132 THE CANADIAN ENTOMOLOGIST. 



3. Clypeus flat, much produced anteriorly, covering the mandibles ; front 

 femora swollen Tribe II., Homonotini (pars). 



Tribe I. — Planicepini. 



Nothing seems to be known positively of the habits of any species 

 belonging to this group. 



I hope, therefore, that some of our students will endeavour during the 

 present summer to ascertain the life-history of one or more of our species. 



Table of Genera. 



1. Second cubital cell longer than wide (or high) 2. 



Second cubital cell wider (or higher) than long 3. 



2. Second cubital cell receiving both recurrent nerv- 



ines ... Planiceps, Latreille. 



(Type Pompilus planiceps, Latr.) 



Second cubital cell receiving only one recurrent nervure — the first, the 



second joining the cubitus beyond the second transverse cubitus ; 



pronotum with the hind margin arcuately emarginate ; submedian 



cell in front wings longer than the median, in hind wings 



shorter Melanaporus, Ashm., g. now 



(Type Planiceps euferatis, Fox ) 



3. First and second cubital cells each receiving a recurrent nerv- 



ure Hoploneurion, Kohl. 



(Type H. apagona, Kohl.) 



Tribe II. — Homonotini. 



In this tribe the front wings have three distinct cubital ceils, while the 

 clypeus is flat or, at most, sub-convex, and produced anteriorly so as to 

 cover the mandibles. 



A single wingless genus is known, Apteropompilus, Brauns, recently 

 discovered in Africa. It has the structural characters of other genera 

 placed here, except in being without wings. I have not had a specimen 

 for examination, but structurally it seems to come very close to Pedinaspis, 

 Kohl, and I suspect it may ultimately prove to be a wingless species 

 belonging to that genus. 



Meracus, Tournier, judging alone from the description, is evidently 

 synonymous with Pedinaspis, Kohl. 



Table of Genera. 



1. Winged 2. 



Wingless. 



