NEW GENERA AND SPECIES OF ICHNEUMON-FLIES. 



By E. A. CusHMAN, 



Of the Bureau of Entomoloyy, United States Department of Agriculture. 



This paper contains the descriptions of two new genera and eleven 

 new species of Ichneumonidae together with notes on a few ah-eady 

 described species. 



Subfamily Cryptinae. 



TRIBE HEMITELINL 



Genus CHRYSOPOCTONUS Cushman. 



The following key should serve to distinguish the North American 

 species of this genus including the new one described below : 



1. Ferruginous, head black, abdomen sometimes piceous at apex. 



atriceps (Ashmead) 

 Otherwise colored 2 



2. Head ferruginous bicolor, new species. 



Head black 3 



3. Hind coxae in male red (female unknown) chrysopae (Ashmead) 



Hind coxae in male black 4 



4. Postpetiole in female polished and practically impunctate, in male sparsely 



punctate rileyi ( Ashmead ) 



Postpetiole in female laterally sparsely but coarsely and distinctly punctate, 

 in male densely so all over patruelis Cushman 



CHRYSOPOCTONUS BICOLOR, new species. 



Distinct from all of the other North American species in its fer- 

 ruginous head. 



Female. — Length 4 mm.; antennae 3 mm. 



Head anteriorly densely punctate, posteriorly sparsely so; temples 

 weakly convex; postocellar line nearly twice ocell-ocular line; face 

 twice as wide as long; malar space longer than basal width of mandi- 

 ble; cheeks strongly convex. Pronotum obscurely shagreened and 

 punctate above, striate below ; mesoscutum opaque shagreened, medi- 

 ally densely punctate, laterally sparsely so; mesopleurum polished, 

 prepectus punctate; scutellum polished impunctate, lateral areas 

 strongly striate; metapleurum and propodeum rugulosely roughened ; 

 abdomen polished throughout, postpetiole with a few faint punctures 

 posteriorly. 



No. 2494. — Proceedings U. S. National Museum, Vol. 64. Art. 4. 



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