tkE CANADIAN ENTOMOLOGIST. 251 



Anal cell in hind wings shorter than the submedian, petiolate or 



subpetiolate. S Periclista, Konow. 



Anal cell in hind wings fully as long as the sub- 

 median. ^ Isodyctium, Ashm. 



7. Hind wings without a closed discal cell 9. 



Hind wings with a closed discal cell. 



Claws simple, or with a very minute, scarcely perceptible tooth 



within 8. 



Claws cleft, or with a large tooth within. 



Anal cell in hind wings shorter than the submedian cell. 

 Transverse median nervure in hind wings received by 

 the discal cell at or somewhat beyotid the middle ; 

 sheaths of ovipositor equally thickened and more 

 or less obliquely pointed at apex ; third joint of 

 antennae almost as long as joints 4-5 united. 



9 Periclista, Konow. 



Transverse median nervure in hind wings received by 

 the discal cell before the middle ; sheaths of oviposi- 

 tor produced at apex into a thorn-like tip. 



$ Ardis, Konow. 



Anal cell in hind wings as long as the submedian. 



? Isodyctium, Ashm. 



S. Third joint of antennae longer than the fourth ; sheaths of ovipositor 



at tips obtuse - Pareophora, Konow. 



Third joint of antennae a little shorter than the fourth, never longer ; 

 sheaths of ovipositor at tips rounded ; clypeus anteriorly 

 truncate Rhadinoceraea, Konow. 



9. Anal cell in hind wings as long as the submedian. 



% Isodyctium, Ashm. 



Anal cell in hind wings shorter than the submedian. 



^ Ardis, Konow. 



10. Praesternum of mesosternum not at all separated by a suture. ... 11. 

 Praesternum of mososternum separated by a distinct suture ; clypeus 

 anteriorly truncate ; hind wings with one discal cell, the anal 

 cell shorter than the submedian; claws long, 



simple Tomostethus, Thomson. 



T I. Hind wings with one discal cell 15. 



Hind wings without a discal ceJl. 



