100 BULLETIN 143, UNITED STATES NATIONAL MUSEUM 



glabrous, the lateral and apical margins scabrose, due to the very 

 large, coarse, deep punctures; sparsely clothed with long, erect, 

 black pubescence ; second tergite with large, elongate, more or less 

 confluent punctures at the base and sides, the disk with large, mostly 

 separated punctures; tergites 3-5 with small, more or less confluent 

 punctures; pygidial area longitudinally striate; first sternite with a 

 definite longitudinal keel, its posterior half emarginated; second 

 sternite glabrous, with large, deep, elongated punctures, sparse on 

 the disk, and rather close at the sides; sternites 3-5 with small, very 

 close, confluent punctures; the sternites very sparsely clothed with 

 long, erect, black pubescence, and sternites 2-5 with a thin apical 

 fringe of black pubescence. 



Legs black, clothed with long, black pubescence; calcaria black. 



Eolotype. — Female, Medora, North Dakota, August 3, 1923 (O. A. 

 Stevens), in collection of University of Minnesota. 



Pm^atypes. — 8 females, Medora, North Dakota, August 3, 1923 (O. 

 A. Stevens) ; female. Hot Springs, South Dakota, August 27, 1922 

 (H. C. Severin) ; female, Buffalo, South Dakota, July 31, 1924; fe- 

 male, Sioux City, Iowa, July 21, 1921 (C. N. Ainslie) ; female, Hal- 

 sey, Nebraska, September 1, 1924 (R. W. Dawson) ; female, Halsey, 

 Nebraska, September 4, 1924 (R. AV. Dawson) ; female, Scottsbluff, 

 Nebraska, August 5, 1923 (Leonard Worley) ; female, Mon- 

 roe Canyon, Sioux County, Nebraska, August 16, 1912 (E. J. 

 Taylor) ; female, Monroe Canyon, Sioux City, Nebraska, August 19, 

 1912 (R. W. Dawson) ; female, Monroe Canyon, Sioux County, Neb- 

 raska, August 20, 1908 (J. T. Zimmer) ; female, Riley County, Kan- 

 sas, July 19 (G. A. Dean) ; female, Riley County, Kansas, September 

 1 (Popenoe) ; female, Riley County, Kansas, September 6 (Popenoe) ; 

 3 females, Greeley County, Kansas (F. X. Williams) ; female, Morton 

 County, Kansas, August 5, 1911 (F. X. Williams) ; female, Colorado 

 (Popenoe) ; female, Balmorhea, Texas, October 5, 1924 (Sanborn and 

 Scholls) ; female. Phantom Lake, Fort Davis Quad, Texas, June 1, 

 1916 (F. M. Gaige) ; 2 females, San Augustine, New Mexico, August 

 29; female, San Augustine, New Mexico (Cockerell) ; female, Mesilla, 

 New Mexico, August 23 (Townsend) ; female, Mesilla, New Mexico, 

 August 21 (Cockerell) ; female, Winslow, Arizona, July 31 (Barber 

 and Schwarz) ; 2 females, Florence, Arizona (C. R. Biederman) ; 

 female, Emery County, Utah, August 14, 1921 (Grace O. Wiley). 

 Paratypes are in the following collections: United States National 

 Museum, American Entomological Society of Philadelphia, Univer- 

 sity of Kansas, University of Michigan, University of Nebraska, Kan- 

 sas Agricultural College, South Dakota Agricultural College, New 

 Mexico Agricultural College, University of Minnesota, O. A. Stevens, 

 C. N. Ainslie, and the author. 



