42 PROCEEDINGS OF THE NATIONAL. MUSEUM vol. 74 



tarsi stramineous; wings hyaline, veins brown, stigma paler. Ab- 

 domen ferruginous, apical tergites sometimes blackish. 



Male. — Head thicker, temples less strongly sloping; antennae 

 nearly as long as body, tapering toward apex; propodeum more 

 coarsely rugose, apical carina complete and strong throughout, not 

 more so at angles; abdomen very slender, second tergite three or 

 more times as long as broad at base. 



Entire face and clypeus, mandibles except teeth, scape below white ; 

 antennal annulus centering on flagellar joint 13, lower part of pro- 

 pleura, mesosternum, more or less of lower part of mesopleurum, a 

 sutural spot below hind wing, and apex of metapleurum more or 

 less distinctly white ; front and middle coxae and trochanters largely 

 or entirely and hind tarsus entirely white, hind coxa more or less 

 white below, hind tibia fuscous to black at base and apex, as is 

 rarely also base of basitarsus. 



Distributed throughout southeastern Canada and the eastern half 

 of the United States. 



The type is from Delaware and that of erythrogaster from Wis- 

 consin, The specimens in the national collection are as follows: 

 Canada — (C. F. Baker collection), two females. Massachusetts — 

 (Baker collection), one male. Connecticut — East Kiver, ex Acro- 

 hasis on hickory, C. R. Ely, one female, one male; Lyme, June 16, 

 1918, W. Middleton, one female.. New York — one female; Ithaca, 

 F. H. Chittenden, one female, one male; Oswego, June 1, 1896, one 

 male. Pennsylvania — West Fairview, July 31, 1909, and July 22, 

 1911, W. S. Fisher, two females; Rockville, May 15, 1910, W. S. 

 Fisher, one female; Camphill, August 13, 1910, W. S. Fisher, one 

 female; Heckton Mills, June 22, 1910, W. S. Fisher, one female; , 

 Harrisburg, May 7, 1910, W. S. Fisher, one female; North Cumber- 

 land, May 30, 1908, P. R. Myers, one female; Inglenook, June and 

 September, W. S. Fisher, three females; June 20, 1909, P. R. Myers, 

 one female ; Highspire, W. S. Fisher, two females. Ohio — ^Wooster, 

 October 15, 1896, one female ; Bono, November 20, 1924, ex Pyrausta 

 futilalis, C. R. Neiswander, one male. Maryland — College Park, Oc- 

 tober 8, 1924, R. M. Fouts, three females; Beltsville, May 24, 1917, 

 W. L. McAtee, one female; Glen Echo, R. M. Fouts, one female, 

 three males ; Cabin John, R. M. Fouts, one female ; Plummer Island, 

 one male; W. Middleton, one female. District of Columbia — three 

 females, one male. Virginia, one female; Chain Bridge, October 2, 

 1921, J. R. Malloch, one female; Pimmit Run, October 1, 1919, R. 

 A. Cushman, one female ; Difficult Run, October 28, 1917, W. L. Mc- 

 Atee, one female; Great Falls, R. P. Currie, S. A. Rohwer, H. L. 

 Viereck, three females; Falls Church, September 9, 1912, C. T. 

 Greene, one female; July 8, 1913, W. Middleton, one female; Hern- 



