204 E. T. CRESSON, 



nal segments two to four, ferruginous; base of posterior coxse and spot on disc 

 of abdominal segments two to four above, blackish; wings subhyaline; legs 

 Blender, simple ; abdomen narrow, second segment transversely depressed at 

 base. Length .30 inch. 



Hah.— White Mts., N. H. (Morrison). 



Y. exiguus. 



Ichneumon exiguus, Cress. Proc. Ent. Soc. Phil, iii, p. 182, 9 • 

 Hah. — Colorado. Very robust, black, shining; scape, mandibles, 

 legs and abdomen except first segment, ferruginous; head subrotund, 

 face short, subprotuberant ; antennae short, robust, with submoniliform 

 joints, scape large, swollen ; thorax polished, impunctured; metathorax 

 deeply excavated behind, with well-defined elevated lines; wings hya- 

 line ; legs short and robust, coxae simple, femora swollen ; abdomen 

 broadly fusiform, polished, impunctured, postpetiole broad, petiole un- 

 usually robust, gastrocoeli obsolete. Length $ .23 inch. 



8. fungor. 



Ichneumon fun gov, Norton, Trans. Am. Ent. Soc. i, p. 306, % . 

 Hah. — Ct., N. Y., Pa., Del., 111. Long, slender, black; clypeus, 

 antennae, legs and abdomen, pale ferruginous; mandibles and tegulae 

 yellow; head large, transversely subquadrate, strongly punctured, 

 ch'peus nearly as long as broad ; thorax strongly punctured ; wings 

 subhyaline; legs slender, simple, posterior tibiae and tarsi dusky; 

 abdomen long, slender, subcylindrical, shining, postpetiole narrow, 

 gastrocoeli obsolete. Length % .35 — .40 inch. 



9. quadriceps. 



Ichneumon quadriceps., Cress. Trans. Am. Ent. Soc. i, p. 312, % 9 . 

 Hah. — Can., Ct. This is a very long narrow species with quadrate 

 head, and short, robust legs; ferruginous, with head, posterior femora 

 and tibiae and two terminal segments of abdomen, black; antennae 

 short; wings narrow, subhyaline; abdomen much longer than head 

 and thorax, narrow and cylindrical, gastrocoeli obsolete. Length 

 .40 inch. 



10. vincibilis. 



Ichneumon vincihilis, Cress. Trans. Am. Ent. Soc. i, p. 312, 9 • 

 Hah — Illinois. Form of i/efte ; entirely ferruginous except three 

 apical segments of abdomen which are black, the antennae are some- 

 times more or less black above and at tips with a whitish annulus on 

 flagellum ; head large and broad; wings hyaline; legs slender and 

 simple ; gastrocoeli very transverse. Length 9 .27 inch. 



