AMERICAN IIYMENOPTERA, 207 



Ichnenmon Lariae, Curtis, Ross, 2d Voy. Appendix, p. Ixi, pi. A, fig. 1. — 

 Antemine curled; nifims, tips of antennse, head, underside of the trunk, with 

 the coxre, and a spot and a broad stripe on the abdomen black. Clothed with 

 very short brownish pubescence, pale castaneous, minutely punctured ; an- 

 tennae and head black, the former filiform, the basal joint rufous, third and 

 four following joints paler red; trunk black, the upper surface of the meso- 

 thorax and scutellum rufous and shining, metathorax dull and darker above, 

 with a black furcate stripe down the back; abdomen ovate, very thickly punc- 

 tured, a black dot at the base of the second segment, the third with a broad 

 black stripe down the middle, concave on each side, the remainder black with 

 a rufous stripe on each side at the base of the fourth segment, petiole rather 

 short, narrowed at the base; wings tinged with yellowish-fuscous, nervures and 

 stigma ferruginous ochre, areolet quinquangular; legs rather stout, coxae and 

 trochanters black, the former with a red spot on the upper side in tiie hinder 

 pair. Length 5 lines. 



This Ichneumon infested the larvae of the Laria Rossii, from which it was 

 bred early in July, another was taken on the 8lh of the same month, but they 

 were not very numerous. 



Hah. — Arctic America. Quite distinct from auytliing known 

 to u)e. 



Ichneumon Vinctus, Say, Contrib. Macl. Lye. i, p. 70, % . — Body black; head 

 above the antennae and occiput, black; orbital line interrupted behind, and 

 all beneath the antennae except the incisure, white; antennae, basal joints 

 beneath, white; collar with a white line; thorax with a short line above the 

 anterior wing and another below it, from the anterior extremit}' of these lines, 

 a white line proceeds, and is interrupted before: two impressed dorsal lines 

 obsolete behind; scutel and obsolete point behind it, white; wings, central 

 cellule pentangular, transverse; metathorax with somewhat elevated rugae, 

 enclosing a pentangular space, from the angles of which abbreviated lines 

 diverge, the two posterior of which terminate at the short tubercles; feet, 

 anterior and intermediate pairs, pale whitish-yellow, the coxae white with a 

 black spot behind, the thighs with a black line and tibiae of the anterior pair 

 also with a black line; posterior pair black, second, third and fourth joints of 

 the tarsi, white; abdomen bright rufous, immaculate. Length .50 inch. 



ITab. — Indiana. Closely allied in some respects to daplkatua, Suy, 

 page 180, No. 171. 



Ichneumon ferrugator, Kirby, Faun. Bor-Am. iv, p. 258. — Black, rather 

 glossy, very thickly punctured with minute and often confluent punctures. 

 Head transverse, triangular, not quite so wide as the middle of the trunk; 

 anterior margin of the face rounded; palpi reddish; eyes long, subelliptical; 

 antennae shorter than the trunk, spirally convoluted; trunk oblong, suhcom- 

 pressed ; scutellum subtriangular, rounded at the apex; metathorax armed on 

 each side with a sliort tooth, with several elevated longitudinal and oblique 

 lines; legs with decumbent whitish hairs, anterior tibiae obscurely, and all 

 the tarsi, rufous; wings embrowned with a rufous tint, nervures darker; 

 abdomen lineari-lanceolate, rufo-ferruginous, with the first joint, which is 

 dilated at the apex, black; footstalk channeled longitudinally on each side. 

 Length 7 lines, 



Jhib. — Arctic America. Probably the same as rujioentris^ Brull^, 

 page 173, No, 137. 



