386 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



Basal ueivure present. 

 Abdomen conically pointed, tins second segment without sulci at base, over- 

 lapping tlio ajx'x of petiole; marginal nervure distinct; I'ostal cell 



closed Si'iLo.MiCKis Westw. 



Abdomen rounded or truncate at apex, the second seguient with sulci at 

 base; marginal nervure very short; costal cell usually open. 



Hkmilkx is Forster 



2. Basal ncrxure wanting; stigmal nervure Iong<n- than tlu> marginal. 



Hi:milkxoi)ks Ashni., gen. nov. 



3. Submarginal nervure not attaining the costa, ending in a stigma 5 



Submarginal nervure attaining the costa. 



Wings Avith a basal nervure .• 4 



Wings without a basal nervure. 

 Mesonotum with 2 furrows. 



Clul) 5-jointed Svnac'Ha Forster 



Club 4- jointed (Slyptoxota Forster 



4. Mesonotum without furrows. 



Club abrupt, 3-jointcd; face keeled at the sides. .Tuopidopsis Ashm., gen. nov. 

 Musonotum with 2 furrows. 



Club 5-joiuted Idiotvpa Forster 



5. Mesonotum witli 2 furrows. 



Stigma with a stigmal vein; abdoTinni witli 'A sulci at base. 



AxKUiiHYXCiius Westw. 

 Stigma witliout a stigmal vtun ; abdomen with a. single sulcus at base. 



Labolips Haliday 



MALES. 



Antenn;e 14-jointed 3 



Antenna? 13- jointed. 



Mesonotum without furrows 2 



Mesont)tum with furrows. 



IVIctathorax armed at base with a curved spine. 



Flagellar joints very Itmg, cylindrical Hoi'LOPHIA, Ashm., gen. nov. 



Metathorax not armed at base with a curved spine. 

 First Hagellar joint not half as long as the second. 



Basal A'ein absent; costal cell closed Pauamesii'S Westw. 



First tlagellnr joint as long or longer than the second. 

 Mesonotum not longer than wide. 



Costal cell open; basal nervure present. 



Stigmal vein much longer than the marginal Hkmilkxis Ftirster. 



Mesonotum longer than wide. 



Costal cell closed; basal nervure present. 



Abdomen with sulci at base Idiotvpa Forster. 



Abdomen without sulci at base Spilomicp.us Westw. 



2. Basal nervure present; costal cell closed. 



Base of second segment overlapping the apex of ])ctiole (Spii.omickus.) 



Basal nervure absent; costal cell open or at least open at base. 



Flagellar joints long, cylindrical, pilose, the first longer than the second. 



Hemii.exudks Ashm., gen. nov. 



3. Submarginal vein not reaching tlie costa, ending in a stigma 4 



Submarginal vein reaching the costa. 



Basal nervure wanting. 



Mesonotum \\ itli 2 furrows. 



Eyes hairy Synaciia Fiirsf er. 



Mesonotum witliout furrows. 



Flagellar joints elliptic-oval 'f Kopinopsis Ashm., gen. nov. 



4. Stigma with a stigmal vein Aneukuynciius Westw. 



