March, 1903.] ASHMEAD : CLASSIFICATION OF PrOCTOTRYPOIDEA. 29 



Metathorax at base armed with a curved spine or thorn ; front wings with 



the basal nervure present HoplopHa As/imead* 



(type H. ptihhriptunis Ashm.). 



4. Front wings with a distinct basal nervure 5 



Front wings without a distinct basal nervure 6 



5. Al)domen conically pointed, the second segment without sulci at base, overlap- 



ping the apex of the petiole ; marginal vein distinct. 



Spilomicrus Weshvood (type S. stigtnalicnlis Westw. ). 



Abdomen rounded or truncate at apex, the second segment with sulci at base; 



marginal vein very short Hemilexis Forsier (partim). 



6. Abdomen rounded or truncate at apex ; front wings with the costal cell open ; 



stigmal vein often with a backward directed branch Hemilexis F'drsler 



(type Diapria plotyptera Hal.) 

 Abdomen conically pointed ; costal cell closed ; stigmal vein simple. 



Paramesius //d'.r/-wc(/ (type /'. ;7(/f/c.f Westw.J. 



7. Front wings without a basal nervure ; stigmal vein longer than the marginal. 



Hemilexodes Ashmead (type II. Jloridamis Ashm.). 



8. Submarginal vein attaining the costa 9 



Submarginal vein not attaining the costa, ending in a stigma or knob 12 



9. Front wings with a basal nervure 10 



Front wings without a basal nervure 11 



10. Mesonotum with two furrows ; antenn?e ending in a 5-jointed club. 



Idiotypa F'drster (type Psi/us maritiiinis Hal. ). 

 Mesonotum without furrows ; antenna; ending in a 3-jointed clul) ; face keeled 



at the sides Tropidopsis Ashmead 



(type 7". clavata Ashm.). 



11. Mesonotum with two furrows. 



Antennre ending in a 5-jointed club Synacra Forster 



(type Diapria hrachialis Nees). 

 Antenna ending in a 4-jointed club..QIyptonota Forster (type unknown). 



12. Mesonotum with two furrows. 



Stigma with a stigmal vein ; abdomen with three sulca at base. 



Aneurhynchus IVeslxo. [lype A. ga/est/or;/n's Westw.). 

 Stigma without a stigmal vein ; abdomen with only one sulcus at base. 



Labolips Ilaliday (type /,. i)niup(a IIal. ). 



13. Antennre less than 15-jointed 14 



Antenncc i5-jointed. 



Mesonotum with two furrows Polypeza Forster 



14. AntenniV! 13-jointed 15 



Antennse 14-jointed 19 



15. Mesonotum without furrows. 

 Mesonotum with two furrows. 



Metathorax not armed at base with a curved spine 16 



Metathorax armed at base with a curved spine or thorn ; tlagellar joints verj' 

 long, cylindrical Hoplopria Ashineaa 



*To this genus belong the species described by Mr. P. Cameron, in Biol. Centr.- 

 Amer., I, 18S8, under the genus Paramesius Westw. 



