ICHNEUMONID.^. 299 



I. zebratus. — 9 • Rather robust, closely punctured but shining, head narrow- 

 ed beneath, yellow, middle of the vertex, from the base of antennae to occiput, 

 and tlie occiput behind, black; antennse slender, black, with a broad white an- 

 nulus, basal joint beneath yellow; a large square mark on posterior middle of 

 mesothorax. a sutural line on each side in front, a line on collar, tegulse, a line 

 beneath, a large mark on each side of pleura, scutellum, post-scutellum, and 

 two large spots on metathorax, confluent anteriorly, all yellow; central area of 

 metathorax large, subquadrate ; wings pale yellowisli-hyaline, nervures and 

 and stigma pale luteous; legs ferruginous, the four anterior coxse beneath, the 

 posterior pair behind, and at tips beneath, all tlie trochanters, the anterior legs 

 in front and base of posterior tibise, yellow; abdomen with a broad, apical, yel- 

 low band on the four basal segments, and a transverse apical spot on each of 

 the remaining segments. Length 6 lines. 



Hab. — Illinois, (Dr. Lewis). One 9 specimen. A very pretty aiid distinct 

 species. 



I. multor, (Harris' Catal.). — %. Very near to flavizonatus, but differs by the 

 face being black, with a yellow stripe on each side, and two approximate sjiots 

 beneath the antennae; by the immaculate metathorax and first abdominal seg- 

 ment, and by the second segment having a fulvous band at both base and apex ; 

 the third, fourth, sixth and seventh segments have each a narrow, pale yel- 

 low fascia, broadest on the third segment: the legs are colored as in flavizona- 

 tus, except that the femora are pale fulvous. Length (U lines. 



Ilab. — Canada, Massachusetts. Two % specimens. 



I. zelotypus. — %. BUiek, subopaque; face and clypeus pale ferruginous, 

 shading into yellow on the sides; j^alpi yellow; antennce long, black, basal 

 joint yellow beneath; tegulse, a short line in front and another beneath, yellow- 

 ish; scutellum and post-scutellum polished, dull ferruginous; metathorax ru- 

 gose, the elevated lines well defined, the central area large, quadrate ; wings 

 yellowish-hyaline, dusky at tips; legs yellow, the four anterior coxee at base 

 beneath, the posterior pair entirely, the four anterior femora at base behind, the 

 posterior pair except base, and the tips of their tibise, black, tips of tarsi dusky ; 

 abdomen long, rather broad, flattened; first segment slender, broadly dilated 

 at tip, which is uneven, black, with a yellow apical band; second and third seg- 

 ments black, with a broad yellow band at tip, remaining segments ferruginous 

 or brown, beneath dull ferruginous. Length 6.V — 9 lines. 



Hab. — West Virginia, (Eidings). Two % specimens. 



I. calitergus, (Harris' Catal.). — 9- Rather robust, black; head tinged with 

 dull rufous, the anterior orbits dull ferruginous; antennee stout, brown-black, 

 M'ith a broad yellowish annulus; thorax entirely black, except the scutellum, 

 which is yellow and polished; wings yellowish-hyaline, nervures brown, stig- 

 ma fulvous; legs black, the tibias with a broad yellowish annulus at base, tarsi 

 brownish-fulvous; abdomen black, with a yellow apical band on the three ba- 

 sal segments, and a central yellow spot on the sixth and seventh segments. 

 Length 6 lines. 



Ilab. — Maine, (Harris' Collection). One 9 sj)ecimon. 



I magniceps. — 9- Black, head and thorax shining, abdomen opaque; head 

 unusually large, quadrate, not narrowed beneath, white, the middle of the ver- 

 tex, from the insertion of the antennse to the ocelli, the posterior part of the oc- 

 ciput, and the ti2)s of mindibles, black; antennas rather short, not robust, black, 



