NO. 2296. CERTAIN GENERA OF ICHNEUMON-FLIES—CUSHMAN. 



379 



KEY TO FEMALES OP NORTH AMERICAN SPECIES. 



General body color fulvous or ferruginous luggeri ( Ashmead) 



General body color black \ 



I. Mesoscutum rufous; postpetiole as long as wide at apex; second tergite fully as 

 long as wide; ovipositor sheath barely longer than first tergite. .similis, new species 



Mesoscutum black; postpetiole much shorter than wide at apex; second tergite wider 



than long; ovipositor sheath much longer than first tergite 



nigridorsum, new species. 



NEUOPISTHUS SIMILIS, new species. 



Differs from Schmiedeknecht's description of the genotype only in 

 the shape of the areola and the length of the petiolar area, both of 

 which character are included in his generic description, and in having 

 a dark longitudinal mark on the disk of mesoscutum, the pronotum 

 partly, metapleura entirely, and propodeum laterally reddish, and 

 the mesonotum no darker than mesopleura. 



Female.— Length, 4.5 mm. Head polished, frons and face weakly 

 punctured; thorax subpolished, weakly punctured, more strongly so 

 on disk of mesoscutum; propodeum laterally and posteriorly punc- 

 tate, medially polished, areola about two-thirds as wide as long, hex- 

 agonal, petiolar area not reaching nearly to middle of propodeum; 

 basal vein weakly curved; second abscissa of cubitus much longer 

 than intercubitus ; abdomen densely punctate; postpetiole as wide 

 as long; second tergite as long as v/ide at apex; ovipositor sheath 

 but little longer than first tergite. 



Head piceous black; cheeks, mouth parts, clypeus, face below and 

 at sides, and semicircular spot at top of eye whitish; s-cape and pedi- 

 cel below rufous; pronotum black, rufous laterally, dorsal and ven- 

 tral margins white ; an elongate spot between notauli blackish ; thorax 

 otherwise rufous; propodeum blackish, rufous laterally; legs strami- 

 neous, front and middle coxae and all trochanters white, hind tibiae 

 white with obscure apical and subbasal dark annuli; abdomen black- 

 ish, tergites apically rufous. 



Type-locality. — Wood County, West Virginia. 



Type.— Cat. No. 22001, U.S.N.M. 



Described from one female captured by Dr. A. D. Hopkins on a goose- 

 berry bush May 2, 1891, and recorded under Jiis West Virginia No. 

 3200. 



NELIOPISTHUS NIGRIBORSUM, new species. 



Differs from similis principally as follows: 



Female. — Length, 4 mm. 



Head and thorax more strongly and densely punctate; propodeum 

 more strongly sculptured, areola as well as petiolar area transversely 

 rugulose ; basal vein strongly curved ; postpetiole wider at apex than 



