Ephemeridae 43 



CaenIS Stephens 



C. diminuta Wlk. Thousand I. Pk. (M. R. Miller) ; Little Clear Pond, near Saranac 

 Inn, Jl (Ndm);, Saranac Inn, Jl (Ndm) ; Old Forge, Jl-Aug (Ndm) ; Fall 

 Cr., Ithaca (Morg) ; McLean, Je-Aug, Sib (Ndm) ; L. George, Aug (Ndm). 



C. hilaris Say. Thousand I. Pk. (M. R. Miller) ; Ithaca (Ndm, Morg), abundant. 



C. lacustris Ndm. Oneida L., F, C. Baker (Ndm). 



SiPHLONURUS Eaton 



S. alternatus Say. Saranac Inn, Little Clear Pond, and Old Forge (Ndm) ; Bald 

 Mt. Pond (Ndm) ; First L., Je (Ndm) ; Sacandaga Pk., Je (Alex) ; Ithaca, 

 nymphs common, Ap-Je (Morg) ; Slaterville, Je (Ndm) ; Trenton Falls 

 (Wlk). 



S. aridus Say. NY (Bks). 



S. femoratus Say. "NY" (Bks). 



S. minis Eaton. Sacandaga Pk. and Fish House, May-Je (Alex). 



S. typicus Eaton. Johnstown, Je (Alex). 



SiPHLOPLECTON Clemens 

 S. flexus Clem. Shore of L. Ontario near N. Fair Haven, Jl 19 (Ndm). 



Leptophlebia Westwood 



L. betteni Ndm. Hamburg, Jl (Bet) ; Howard, Jl 5, Cy (Ndm) ; Ithaca (Ndm) ; 



McLean, Jl (Emily R. Morrison), Aug, Sib. 

 L. mollis Eaton. Old Forge (Ndm) ; Fall Cr., Ithaca (Morg) ; L. George, Je 



(Ndm). 

 L. praepedita Eaton. Fall Cr., Ithaca, May-Je (Morg). 



SIPHLONISCA Needham 



S. aerodromia Ndm. Sacandaga Pk., Alex (Ndm) ; Northampton, May (Felt) ; 

 Johnstown, Alex (Ndm). 



Callibaetis Eaton 



C. americana Bks. Van Cort. Pk., Je 2 (Ds) ; SI, Ap 30, May 10 (Ds) : LI: 



Yaphank, Jl 25 (Ds). 



C. ferruginea Walsh. Saranac Inn, Aug (Ndm); Mountain L., Je (Alex); LI: 



Sea Cliff (Bks). 

 C. fluctuans Walsh. Ithaca, Je (Ndm). 

 C. hageni Eaton. Old Forge, Jl-Aug (Ndm). 

 C. undatus Pict. "NY"(Hagen). 



Baetis Leach 



B. posticatus Say. Old Forge, Jl-Aug (Ndm). 



B. propinquus Walsh. Ithaca, Murphy. 



B. pygmaea Hagen Saranac Inn (Ndm) ; Sacandaga Pk., Je (Alex) ; Ithaca, Jl 

 (Ndm, Morg). 



