36 PROCEEDINGS OP THE NATIONAL MUSEUM vol.83 



row of stronger bristles ; genitalia as in P. singularis, but the outer 

 forceps more broadly rounded at the apex. 



Legs rather slender, black ; claws and pulvilli elongated. 



Wings grayish hyaline; venation bare except third vein, which is 

 setulose almost to small cross vein; fourth vein with a rounded 

 stumpless bend and broadly concave beyond to costa; last section 

 of fifth vein about one-fourth the length of preceding section ; apical 

 cell narrowly open far before wing tip ; costal spine strong ; epaulets 

 black. 



Female. — Front at vertex 0.288 of the head width (five measured 

 as follows: 0.3; 0.27; 0.29; 0.28; 0.3) ; outer verticals developed but 

 smaller than inner ones; orbitals two proclinate pairs; antennae 

 shorter than face, third segment slender, four to five times the length 

 of second ; first abdominal segment usually without median marginal 

 bristles (two specimens with a pair present) ; front tarsi laterally 

 compressed and swollen, the claws and pulvilli minute or atrophied. 



Length. — 5.5 to 9.5 mm. 



Type.—Mfi\Q, U.S.N.M. no. 44770, from College Station, Tex. 



Remarks. — Described from 50 specimens. In the United States 

 National Museum : 2 males, Knoxville, Tenn., Ma}^ 25 (J. M. Aldrich) ; 

 1 male, Birmingham, Ala., June 4, 1917 (J. M. Aldrich) ; 1 female, 

 Lafayette, Ind., September 12, 1918 (J. M. Aldrich) ; 1 female, 

 Riley County, Kans., May 29 (Popenoe) ; 1 female, Manhattan, 

 Kans., May 30, 1928 (R. C. Smith) ; 1 female, labeled " Ga." with- 

 out additional data; 1 male and 1 female, Clemson College, S.C., 

 October 10, 1908 (C. H. T. Townsend) ; 1 female. Holly Springs, 

 Miss., September 7, 1890 (F. AV. Mally) ; 1 male, Miami, Fla., 

 September 6 (C. H. T. Townsend) ; 1 female, Washington, D.C., 

 September 18, 1921 (J. M. Aldrich) ; 1 female, Rock Creek, D.C., 

 flowers chrysanthemum, May 30, 1917 (C. H. T. Townsend); 1 

 male. Eastern Branch near Bennings, D.C., August 29, 1915 (W. L. 

 McAtee) ; 1 male, Washington, D.C., June 27 (Townsend) ; 1 fe- 

 male, Washington, D.C., October 2, 1917 (W. L. McAtee) ; 1 female, 

 Anacostia, D.C., September 24, 1914 (R. C. Shannon) ; 1 female, at 

 light, Plummers Island, Md., September 2, 1914 (R. C. Shannon) ; 

 1 female, Chesapeake Beach, Md., October 14, 1926 (J. M. Aldrich) ; 

 1 female, Arlington, Va., October 6, 1913 (R. H. Hutchison) ; 1 

 male, Lincoln, Nebr., July 7, 1922 (O. C. Bradbury) ; 1 female, 

 Marfa, Tex., June 13, 1917 (J. M. Aldrich) ; 1 female, Raleigh, 

 N.C. (C. S. Brimley). In the Kansas University Museum :1 male, 

 Las Cruces, N.Mex., September 25, no collector's label. In my col- 

 lection: 9 males and 16 females, College Station, Tex., April to 

 October, 1917-1930 (H. J. Reinhard). In the collection of D. G. 

 Hall, 1 female, Manhattan, Kans., May 10, 1929 (D. G. Hall). 



