THE CANADIAN ENTOMOLOGIST. 279 



flagellum not twice as long as broad ; metathoracic carinfe and 

 spines prominent ; petiole smooth, polished ; second segment of 

 abdomen evenly punctured ; abdomen red ;' apex of 4th and base 

 of 5th segments black, rest of apex white. Length 

 6.5 mm LuzERNENis, n. sp. 



17. Thorax entirely rufous 22. 



Thorax more or less black 18. 



18. Scutellum while ; pleura, propodeum and legs rufous; white annulus 



on antennte ig. 



Scutellum black or rufous 21. 



19. Antennae as long as body, or longer 20, 



Anlennse considerably shorter than body ; anterior orbital line white, 



interrupted medially ; metathoracic carinas and spines inconspicuous; 

 petiole broad apically, roughened, very finely subaciculate ; 

 abdomen moderately broadly oval, rufous ; fifth segment fuscous, 

 apex white signatus, Provancher. 



20. Antennae longer than the body ; anterior orbital broad, not inter- 



rupted, also a fine posterior orbital line present; a bright white stripe 

 on anterior margin of prothorax ; propodeum, legs, pleura, stains 

 on mesonotum and abdomen, except base of petiole, rufous ; 

 metathoracic carinse and sphies sowewhat more strongly marked 

 than in signatus ; petiole not so broad apically, and abdomen more 

 narrow and longer than in that species ; petiole sub-polished at 



apex, laterally carinate ornatus, Provancher. 



Antennae as long as body ; prothorax, mesonotum and abdomen 

 beyond second segment black, remainder of insect rufous ; broad 

 orbital lines, face except transverse spot above clypeus, clypeus 

 except central apical spot, scape beneath, collar, humeral line, line 

 beneath each wing, stripes on mesonotum and mesopleura, two 

 spots on metathorax above hind coxse, broad apical margin on all 

 abdominal segments, more or less of anterior coxse and 

 trochanters, white, apex of femora, apical third of tibice posteriorly 

 and tarsi of hind legs black ; metathorax rugose ; superior area 

 subpolished ; petiole very broad, finely and rather sparsely 

 punctured *Bak:eri, Davis. 



21. Antennse without white annulus. One specimen of consors that I 



have seen has the propodeum slightly 



rufous CONSORS, Cresson (pars.) 



