296 PROCEEDINGS OF THE ACADEaiY OF -. [1894. 



name Eusapyga has been proposed bj Cresson, but these form only 

 a subgenus at the most. 



POMPILIDJE. 



This is a distinct family characterized by the very long posterior 

 legs, long antenujB, and by the first and second ventral segments 

 being not widely separated. The species possess no pygidium. I 

 would separate the fiimily into three tribes, placing the Ceropalini 

 first, as I consider the genus Ceropales as being closest to the Sapy- 

 gidas. 



Sting sheath of 9 projecting, prominent ; eyes slightly emarginate 

 within, near the top; labrum large, projecting ; autennpe never 



curled after death, situated well above the clypeus 



'. CEROPALINI. 



Sting sheath of 9 not projecting ; eyes entire. 



First discoidal cell not longer than first submarginal ; submedian 

 cell of anterior wings longer than the median on the externo- 

 median nervure ; second discoidal cell not half the size of the 

 third; labrum exserted, longer than the clypeus; abdomen com- 

 pressed apically NOTOCYPHlNI. 



First discoidal cell longer than lirst submarginal ; labrum not 

 exserted ; length of inedian cell of anterior wings variable; 

 second discoidal cell at least half the size of the third; abdomen 

 rarely compressed POMPILINI. 



Tribe I.— CEROPALINI. 



This tribe contains but a single genus, Ceropales, having the char- 

 acters given above. The species are always more or less ornamented 

 with yellow^, some being extremely handsome. 



Tribe II.— NOTOCYPHlNI. 



The genus NotQcyphus constitutes this tribe, which differs chiefly 

 from the Ceropalini by the non-exserted sting sheath. 



Tribe III.— POMPILINI. 



The Pompilini contains the tj^pical forms of the family and is, by 

 far, the largest tribe. Pepsis, which Saussure considers as a tribe, 

 should, in my opinion, be placed in the tribe Pompilini, as its charac- 

 ters will not warrant a tribal distinction. Parapompllus Cress, (non 

 Sm.), Planiceps Latr., and Ajyorus Spin., seem to be merely groups 

 of the genus Pompilus, as has been pointed out by Kohl.'' Epipom- 



^ Verb, zool.-bot. Gesell., Wien, XXXIV, pp. 33-58. 



