132 GENERA OF HYMENOPTKRA. 



Second submaruinal cell always much longer than high, and almost equal 



in h-ngth with the first, ntrely conspicuously shorter 22. 



22.— Eyes hairy; atKlomen conical, acuminate in 9. apex armed with teeth or 

 spines ill % ; scutellum jieiierally dentate laterally; anterior coxee 

 % often armed with a spine; maxillary palpi JJjointcd. 



Ccelioxys Latr. 



Eyes not hairy 23. 



23. — Third discoidal cell contnictsd above, the recurrent nervures approximating 

 each other toward the middle of the second submarginal cell; in 

 appearance closely resembling a very &mall Epeolus. 



I'liilereinns Latr. 

 Third discoidal cell not c<mtra<^ted above, the recurrent nervures remote 



from each other 24. 



24. — Marginal cell namwiy truncate at tip. 



Ocelli in a triangle; tongue long, slender, tufted at tip (Smith's figure) ; 

 first joint of labial palpi longer than the three following combined. 



I'alliopiiiis Smith. 



Ocelli in a line or .slight curve; to' lue rather short, lanceolate, acute at 



tip; first joint of labial palpi not longer than the three following 



joints combined Scrap ter St. Farg. 



Marginal cell pointed at tip 25. 



25. — Second recurrent nervure received beyond the tip of the second submarginal 

 cell, or uniting with the third ti-ansverse cubital nervure; maxil- 

 lary palpi 2-jointed. 

 Abdomen 9 with a dense ventral scopa ; pulvillus wanting: alxlomen % 



toothed orlobed at apex Antliitlium Fabr. 



Abdomen 9 withejit ventral scopa ; pulvillus present, small in 9 - large 



in % ; aMonien % not toothed or lobed at apex Stelis Panz. 



Second recurrent nervure received by the second .submarginal cell before its 



apex 26. 



2fi. — Stigma lanceolate, well developed 27. 



Stigma short, not well developed, or obsolete 28. 



27. — Head transverse, not much extended behind the eyes ; maxillary palpi 6- 

 jointed. 

 Face thinly pubescent; posterior legs 9 with a dense scopa, posterior 



femora % short and swollen Macropls Paiiz. 



Face thickly pubescent; posterior legs 9 with a thin scopa, posterior 



femora % slender, not swollen.. I'anurgus Panz. 



Head quadrate, considerably extended behind the eyes; maxillary i)ali>i 3- 

 jointed ; third and fourth joints of labial palpi minute, subequal iu 



length lleriadeN Spin. 



28. — Marginal cell at apex reaching the costal margin of the wing; second sub- 

 marginal cell narrowed at l^ast two-thirds towards the marginal; 

 maxillary palpi 3 jointed ; fourth joint of labial palpi minute, much 



shorter than the third Clielostoma Latr. 



Marginal cell at apex niore or less distinctly separated from the costal mar- 

 gin of the wing: second submarginal cell narrowed not more than 



one-half towards the marginal 29. 



29.- -Pulvillus wanting in 9 ^ 30. 



Pulvillus present in both sexe-s 31. 



