194 THE CANADIAN ENTOMOLOGIST, 



4. Abdomen with black pubescence solidula. 



Abdomen with pale pubescence. 



Fasciae absent decussata. 



5. Pubescence on face and thorax partly black Harvey i. 



6. Pubescence white vibiirnella. 



Pubescence ochreous vibiirnella var 



7. Mandibles armed with a tooth at base 8. 



Mandibles not armed with a tooth at base 9. 



8. Pubescence of abdomen pale and black ; joint 3 much longer than 4, 



but not as long as 4 + 5 advariatis. 



Pubescence of abdomen pale. 



Pubescence fulvous ; joint 3 = 4 or nearly asvii. 



Pubescence white ; joint 3 much longer than 4, but not as long 

 as 4 + 5 perarmata. 



9. Abdomen black. 



Pubescence white sub aiistr alls. 



Pubescence ochreous to fulvous subaustralis var. 



10. Joint 3 about ~ to 4 11. 



Joint 3 distinctly longer than 4, but shorter than 4 + 5 13. 



1 1. First recurrent nervure received by the second submarginal cell before 



the middle 12. 



First recurrent nervure received by the second submarginal cell beyond 

 the middle ; abdomen blue Candida. 



12. Dorsulum punctured (species not determined) 



Dorsulum impunctate angustifovea. 



1 3. First recurrent nervure received by the second submarginal cell 



before the middle 14. 



First recurrent nervure received by the second submarginal cell 

 in or beyond the middle 17. 



14. Abdomen punctured 15. 



Abdomen impunctured 16. 



1 5. Metathorax smooth • W-scripta. 



16. Enclosure granular. 



Pubescence dense ; antennre pale in front Illinoiensis. 



Pubescence thin ; antennae black in front melanochroa. 



Enclosure indistinctly striated. 



Stigma dark brown ; pubescence of dorsulum fulvous . . medionitens. 

 Stigma pale; pubescence of dorsulum pale ochreous. . .microsotfia. 



