WALSH DESCRIPTIONS OF N. AM. HYMENOPTERA. 85 



the clypeus, mandibles except their teeth, and palpi, all white. Clypeus 

 subtruncate at tip, its anterior edge reflexed and emarginate in the middle 

 so as to appear bilobate. Antennae | as long as the body, brown-black, 

 beneath dull rufous except the ist joint; ist joint of flagellum thrice as 

 long as wide. Thorax finely and rather sparsely punctate and polished. 

 The tegulae, a short line beneath the front wing, a spot before it, and 

 a short subclavate line adjoining the humeral suture above, all three of 

 them almost contiguous, a large subquadrangular spot on the scutel 

 and a transverse line behind it, all white. Metathorax finely rugose with 

 the carinae well defined, the basal area absent, the central area quadrate 

 and confluent with the posterior area and the cross-carinse of the lateral 

 areas absent. Meso- and meta-sternum pale rufous. First joint of the ab- 

 domen rugose, with two very distinct longitudinal carinae obsolete towards 

 the tip. and a transverse white line on the middle \ of its terminal edge, 

 the outer \ of that edge elevated into a glabrous, highly polished carina! 

 Joints 2-4 rugoso-punctate, each gradually less so, 1-3 with a transverse 

 stria behind the middle, 4 with one before the middle, all filled with 

 short, parallel, longitudinal rugje which are coarser on joint i ; the re- 

 maining joints more and more glabrous and polished; 2-7 each with 

 a very narrow terminal whitish or pale rufous line. Venter blackish, 

 irregularly blotched with white. Legs pale rufous, the anterior coxze 

 and trochanters white ; the anterior surface of the 4 front legs, especially 

 at the knees, whitish ; the extreme tip of the hind femora and the whole 

 of the hind tarsi brown-black; hind tibiae with the basal \ and termina. 

 \ black, the intervening f white. Wings hyaline; veins black; radius 

 pale rufous; stigma black but basally whitish, and twice as long as wide. 

 (J Differs from $ in the entire face and the basal joint of the antennae 

 below being white, and in the tips of abdominal joints 2 and 3 being some- 

 times marked laterally with a distinct, transverse, white spot. Length cf 

 19-.22 inch; $ .21-.27 inch. Front wing ^ .22 inch; J .22-.25 inch. 



Two 'S , three 2 . Comes very near to the B. -Tnaculifrons. 

 Cress., the 2 only of which is described ; but § differs in the me- 

 tathoracic carinae being very distinct, instead of absent, in the hind 

 tibiae being annulate with white, and in the abdomen not being 

 laterally spotted. From B. orbitalis^ Cress. (? only described) 

 $ differs in having a white spot on the face, in having no white 

 spot on the pleura behind the anterior coxae, in abdominal jomt 2 

 not being crenulate basally, and in abdominal joints 2-4, instead 

 of 1-3, being transversely striate. From both species it differs in 

 the antennae being longer and rufous beneath, and in the pectus 

 being rufous, not black. The three species referred to Bassus 

 b}' Say, evidently from the long ovipositor, do not belong here, 

 and are probably Braconidce. 



Bassus trlpictlcras, n. sp.—c?$— Differ from thed"? of the above only 

 as follows : — i. The meso- and meta-sternum are black, not rufous. 2. 



