I 



I 



THE CANADIAN ENTOMOLOGIST. 241 



2. Second cubital cell never petiolate, receiving both recurrent nervures, 

 or the first and second submarginal cells each receive a recurrent 



nervure ; pronotum long Subfamily II., Lyrodinse. 



Second cubital cell petiolate or triangular, or more rarely entirely 

 wanting ; pronotum most frequently short, transverse. 



Front wings with one or two cubital cells, or with none ; pygidial 



area wanting Subfamily III., Nitelinaj. 



Front wings with two or three cubital cells ; pygidial area present ; 

 marginal cell most frequently, but not always, truncate, with an 



appendage Subfamily IV., Pisoninse. 



Subfamily I. — Larrinre. 

 The aborted hind ocelli, represented at the most by cicatrices, readily 

 separate this subfamily from the others. 



The table of genera, which follows, is almost a literal translation 

 from Dr. Franz Kohl. 



Table of Genera. 

 Anal lobe of hind wings very large and extending to or beyond the 

 apex of the submedian cell ; third cubital cell, along the radius, 

 shorter than along the cubitus ; mandibles most frequently emaroi- 



nate beneath 2. 



Anal lobe of liind wings much shorter, not extending to the apex of the 

 submedian cell ; third cubital cell, along the radius, as long or longer 

 than along the cubitus; second cubital cell triangular or petiolate, 

 receiving both recurrent nervures, or the second recurrent is inter- 

 stitial ; abdomen with the segments depressed at apex as in Cerceris; 

 pygidial area sharply defined in both sexes Palarus, Latreille. 



2. Eyes in ^ «t'/' converging and meeting above as \r\ A status ; first and 



second dorsal abdominal segments with an acute margin laterally ; 

 ventral segments 6-7 free, 2-5 exhibiting in part prominent trans, 

 verse swellings ; marginal cell short, very broadly truncate ; third 

 transverse cubitus uniting with radius a little before the truncature ; 

 tarsal comb developed. J. ($ unknown.) .. Homogambrus, Kohl. 



3. First abdominal segment not strikingly elongate 4. 



First abdominal segment elongate, longer than the widest part, narrower 



towards base, imperfectly petioliform. 



Face without a trace of swelling or longitudinal fold along the 

 inner eye margin, usually with a rounded central swelling on 

 the upper part of the vertex ; pronotum lying deeply beneath 



