306 MANDIBULATA. HYMENOPTERA. 



whitish, with the tip black, of the male red, 2 or 4 hinder ones black at the 

 extreme apex ; 4 anterior tibiae riasty within, whitish without, the extreme tip 

 rusty-brown ; posterior black, exteriorly white in the middle ; wings more or 

 less hyaline j cellule rather irregularly 5-angular. 



Apparently scarce ; found, in June, near London. 



