino Ranch, Douglas, Arizona, 

 August (F. H. Snow), in collection of University of Minnesota. 



This species is closely related to eminentia and scdbra. The 

 female differs from both in having the apical fringe of the second 

 abdominal tergite black, and in having the third tergite clothed 

 entirely with black pubescence; the pubescence of the head, thorax, 

 and abdomen above is whitish in eminentia and scabra while in 

 furina the same areas are, with the exception noted above, clothed 

 with yellow pubescence. The male is very much like eminentia but 

 the body is ferruginous, the head and thorax darker than the abdo- 

 men. The genitalia are like those of eimnentia. 



Group FOX I 



The females of this group have the thorax broader than long, 

 antennal scrobes carinate above, scutellar scale absent, and pygidium 

 longitudinally rugose. The males have the ventral surface of the 

 posterior tibiae greatly flattened, and the posterior tibiae arcuate. 



18. DASYMUTILLA FOXI (Cockerell) 



Sphaerophthalma foxi Cockekell, Ent. News, vol. 5, p. 199, 1894, male. 

 Sphacrophthalma heterochroa Cockekell and CavSad, Ent. News, vol. 5, p. 



298, 1894, female. 

 Multilla foxii Dalle Tokke, Cat. Hymen., vol. 8, p. 41, 1897 male. — Fox, 



Ti-ans. Amer. Ent. Soc., vol. 25, p. 289, 1899, male.— Melander, Trans. 



Amer. Ent. Soc, vol. 29, p. 302, 1903, female, male. 

 Mutilla lieterocliroa Dalle Torre, Cat. Hymen., vol. 8, p. 4G, 1897, female. — 



Fox, Trans. Amer. Ent. Soc, vol. 25, p. 246, 1899, female. 



