26 PEOCEEDIXGS OF THE NATIONAL MUSEUM vol. 79 



Wings subhyaline, with a faint yellow tinge near base and along 

 costa; venation normal; third vein with one hair at base; costal 

 spine vestigial. 



Female. — Front at vertex 0.304 of the head width (average of 

 five: 0.33; 0.29; 0.32; 0.3; 0.28), widening only slightly to base 

 of antennae; parafrontals somewhat paler than in male, the yellow 

 not extending below lowermost frontals; two pairs of proclinate 

 orbitals present; face wholly white or silvery, the sides narrower 

 than third antennal joint; hind tibiae sparsely ciliate with one longer 

 bristle near middle ; claws and pulvilli short. 



Length, 7 to 9 mm. 



Type.—\].S.^M. No. 43342, from Plummers Island, Md. 



Described from 42 male and 8 female specimens. In the United 

 States National Museum: 1 male. Lick Brook, Ithaca, N. Y., August 

 12, 1928 (H. A. Scullen) ; 3 males, Sebago Lake, Me., September 6. 

 7, and 9, 1914 (C. H. T. Townsend) ; 1 male, Orono, Me., August 17, 

 1928 (O. A. Johannsen), "ex Cingilia lutenana Dru."; 1 male, Lake 

 Metigoshe, Turtle Mountains, N. Dak., June 20, 1918 (J. M. Al- 

 drich) ; 1 male, Mandan, N. Dak., June 16, 1918 (J. M. Aldrich) ; 1 

 male, Brookings, S. Dak., June 16, 1891 (J. M. Aldrich) ; 1 male, 

 Big Stone City, S. Dak., June 8, 1918 (J. M. Aldrich) ; 3 males and 

 1 female, Lafayette, Ind., September 15, 1917, and July 16, 1915, a 

 pair in copula (J. M. Aldrich) ; 2 males, Lawrence, Kans,, without 

 date (J. M. Aldrich) ; 1 male, Great Falls, Va., July 27, 1920 (C. T. 

 Greene) ; 1 male, Chain Bridge, Va., July 1, 1923 (J. M. Aldrich) ; 

 1 male, Rosslyn, Va., June 25, 1913 (R. C. Shannon) ; 1 male. Ingle- 

 nook, Pa., May 28, 1911 (W. S. Fisher) ; 1 male and 1 female in 

 copula, Beltsville, Md., September 2, 1917 (McDermott and Barber) ; 

 3 males, Plummers Island, Md., May 7 and July 11, 1909 (W. L. 

 McAtee); and 1 male. Rock Creek, D. C, June 17, 1916 (G. E. 

 Quinter). In the American Museum of Natural History: 3 males 

 and 1 female. Tuxedo, N. Y., July 1, 23, and August 2, 1928 (C. H. 

 Curran) ; 6 males and 2 females, Avon Old Farms, Avon, Conn., June 

 6 to 19, 1929 (C. II. Curran) ; 1 male, Salt Meadows, Newark, N. J., 

 August (A. J. Weidt) ; 1 male, Atherton, Mo., June, without col- 

 lector's label; 1 female, Saugus, Mass., September 5, 1914 (H. M. 

 Parshley) ; and 1 male, labeled No. 379b, without locality. In the 

 Illinois State Natural History Survey collection: 1 male, Antioch, 

 111., August 1, 1924 (T. H. Prison) ; 1 male, Urbana, 111., August 12, 

 1901 (E. G. Titus) ; and 1 female, without locality. In my collection : 

 3 males and 1 female, Brownhelm, Ohio, August 19, 1920 (H. J. 

 Reinhard) ; 1 male, Sunfield, Mich., June 17, 1922 (L. G. Gentner) ; 

 and 1 male, Ames, Iowa, July 19, 1929, " ex Lwperina stijpata " (G. C. 



