MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 347 



Stiginal Jiiicl postniarginal veins runcli shortened, the stigmal given off at a very 

 oblique angle; antennas clavate, monilifonn, the first fuuiclar joint 

 only a little longer than thick and much smaller thau the pedicel. 



AcLiSTA Forster. 



Stigmal vein very short, with an uncus, marginal vein as long as the basal 

 nervure, mandibles conical, not rostriform; scape at tip produced 

 into a little spine; palpi 4-joiuted Synacra Forster. 



6. Mesonotnm with 2 furrows; marginal cell long, open; auteuujo clavate-monili- 



form, the first funiclar joint slightly longer thau the jiedicel. 



Psii.OMMA Forst. 

 Mesonotnm without furrows Ismarus Hal. 



7. Ocelli wanting ; Avingless Anommatium Forster. 



Ocelli present. 



Marginal cell distinct, closed; antenna) filiform or subclavate. 



Anectata Forster. 

 Marginal cell scarcely discernible or wanting; antenna) subclavate-mouiliform, 

 pubescent, the first funiclar joint smaller thau the pedicel. 



Pantolyta Forst. 



males. 



Petiole of abdomen not, or scarcely, longer thau the metathorax 2 



Petiole of abdomen almost twice as Jong as the metathorax. 



Marginal vein twice as long as the marginal cell Macroiiynnis Forst. 



Marginal vein much larger tluiii the stigmal and about as long as the marginal 

 cell. 

 Second abdominal segment compressed laterally; petiole smooth above. 

 Antenn;e filiform, the scape as long as the first funiclar joint, the latter 



strongly emarginated at base Leptorhaptus FiJrst. 



Autenn.'e filiform, pubescent, the scape not as long as the first funiclar 



joint, the latter slightly emarginated at base Miota Fiirst. 



Second abdominal segment not compressed laterally, the abdomen becoming 

 more flattened behind the segment; the petiole aljove more or less 

 furrowed; scape longer thau the first funiclar joint. 



CiXETUS Jurine. 



Marginal vein as long as, or a little longer than, the stigmal, but much shorter 



than the marginal cell ; mandibles falcate Xexotoma Fiirst. 



2. Middle carina of metathorax not divided 3 



Middle carina of metathorax divided or absent. 



Marginal vein scarcely longer than the stigmal, marginal cell long, postmargiual 

 vein greatly lengthened; antenna', filiform, all the joints long, cylin- 

 dric, the first fuuiclar joint emarginate at base Belyta .Jurine 



3. Postscutellum with a strong spine Ox ylabis Forster. 



Postscutellum Avithout a spine. 



Eyes uot hairy 4 



Eyes hairy. 

 Marginal cell closed. 



Scape with the apical margin on one side produced into a tooth. 



ACROPIESTA Fiirst. 

 Scape not produced on one side into a tooth. 



Marginal vein not or scarcely longer than the first abscissa of radius, the 

 latter oblique. 

 Last ventral segment very straight and punctured. 



Anterior tibite normal Anectata Forst. 



Anterior tibiie bent, with a median spined process.. ..Zygota Forst. 

 Last ventral segment somewhat bent, not punctured.. Pantoclis Fiirst. 



