THE CANADIAN ENTOMOLOGIST. 225 



a distinct discoidal cell, and by the abdomen, which is composed of only 

 3 visible segments, the third segment always having a groove or declivity 

 before its apex, which is filled with pits or foveolae, the margin being 

 usually dentate or serrate, rarely simple or unarmed. 



The wasps of this subfamily attack principally bees belonging to the 

 families Anthophoridce, Megachilidce, Andrenidce and Pafiurgidcp., and 

 wasps of the family Eumenidce ; they also attack those of the families 

 Pemphredonidi?, Phi/anthidce, Larridce, Sphecidce. and Scoliidce. 



Ckryaspis, Saussure, described from Africa, I do not know, nor can 

 I find out where it is described, the Zoological Record, and Dalla Torre, 

 in his catalogue, being deficient in citing the publication. Both give Soc. 

 Entom., II., 1887, p. 25. What entomological society ? 



Table of Genera. 



Head normal, not rostriform ; postscutellnm normal, the basal part 



not covered by the scutellum 2. 



Head rostriform, the frons narrowed ; postscutellnm conically pro- 

 duced, the basal part wholly covered by the scutellum. 



Postscutellar process excavated ; third joint of antennae longer 



than the fourth. , (r) Stilbum, Spinola. 



(Type Chrysis cyanura, Forster.) 

 Postscutellar process not excavated, convex ; third joint of 

 antennae usually distinctly shorter than the 



fourth (2) Pyria, Lepeletier. 



(Type Chrysis lyncea, Fabr.) 



2. Apical margin of the third dorsal abdominal segment normal, or 



without a pellucid or subcoriaceous membrane 3. 



Apical margin of the third dorsal abdominal segment abnormal, 

 composed of a pellucid or subcoriaceous mem- 

 brane (3) Spintharis, King. 



(Type S. chrysonota (King.), Dahlb.) 



3. Front wings with a complete discoidal cell 4. 



Front wings without a complete discoidal cell 8. 



4. Antenna?, legs arfd tibial spurs normal 5. 



Antennae, legs and tibial spurs abnormal. 



Apical margin of the third abdominal segment 6-dentate ; 

 antennae with the joints of the flagellum 



dilated (4) Pleurocera, Guerin. 



(Type P. viridis, Guerin.) 



