THE CANADIAN ENTOMOLOGIST. 247 



The group is very closely allied to the Miscophhice, the only reliable 

 character to distinguish it being the distinct pygidial area, although, as a 

 rule, the tibial spurs and the pronotum are shorter than in the latter 

 group. 



Thirteen genera have been recognized, distinguished as follows : 



Table of Genera. 



Marginal cell at apex truncate or rounded, with an appendage 3. 



Marginal cell lanceolate, not truncate at apex, or at most narrowly 

 rounded, without an appendage. 



Front wings with three cubital cells 2. 



Front wings with two cubital cells, each receiving a recurrent nervure. 

 Transverse median nervure interstitial with the basal 



nervure Taranga, Kirby. 



Transverse median nervure not interstitai joining the median vein 

 before the origin of the basal nervure Parapison, Smith. 



2. Transverse median not interstitial joining the median vein before the 

 origin of the basal nervure. 



Second cubital cell larger, more briefly petiolate, receiving 

 both recurrent nervures, or the first recurrent nervure is inter- 

 stitial with the first transverse cubitus ; mandibles excised 

 beneath; eyes only slightly emarginate within. . . Pisonopsis, Fox. 

 Second cubital cell small, longly petiolate, receiving one or both 

 recurrent nervures, or the second is interstitial with the second 

 transverse cubitus : mandibles not excised beneath. 



Second cubital cell receiving both recurrent nervures, or the 

 second recurrent is interstitial with the second transverse 



cubitus Pison, Spinola. 



Second cubital cell receiving only one recurrent nervure 

 — the second, the first recurrent nervure received by 

 the first cubital cell a little before the first transverse 



cubitus: Pisonitus, Shuckard. 



Transverse median nervure interstitial, the second cubital cell triangu- 

 lar, receiving the second recurrent nervure near its apex, the first 

 recurrent nervure interstitial with the first transverse cubitus ; cubitus 

 in hind wings originating beyond the transverse median nervure ; 

 nind femora much thickened towards apex, especially in the $ , 

 roughened and serrated on outer face Bothynostethus, Kohl. 



