8S TRAXS. ST. LOUIS ACAD. SCIENCE. 



tubercle placed J of the way to its tip, and very large and prominent; the 

 2 usual carina? reaching § of the way to its tip. Joint 2 with a round 

 fovea in its anterior angle. Joints 2 and 3, with a subobsolete transverse, 

 medial stria widely interrupted on the dorsum. Joint 1 with a narrow, 

 terminal white line; 2-6 with a white fascia on their terminal J, very nar- 

 rowly interrupted above on 2, but more and more widely so in each suc- 

 cessive joint, till in 6 if is reduced to a mere lateral white dot. Venter 

 yellowish-white. Four front legs very pale rufous, hind legs pale rufous ; 

 all the coxae and trochanters white ; tips of the 4 front tarsi, and the whole 

 of the hind tarsi fuscous. Wings hyaline; veins black, radius whitish; 

 stigma black, whitish at base, twice as long as wide. Bullae indistinct, 

 the wings being in bad order. Length $ .19 inch. Front wing o* .16 

 inch. 



One % ; 2 unknown to me. Very near maculifrotis. Cress. 

 ($ only described), and may possibly be the other sex of that spe- 

 cies. Differs by its white face and orbits, and by the legs being 

 more marked with white, which are common sexual characters 

 in % IchneumonidcB ; and also in the pale markings of the sternum 

 and abdomen, which may possibly be also sexual characters. The 

 clypeus, however, is not " profoundly impressed on each side," 

 unless by this phrase is meant the usual fovea?, which are located, 

 as in all Ichnewnoniclce, in the clypeal suture ; neither is its "ba- 

 sal margin prominent," nor is the metathorax "without elevated 

 lines." 



BasSUS bicapillaris, n. sp.—^.— Black. Head with the clypeus piceo- 

 rufous and truncate at tip, its anterior edge reflexed and in the middle 

 slightly depressed and emarginate. Mandibles and palpi white. Antennae 

 f as long as the body. Thorax very finely and regularly punctate so as to 

 appear subglabrous and polished. Tegulae, a short line beneath the front 

 wing, a roundish spot before it, and a subclavate line adjoining the hu- 

 meral suture above, all three of them nearly contiguous, white. Scutel 

 rufous. A capillary white line extending in a semicircle from the front of 

 the base of one hind wing behind the scutel to the front of the base of the 

 other one, and a similar line parallel with the first and extending from- 

 the back of the base of one hind wing to the back of the base of the other 

 one. Abdomen with joints 1-3 rugoso-punctate, each gradually less so,- 

 the remaining joints gradually almost glabrous and polished. No trans- 

 verse striae. Joint 1 with a wide, flattish, subglabrous, longitudinal carina 

 bifurcating in front, and a narrow, acute, sublateral one terminating in a 

 small, glabrous tubercle at each hind angle. Joint 2 with similar carinae,. 

 fading away at the middle. Venter blackish. Legs pale rufous. Hind 

 trochanters white. Terminal \ of hind femora, and whole of hind tarsi, 

 black. Hind tibiae black, with their basal £ white. Wings hyaline; veins 

 black, paler on the postcosta; the radius whitish; stigma black, 3 times as. 



