THE CANADIAN ENTOMOLOGIST. 227 



7. Apical margin of third abdominal segment undulate, notched or 



angulate (14) Gonochrysis, Liechtenstein. 



(Type Chrysis albipennis, Klug.) 

 Apical margin of third abdominal segment 



entire (15) Olochrysis, Lichtenstein. 



(Type Chrysis aerata, Dahlb.) 



8. Body narrow, slender (16) Chrysogona, Forster. 



(Type C. gracillima, Forster. 



Subfamily III. — Hedychrinae. 



This group is closely allied to the Elampenae, where Aaron placed it, 

 and probably the slight difference in venation used by Mocsary will not 

 always prove satisfactory. The characters of the claws given by Dahlbom 

 are entirely worthless to separate these wasps from the Elampince. 



The third abdominal segment is always normal, without a groove or 

 declivity filled with a submarginal series of pits or foveolee, and this 

 character separates the group from the Chrysidince. ; while from the 

 ElamplncB it is usually easily distinguished by the venation of the front 

 wings, the first and second discoidal cells being usually distinct, complete. 



The wasps of this subfamily are most frequently bred from the nests 

 of the Pemphredonidie and Trypoxylidtz, although they attack other wasps, 

 Philaiithidce, Stizidce, and Sphecidce. A few are also recorded from bees, 

 Megachilidce, Andrenidce, Panurgidce, etc. 



Table of Genera. 



1. Submedian cell not longer than the median, the transverse median 



nervure interstitial with the basal nervure 2. 



Submedian ceil longer than the median, the transverse median nervure 

 originating beyond the basal nervure. 



Claws with 4 or more teeth beneath; first and second discoidal 

 cells distinct or indicated by fuscous 



nervures (1) Holopyga, Dahlbom. 



(Type H. amcenula, Dahlb.) 



2. Claws with one small tooth beneath, at or near the middle ; abdomen 



with the third segment at apex entire or broadly 



sinuate (2) Hedychridium, Abeilie. 



(Type Chrysis ardens (Latreille), Coquebert.) 



