THE CANADIAN ENTOMOLOGIST 247 



Subfamily: Ephemerinae 1. Hexagenia bilineata^dLy. 



2. Ephemera s itti it la ns Walker. 



Subfamily: Heptagenina^ 1. Heptagenia flavescensyXaXsh.. 



2. " httea sp. no v. 



3. " fusca sp. nov. 



4. " tri punctata Banks 



5. " riibromaculata sp. 



nov. 

 G. • " Iiiridipennis Burm. 



7. " canadensis \\"alker 



8. " frontalis Banks. 



9. " sp. ? (nymphs only). 

 ' 10. Ecdyurus maculipennis Walsh. 



11. " lucidipennis sp. nov. 



12. " grandis sp. nov. 



Subfamily: Baetina; 1. Baetisca ohesaWoXsh. 



2. Leptophlehia, sp. ? (nymph only). 



3 . Blasturns cnpidus Say. 



4. Blasturns nebulosus Say. 



5. Choroterpes {?) hasalis Banks. 

 Q.^Ephemerella Intiilenta sp. nov. 



7. Ephemerella lineata sp. nov. 



8. Ephemerella hicolor sp. nov. 



9. Drunella sp. ? (nymph only). 



10. Cams dimimita Walker. 



11. Tricorythus allectiis Needham. 



12. Chirotenetes albomanicatiis Need- 



ham. 



13. S i phi tcr us flexus sp. nov. 



14. Baetis propinquus Walsh. 



15. Chvon dubium Walsh. 



16. Callibcetis ferriigineus Walsh. 



Descriptions and Notes. 



Genus Heptagenia 



Special attention was given to this genus on account of its 

 abundance and the comparatively large number of species. The 



