MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPIDiE. 235 



Baeoneura bicolor pp. uov. 

 (PI. IX, Fig. 6.) 



9. Length 1""". Elongate, liijiiily polished^ black; abdomen, legs 

 and antenna?, except the chib, brownish or honey-yellow. Wmgs hya- 

 line, narrow, strongly fringed. Club of antennne brown, 5-jointed. 

 Abdomen pointed fusiform, nnich longer than the head and thorax 

 united, il;it, or strongly depressed. 



Habitat. — Arlington, Va. 



Type in Coll. Ashmead. 



A single specimen, taken by beating. 



IDRIS Forster. 



Hym. Stud., ii, p. 102 (1856). 



(Type /. flavicornis Forst. ) 



Head transverse or siibquadrate, the cheeks and occiput delicately 

 margiued; ocelli 3, in a triangle, the lateral not touching the border of 

 the eye; eyes large, oval, pubescent. 



Antennae inserted close to the mouth, 12-jointed in both sexes; in $ 

 clavate, the club G-jointed; in S tiliform. 



Maxillary palpi 4-jointe(l ; lal)ial palpi 3-jointed. 



Mandibles deeply bifid at apex. 



Thorax ovoid, rounded before, the prothorax slightly visible from 

 above; mesonotum a. little bi-oader than long with two distinct furrows, 

 sometimes obsolete posteriorly; scutelluin semicircular, witli a i)unctate 

 frenum; metathorax short, subemarginated. 



Front wings when folded extending to, or a little beyond, the tip of 

 the abdomen, the submarginal vein long, reaching the costa beyond the 

 middle of the wing, the marginal vein short, the postmarginal vein 

 scarcely developed or never longer than the shaft of the stigmal vein, 

 the latter rather short, oblicpie, and knobbed at ti]y; basal nervure 

 wanting. 



Abdomen oblong-oval, subpetiolated, the first and second segments 

 about equal, the third the longest segment. 



Legs very similar to Hadronotus. 



Idris laeviceps sp. nov. 



S . Length 1.50"'", Black, polished, the thorax faintly microscopically 

 punctate, sparsely pubescent. i\Lindibles rufous, the teeth and apex 

 black. Autenme and legs reddish yellow. Mesonotum with two fur- 

 rows. Wings subhyaline, fringed, the basal vein distinct, the marginal, 

 twice as long as thick, the postmarginal but slightly develoi)ed, the 

 stigmal short, terminating in a little knob. Abdomen black, polished, 

 pubescent toward the apex, the first and second segments striated. 



Habitat. — Arlington, Va. 



Type in Coll. Ashmead. 



Described from a single specimen. 



