Viereck — New Gentcs and Species of Ichneumon- Flies. 171 



to the base, spiracle of second tergite a little nearer to the apex than to 

 the base of the tergite, fourth tergite blackish at apex, in the middle and 

 elsewhere reddish, fifth mostly black, reddish laterally, sixth and seventh 

 tergites entirely black, sternites beyond the petiole partly yellowish and 

 fuscous, mostly stramineous, abdomen obliquely truncate at apex, ex- 

 serted portion of the sheaths of the ovipositor hardly as long as the apical 

 truncature, petiole with a fossa near the postpetiole. 



Allotype. — Essentially as in the type, scape, mostly pale brown, anten- 

 nae 34-jointed. Collected somewhere between Glencarlyn and the mouth 

 of Four-mile Run along Four-mile Run, Va., June 17, 1914 (W. L. 

 McAtee). 



Paratypes are from Plummers Island, April 28, 1916 (L. O. Jackson) ; 

 AVashington, D. C, Mar. 6, 1913, in grass (W. L. McAtee); Maryland 

 near Plummers Island, June 7, 1914, and April 28, 1915 (W. L. McAtee) ; 

 Anacostia, D. C, Aug. 9, 1914 (W. D. Appel) and Ardmore, S. Dak., 

 Aug. 13, 1915 (E. G. Holt). The female paratype from Anacostia has 

 the scape pale brown beneath, a quadrangular subsessile areolet, and the 

 post petiole with its apical half reddish; the Ardmore female paratype 

 has the post petiole mostly reddish and the scape pale brown beneath. 

 Judging from a study of eight females, the scape is usually pale brown 

 beneath ; what probably represents an extreme variety is a female from 

 Maryland near Plummers Id., May 9, 1913 (W. L. McAtee), in which 

 the areolet is subsessile, the second tergite is black with a reddish apical 

 band, the third tergite black with a reddish apical band that broadens 

 laterally and in the fourth and fifth tergites having the former mostly 

 reddish but black dorsally and the latter mostly black with the outer 

 fourth reddish. 



