SPHEGID^. 



(35) 28. 



(32) 29. 

 (31) 30. 

 (30) 31. 

 (29) 32. 

 (34) 33. 



(33) 34. 



(28) 35. 



(37) 36. 



(36) 37. 



(1) 38. 



(40) 39. 



(39) 40. 



(42) 41. 



(41) 42. 



Head and thorax with long hairs . PEJipnuEDOX. 



Head and thorax destitate of long 

 hairs. 



Labrum notched at the apex, posterior 

 tibiaj denticulate .... Diodoxtus. 



Labrum pointed at the apex, posterior 

 tibia} smooth Pass.\l<kcus. 



Wings with three submarginal cells. 



Anterior and posterior basal trans- 

 verse nervures of anterior wings 

 forming a well-defined angle at their 

 junctnre ; posterior calcaria robust Mimesa. 



Anterior and posterior basal trans- 

 verse nervures almost in one direc- 

 tion ; posterior calcaria very fine . Psen. 



Abdomen sessile, or, if petiolated, 

 petiole formed by the narrowing of 

 the base of both dorsal and ventral 

 plates of the segment. 



Abdomen not largely and deeply 

 punctured, or, if so, with the propo- 

 deum spinoBe. 



Second submarginal cell petiolated. 



Pronotum elongate .... Didineis. 



Pronotum verj' short .... Nysson. 



Second snbmarginalcell not petiolated. 



Both recurrent nervures received in 

 the second submarginal cell . . Gorytes. 



First recurrent nervure received in the 

 first submarginal cell, second in the 

 third SIellinus. 



Abdomen largely and deeply punc- 

 tured; propodenm simple. 



Second submarginal cell petiolated . Cercekis. 



Second submarginal cell not petiolated Puilaniuus. 



Anterior wings with only one submar- 

 ginal cell. 



Metanotum with a curved spine at the 



base OxTBELUS. 



Metanotum simple. 



Eyes hairy ...... Extomogxatuus. 



Eyes glabrous Cbabro. 



ASTATUS, Latr. 



A very distinct genus, which can only bo confused with 

 Tachyfes, but the eyes of the male are very large, and meet 

 on the vertex, and the central ocellus is much larger than 

 the others. Tlic mandibles are simple in both sexes j the 



