44 Ephemeridae 



Blasturus Eaton 



B. cupidus Say. Old Forge, Je, and Ithaca (Ndm, Morg) ; McLean, May-Je, Sib 

 (Ndm); Castile, Ap-May, Brad (Ndm); SI, Ap 16, 27, and Je (Ds) ; LI: 

 Wyandanch, Ap 21, Schott, and Yaphank, May 29 (Ds). 



B. nebulosus Wlk. Fish House, May 28 (Alex). 



Ephemerella Walsh 



E. comuta Morg. Ithaca (Morg). 



E. deficiens Morg. Ithaca (Morg). 



E. dorothea Ndm. Beaver Meadow Br., near Old Forge, extremely local (Ndm). 



E. excrucians Walsh. Saranac Inn (Ndm) ; Cayuga L., Je; L. George, Je (Ndm). 



E. feminina Ndm. Ithaca (Ndm) ; McLean, Jl-Aug, Sih (Ndm) ; Richfield Sps., 



May (Ndm). Apparently parthenogenetic. 

 E. lata Morg. Ithaca, Je (Morg). 

 E. rotunda Morg. Pleasant Br., Ithaca, Je (Morg), 

 E. serrata Morg. Ithaca (Morg). 

 E. simulans Wlk. Ithaca, Je (Morg). 

 E. tuberculata Morg. Fall Cr., Ithaca (Morg). 



TRICORYTHUS Eaton 

 T. allectus Ndm. Old Forge, Ithaca, Je-Jl (Ndm). 



Cloeon Leach 



C. mendax Walsh. Old Forge (Ndm). 

 C. vicinum Hagen. Old Forge (Ndm). 



Habrophlebia Eaton 

 H. vibrans Ndm. Bald Mt. Pond, near Old Forge, Jl (Ndm). 



SUBFAMILY EPHEMERINAE 



POLYMITARCYS Eaton 



p. albus Say. Fall Cr., Ithaca, Je (Morg) ; points on Susquehanna R. (Ndm) ; 

 Corning, on Chemung R., Aug (Ndm). 



Hexagenia Walsh 



H. bilineata Say. Buffalo, Jl, Bet (Ndm) ; Niagara Falls, Jl, Watson, as limhata 



Guer. (Ds) ; Cayuga L. (Ndm) ; Seneca L. (Ndm) ; Schenectady, Je (Lint) ; 



L. George, in deep water, Jl-Aug (Ndm) ; Poughkeepsie, Jl (Felt). 

 H. recurvata Morg. Pine L., near Canada L., Herkimer Co (Ndm) ; Michigan 



Hollow (Ndm) ; McLean (Ndm). 

 H. variabilis Eaton. Little Clear Cr., near Saranac Inn, Je-Aug (Ndm) ; Ithaca, 



May (Morg) ; ? Coxsackie, Je (Felt). 



Ephemera Linnaeus 



E. guttulata Pict. Sacandaga Pk., Alex (Ndm) ; Fall Cr., above McLean (Ndm) ; 

 Ft. Montgomery, May 31, 1903 (Ds). 



