266 Hydrophilidae 



2777 B. peregrinus Hbst. Cranberry L., Je 18 (H) ; Buffalo (Z&R) ; Ithaca, 

 Jl, McLean, Aug (Dt) ; Cayuga L, Basin (Rich) ; Washington Co 

 (AM); West Pt. (Robn) ; NYC (L&B) ; SI, Ap-May (L&D) ; LI: 

 Fishers I., Aug (AM). 



2781 B. exiguus Say. LI (Winters). 



2782 B. pallescens Lee. "NY" (Lee). 



2783 B. infuscatus Lee. West Pt. (Robn); "NY" (AM). 



2784 B. striatus Say. Essex Co, Aug (NYS) ; Cranberry L., Je (H) ; Syracuse, 



Ap-May, in cedar and sphagnum bog (H) ; Mooers, Sep, Sodus Pt., 

 Je (Not) ; Buffalo (Z&R) ; E. Aurora, Jl, Sep, frequent (Dnd) ; 

 Westfield, May (Not) ; Cayuga L. Basin (Rich) ; Ithaca, Aug (NYS) ; 

 Ringwood, McLean, Jl-Sep (Dt) ; West Pt. (Robn) ; White Plains, 

 Ap 9-Sep 2 (Sq) ; NYC (L&B) ; SI, Ap-Aug (L&D). 



Hydrous Dahl 



2789 H. triangularis Say. Buffalo, Aug, at light (Dnd, Z&R) ; Pike, Jl 

 (NYS) ; Avon, Geneva, Sep (Cls) ; Cayuga L. Basin (Rich) ; Ithaca, 

 Jl-Sep (Rich) ; Albany, Jl (NYS) ; New Baltimore, Zah (AM) ; 

 West Pt. (Robn) ; White Plains, Aug 30 (Sq) ; Port Jervis (Lint) ; 

 NYC (AM) ; SI, May, Aug-Oct (L&D) ; LI: Cypress Hills, Je 

 (AM) ; Huntington, Ap (AM) ; Rockaway, Aug, Zah (AM) ; Babylon, 

 Jl (AM); Flatbush, Ap (AM). 



DiBOLOCELUS Regimbart 

 2792 D. ovalis Ziegl. West Pt. (Robn); SI (L&D). 



Hydrophilus DeGeer 



2795 H. obtusatus Say. Mooers, Sep (Not) ; Cranberry L., Je 18 (H) ; Syra- 

 cuse, Ap-May, in ponds and bogs (H) ; Olcott, Jl (Dt) ; Buffalo 

 (Z&R) ; Pike, Ap (NYS) ; Castile, Brad (Flet) ; E. Aurora, Jl-Oct, 

 common in pools (Dnd) ; Avon, Mar (Cls) ; Cayuga L. Basin (Rich) ; 

 Ithaca, Aug (Vdyk) ; Ringwood, Je (Dt, Rich) ; Hermitage, Jl 

 (Mat) ; West Pt. (Robn) ; West Farms, Van Cort. Pk., May (AM) ; 

 NYC (L&B); SI, Mar-Aug, Dec (L&D); LI: Babylon, Je (AM); 

 Flatbush, May (AM) ; Cypress Hills, May, Zah (AM) ; Orient, 

 Lath (NYS). 



TrOPISTERNUS Solier 



2797 T. striolatus Lee. "NY" (Sharp). 



T. blatchleyi Orych. (sublaevis Blatch. not Lee). Syracuse, May, in 



sphagnum bog (H). 



2805 T. glaber Hbst. Mooers, Sep (Not) ; Pike, Jl (NYS) ; Olcott, Jl 

 (Dt, Richmond) ;^ Buffalo (Z&R) ; E. Aurora, Jl 9, common (Dnd) ; 

 Syracuse, May, in sphagnum bog (H) ; Cattaraugus Co, Jl (Ds) ; 

 Avon, Dec-Jan, Geneva, Sep (Cls); French's Mill, Je (NYS); 

 Canandaigua L., Jl (NYS) ; Westfield, May (Not) ; Cayuga L. Basin 

 (Rich) ; Ithaca, Jl (Vdyk) ; Windsor, Je (Not) ; Albany, Ap (NYS) ; 

 West Pt. (Robn); White Plains, Mar 30-Nov 2 (Sq) ; Nyack, Oct, 

 Zab (AM) ; NYC (L&B) ; SI, Je (L&D) ; LI: Babylon, Je (AM) ; 

 Flatbush, Ap, Oct, Zab (AM) ; Cypress Hills, Sep (AM) ; Calverton, 

 Sep (Ds) ; Fishers I.. Aug (AM) ; Orient, Lath (NYS). 



