280 BULLETIN 143, UNITED STATES NATIONAL MUSEUM 



margins and the postero-lateral angles of the head not greater than 

 one-third tlie diameter of the eyes ; front and vertex with large, shal- 

 low, more or less confluent punctures, clothed with long, white, 

 erect, and recumbent pubescence; genae with separated, moderate, 

 shallow punctures, clothed with sparse, black pubescence; relative 

 widths of head and thorax, 9.5-13. 



Thorax very dark, mahogany red, as broad as long ; dorsum of 

 thorax with very large, deep and coarse punctures, clothed with 

 long, erect and recumbent white pubescence; scutellar scale prom- 

 inent; propleura with shallow, indistinct punctures; very sparsely 

 clothed with dark pubescence ; anterior half of mesopleura glabrous, 

 indistinctly punctured, clothed with sparse, dark pubescence; pos- 

 terior half of mesopleura coarsely punctured, with a longitudinal 

 row of long, black hairs; metapleura glabrous, with a few scattered 

 punctures ventrally, sparsely clothed with dark hairs; sides of 

 propodeum with shallow, indistinct punctures, sparsely clothed with 

 dark pubescence; posterior face of propodeum coarsely and deeply 

 reticulate; dorsum and dorsal half of posterior face of propodeum 

 with long, erect white pubescence ; the ventral half of the posterior 

 face with long, erect black pubescence. 



Abdomen very dark mahogany red; first tergite glabrous, a few 

 large, shallow punctures at the sides, small confluent punctures on 

 the apical margin, with a transverse, subapical row of long, erect 

 black hairs ; second tergite with close, coarse, deep punctures, clothed 

 with long, erect, white pubescence, except the basal lateral angles 

 with sparse, dark pubescence, and a thick, apical fringe of black 

 pubescence ; tergites 3-5 with small, very indistinct punctures, clothed 

 with erect, black pubescence; pygidium distinctly longitudinally 

 rugose ; first sternite with a distinct median carina ; second sternite 

 with large, more or less confluent punctures, sparsely clothed with 

 black pubescence, and a thick apical fringe of black pubescence; 

 sternites 3-5 indistinctly punctate, each with a thick fringe of long, 

 black pubescence. 



Legs very dark mahogany red, clothed with long, black pubescence. 



Holotype. — Female, Andrade, California, Colorado Sand Desert. 

 August 10, 1917 (J. Bequaert). in collection of University of 

 Minnesota. 



Paratype. — Female, Brawley, Imperial County, California, August 

 9, 1914 (J. C. Bradley), in collection of Cornell University. 



This species is quite remarkable in appearance with its contrasting 

 coat of white and black pubescence. It is also remarkable from the 

 fact that the type was collected at light at about 11 o'clock at night. 

 There is no record of any other female Dasymutilla being collected 

 at lights. The eyes of this and the preceding species are much 



