THE CANADIAN ENTOMOLOGIST. 19 



o 



Clypeus closely punctured. 



Dorsulum with pale pubescence. 

 ■Abdomen greenish, purplish or bluish. 



First recurrent nervure received by the second submarginal 

 cell before the middle ; anal fimbria bright 



• brown xa?ithostig?na. 



First recurrent nervure received by the second submarginal 

 cell beyond the middle ; anal fimbria sooty. 



Abdomen dull ; stigma pale Candida. 



Abdomen rather shining; stigma dark. . subcandida. 



Abdomen black. 



First recurrent nervure received by the second submarginal 

 cell before the middle ; abdomen thinly 



subfasciate decussata. 



First recurrent nervure received by the second submarginal 



cell beyond the middle; abdomen not i2,%c\zX^ . decussatula. 



Abdomen fasciate ; dorsulum dull, apparently impunctate ; 



clypeus not hidden by pubescence; abdomen 



greenish subdistans. 



26. Enclosure not rugose. 



Clypeus dull impunctate plana. 



Clypeus dullish, dense, with indistinct punctures auricoma. 



Clypeus rather closely punctured; but not densely scurra. 



27. Process of labrum finger-shaped ; scopa compact. . . . Macguillivrayi. 

 Process emarginate, but not deeply. 



Posterior legs pale nubilipetinis. 



Posterior legs dark ; abdomen fasciate ; anal fimbria dark 



brown W-scripta. 



Andrena. 

 Males. 



Cheeks produced into a rounded angle i. 



Cheeks regularly rounded, not angulate 10. 



1. The angle opposite or below the middle of the eye .2. 



The angle above the middle of the eye. 7. 



2. Angle opposite the middle of the eye 3. 



Angle below the middle of the eye  .-. 6. 



3. Joint 3 shorter than 4 hemikuca. 



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



Joint 3 about equal to 4 + 5 5. 



