ART. 16 NORTH AMERICAN ICHNEUMON-FLIES CUSHMAN 51 



slightly thickened in middle, tapering and flattened below toward 

 apex, in male of nearly uniform thickness except apical taper. 

 Thorax long, distinctly compressed, polished, at most sparsely sculp- 

 tured ; humeral margins of pronotum swollen and angled by epomia ; 

 notauli complete, the mesoscutal lobes very high ; scutellum narrow 

 immargined, its basal ridges very high and thick; propodeum with 

 only one complete transverse carina, the basal, apical carina always 

 wanting medially and usually represented only by very long apo- 

 physes; spiracle large, oval; stigma very narrow, radius before mid- 

 dle ; areolet elongate, wider at apex than at base, recurrent at or near 

 apex; postnervulus broken at or near middle; nervellus reclivous, 

 its upper abscissa perpendicular to cubitella ; legs slender. Abdomen 

 slender, usually with long sparse hairs toward apex; first sternite 

 fused with tergite and extending beyond spiracles, postpetiole only 

 a little wider than petiole; sheath not or barely as long as abdomen; 

 ovipositor compressed, sagittate at apex. 



This is a typically tropical genus containing only one North 

 American species. 



POLYCYRTUS NEGLECTUS Cushman 



Figs. If, 3/f, Gfc 



Polycyrtus tiegJectus Cushman, Proc. U. S. Nat. IMus., vol. 67, art. 23, 1926, 

 p. 5, females, males. Type.— Cnt. No. 27683, U.S.N.M. 



The original description of this species is so recent and so detailed 

 (hat a full description here is unnecessary. 



A few points suggested by the above generic description may be 

 added. The occipital carina is not especially prominent nor is it 

 toothed or interruoted below; eyes very slightly convergent; upper 

 tooth of mandible very slightly longer than lower; antennae about 

 three-fourths as long as body. 



In addition to the 11 females and 16 males of the type series the 

 National collection contains the following specimens: Maryland — 

 Glen Echo, R. M. Fonts, one female, three males; Cabin John, June 

 23, 1917, R. M. Fonts, two females. Pennsylvania — Inglcnook, June 

 20, 1909, P. R. Myers, one female; Marsh Run, York County, July 

 18, 1909, P. R. Myers, one male. Connecticut — Lyme, August 28, 

 1909, A. B. Champlain, two males. 



The C-onnecticut specimens extend the known range of the species 

 about 200 miles farther to the north. 



Genus POLYCYRTIDEA Viereck 



Polyayrtidea Viereck, Proc. U. S. Nat. Mus., vol. 46, 1913, p. 382. Oenofi/pe. — 

 Polycyrtidca gracilis Viereck. 



If I interpret the very brief original description correctly Mesos- 

 tenits jnmllus Cresson and Agrypon favopictus Ashmead. both from 



