BRUES: PARASITIC HYMENOPTERA. 35 



Type — No. 2104-2105, M. C. Z., Florissant, Col. (No. 13850, 

 reverse No. 14,052, S. H. Scudder Coll. Paratypes Nos. 2106-2107, 

 M. C. Z., (Nos. 6452 and 11,952, S. H. Scudder Coll.). 



Two of the specimens are finely preserved, showing the dorsal view 

 of the body, antennae, part of legs, and most of both pairs of wings. 

 It is a very large species and probably belongs to the subgenus Stenich- 

 neumon Thomson, to judge from its robust build and thickset, taper- 

 ing antennae with short joints. The cubito-discoidal cell appears to 

 be somewhat longer in the type specimen, but I think all are undoubt- 

 edly the same species. The discocubital vein is without trace of the 

 stump of a vein which is present more or less distinctly in all recent 

 species. 



Ichneumon obduratus, sp. nov. (Fig. 23.) 



Female. Length about 8 mm. Black, legs varied with rufous or ferrugi- 

 nous. Head rather small, more or less subquadrate, its surface subshining. 

 Antennae involute, the basal joints about twice as long as thick and the apical 

 ones more or less quadrate; flagellum apparently without pale annulus. 

 Mesonotum microscopically sculptured, subopaque; parapsidal furrows 

 not defined. Scutellum with a broad 

 transverse depression at its base; its 

 surface moderately convex and with 

 scarcely evident raised lateral margins. 

 Areola of metanotum large, hexagonal, 

 the basal and middle lateral areas sepa- 

 rated. Abdomen black, the post- 

 petiole distinctly punctate. Legs ru- Fig. 23. — Ichneumon obduratus, sp. 

 fous or ferruginous, including the coxae. nov " ^ pe - 



Wings hyaline, veins fuscous, the sub- 

 median cell considerably longer than the median, the transverse median vein 

 but little oblique. Discocubital vein evenly and strongly curved, without 

 trace of any stump of a vein. Areolet of moderate size, very narrow above; 

 stigma narrow, black with pale base; marginal cell long, the second section 

 of the radius two and one-half times as long as the first. 



Described from one specimen. 



Type.— No. 2108, M. C. Z., Florissant, Col. (No. 6691, S. H. 

 Scudder Coll.). 



Ichneumon primigenius, sp. nov. (Fig. 24.) 



Female. Length about 12-13 mm. Body dark, but considerably tinged 

 with brown, especially the thorax and the apical portion of the abdomen. 



