June, 1903.] ASHMEAD : CLASSIFICATION OF THE PrOCTOTRYPOIDEA. 93 



27. Submarginal vein ending in a thickened stigma 2£ 



Submarginal vein not ending in a thickened stigma. 



Mesonotum with parapsidal furrows ; marginal vein very short, the post- 

 marginal vein hardly developed or shorter than the stigma. 



Idris Forster (type I. Jiavicornis FrjRSTER). 



28. Head normal, without a frontal lamina or ledge ; postmarginal vein not devel. 



oped 29 



Head abnormal, with a frontal lamina or ledge ; scutellum quadrate, the posterior 

 angles acute ; postscutellum with a large ergct spine. 



Acanthoscelio Ashmead (type A. americanus Ashm. ). 

 Scutellum and postscutellum normal, the latter not spined. 



Sparasion Jurine (type S. frontale Latr. ) . 



29. Mesonotum with parapsidal furrows 30 



Mesonotum without furrows or very rarely distinct. 



Maxillary palpi short, 3-jointed..Scello Latreille (type .S. mgnlosa L.A.TR. ). 



30. Maxillary palpi short, 3-jointed ScqWo Latteille. 



Maxillary palpi long, 5-jointed Sceliomorpha Ashmead. 



(type S. longicornis AsHM. ). 



31. Postmarginal vein always greatly lengthened, the submarginal vein complete, 



never ending in a stigma 32 



Postmarginal vein wanting or poorly developed, always shorter than the stigmal 

 vein, the submarginal vein often abbreviated and ending in a large stigma ; 

 abdomen usually long 49 



32. Basal nervure present, distinct 33 



Basal nervure wanting 42 



33. Mesonotum with parapsidal furrows 34 



Mesonotum without furrows 38 



34. Metathorax with a large semicircular enclosed space 37 



Metathorax without an enclosed space. 



Postscutellum not spined 35 



Postscutellum spined 41 



35. Marginal vein longer than the stigmal vein 36 



Marginal vein punctiform or not longer than the stigmal vein. 



Mandibles 3-dentate Caloteleia IVestwood. 



Mandibles 2-dentate A nteris Forster. 



36. Mandibles 3-dentate. 



First joint of the flagellum scarcely longer than the third, the latter excised. 



Macroteleia Wesho. 

 First joint of the flagellum much longer than the third... Baryconus Forster. 



37. Mandibles 3-dentate ; marginal vein punctiform Chromoteleia Ashmead. 



38. Postscutellum not spined 39 



Postscutellum spined 44 



39. Marginal vein long, always longer than the stigmal vein 40 



Marginal vein punctiform, or shorter than the stigmal vein. 



Mandibles 3-dentate. 



First joint of the flagellum very long Caloteleia IVestwood. 



First joint of flagellum shorter than the second Cacellus Ashm. 



