216 ME. W. H. ASHMEAD ON THE PAEASITIC HrMENOPTEEA 



Tribe iii. Scelioniki. 



As there are several species described in new genera, indicated 

 in my ' Monograph of North-American Proctotrjpidse,' I give 

 here a copy o£ the tables for their recognition. 



Tahle of Oenera. 



Postmarginal vein wanting or never greatly deve- 

 loped, always shorter than the stigmal vein, 

 the sub marginal vein often never reaching the 

 costa and terminating in a large stigma ; the 



abdomen long, fusiform 4. 



Postmarginal vein always greatly lengthened, the 

 submarginal never terminating in a stigma. 



Basal vein wanting 3. 



Basal vein present. 



First abdominal segment without a horn at 



base 2. 



First abdominal segment with a horn at base. 



Marginal vein short ; abdomen long, pointed 



fusiform, the first segment narrow, 



petioliform, the second and third nearly 



equal Calotehia, Westw. 



Marginal vein long ; abdomen long, linear 

 or subfusiform, the first segment quad- 

 rate or subquadrate Baryconus, Forster. 



2. Abdomen long, pointed fusiform or linear, seg- 

 ments 2, 3, and 4 nearly equal. 

 Mesonotum with two furrows. 

 Metascutellum without a spine. 



Metanotum with no enclosed space at base. 

 Marginal vein about twice the length of 

 the stigmal. 



Mandibles 3-dentate Macroteleia, Westw. 



Mandibles 2-dentate Calliscelio, Ashm. 



Metanotum with a large, semicircular en- 

 closed space at base. 



Marginal vein punctiform Chromoteleia, Ashm. 



Abdomen oblong-oval or fusiform, but not espe- 

 cially lengthened. 

 Metascutellum spined. 



Mesonotum with two furrows. 



Mandibles 2-dentate ; abdominal segments 

 1 and 2 equal in length, the third 

 longer Opisthacantha, Ashm» 



