—43— 



Antenncc simple, not verticillate pilose. 



Wings with a smoky submarginal blotch G. (i) Decatoma, Spinola. 



Win^Js without a smoky submarginal blotch G. (2 ) Eudecatoma, n. g. 



2. Metathorax much lengthened 4 



JMetatliorax not lengthened. 



Mesothorax umbilicate punctate 3 



Mesothorax not umbilicate punctate. 



*MarCTinal vein not longer than the sli niial ; abdomen sub-globose; funicle joints 

 with long hairs, but not pedunculated G. (3) Systole, Walker. 



='=*AIar'.nnal vein one and a half times as long as the stigmal 



"^ G. (5) Xanthosoma, n. g. 



***Marginal vein three times as lone.' as the stiL;mal ; abdomen long-oval, petiole 

 short; funicle joints -i.nple, without long hairs . . G. (6) Rileya, Ashmead. 



3. Postmarginal vein distinctly longer than the stigmal. 



I\.!arginal vein longer tlian the stigmal. 



Scape equal in length to the fir.-t funicle joint G. (7) Bephrata, Cameron. 



Scape much longer than the first funicle joint. 



Funicle joints simple, not pedunculate veriicellate-pilose. 



Parapsidal furrows obliterated p.osteriorly ; abdomen ovate, petiole short, 



ihick G. (8) Decatomidea, n. g. 



Funicle joints pedunculate and verticillate-piloje. 



Posterior tibice with two spurs; parapsidal grooves, complete, di^tinct. 



Abdomen trigonate, sub-compre,.sed G. (9) Eurytoma, Illiger. 



Abdomen ovate, sub-compressed G. (10) Eurytomocharis, n. g. 



Posterior tibia: with one spur G. (ii) Phylloxeroxenus, n. g. 



Postmarginal vein twice as long as the stigmal G. (13) Evoxysoma, n. g. 



Marginal vein not longer than the stigmal. 



Postmarginal vein hardly as long as the stigmal; abdomen ovate, petiole shorter 



than posterior coxa; ; funicle joints oval, with long hairs 



G. (12) Bruchophagus, n. g. 



Postmarginal vein longer than the stigmal ; abdomen subglobose, petiole longer 



than posterior coxa^ funicle joints ot aiitennce oval, pilose 



G. (4) Systolodes, n. g. 



4. Petiole of abdomen very short ° 



Petiole of abdomen long. 



Marginal vein not as long as the stigmal 5 



Marginal vein longer than the stigmal. 



Mesothorax, unless otherwise stated, more or less umbilicate punctate. 



Postmarginal vein distinctly longer than the stigmal ; funicle joints pedunculate 



and verticillate-pilose. 



Pedicel not longer than the first funicle joint. 



Metathorax sloping, rounded behind G. (14) Isosoma, Walker. 



Metathorax quadrate, abruptly truncate behind 



G. (15) Isosomorhpa, n. g. 



Pedicel longer than the first funicle joint ; mesothorax smooth, polished 



G. (16) Isosomocharis, n. g. 



Postmarginal vein longer than the stigmal ; antennas slender, filiTorm, pubescent: 

 abdomen clavate, slightly compressed, a little longer than the thorax ex- 

 clusive of the petiole G. (19) Aiolomorphus, Walker. 



5. Funicle joints not pedunculated, long, cylindric, about five times a', long as wide, 



pilose ; mesothorax umbilicate punctate G. (17) Isosomodes, n. g. 



6. Postmarginal vein shorter than the stitjmal, one-third the length of the marginal ; 



antenme verticillate-pilose ; head and prothoiax shining anrl >omewhat smooth . . . 



G. (18) Philachyra, Haliday. 



