80 THE CANADIAN ENTOMOLOGIST. 



or the non-produced clypeus, separate it from the Planicepince and from 

 males in the Ageniince ; while from the Notocyphince and the Ceropalince 

 it is separated by the hidden or only partly visible labrum, which is never 

 very large or free, and by other characters. 



The Aporina may be separated into two tribes : 

 Front wings with three cubital cells, the second and third each receiving 



a recurrent nervure Tribe I., Anopliini. 



Front wings with only two cubital cells, rarely with only one, the second 

 usually receiving both recurrent nervures, rarely receiving only one — 

 the first ; head lenticular, the antennte inserted only slightly above an 

 imaginary line drawn from the base of the eyes Tribe II., Aporini. 



Tribe I. — Anopliini. 

 Many new genera have been recognized in this tribe, and I have 

 restored many genera suppressed by various authorities, but I believe 

 these may all be readily separated now by the characters made use of in 

 the following table : 



Table of Genera. 

 Cubitus in hind wings originating before the transverse median nervure, 



the submedian always shorter than the median 2 . 



Cubitus in hind wings not originating before the transverse median 

 nervure, either interstitial or originating from beyond the transverse 

 median nervure. 



Cubitus in hind wings interstitial, or very nearly, with the trans- 

 verse median nervure 10. 



Cubitus in hind wings originating beyond the transverse median 



nervure 23. 



2. Metathorax posteriorly rounded, not impressed, and without a median 

 impressed line or furrow above, or the impressed line very vaguely 



defined 7. 



Metathorax posteriorly rather abruptly or obliquely truncate, impressed 

 or emarginate, or with a more or less distinct median impressed line 

 or furrow above ; anterior tarsi in $ combed. 



Pronotum shoiter than the mesonotum ; eyes extending close to 

 the mandibles; third cubital cell subquadrangular or trapezoidal, 



rarely subtriangular 3. 



Pronotum long, as long or a little longer than the mesonotum ; 

 eyes not quite extending to base of mandibles, a linear space 

 between: third cubital cell narrowed above or subtriangular; 



