Dytiscidae 255 



BiDESSUS Sharp 



2385 B. flavicollis Lee. Chaumont, Sep (Not); SI: Sep 8 (L&D) ; 1000 speci- 

 mens of this species were taken in one single haul of the net from the 

 shallow water, close to the shore of the L&D locality, Sep 8, 1900 

 (Sherm). 



2388 B. pulicarius Aube. Ithaca, Oct (Kngt) ; Hessian L., Aug, Esopus (AM) ; 

 Bear Mt. L, Peekskill (Sherm) ; SI, May (L&D). 



2390 B. affinis Say. Newport, May (NYS) ; Cranberry L., Je 23 (H) ; Mooers, 

 Sep (Not) ; Syracuse, Ap-May (H) ; Sodus Pt., Je (Not) ; Olcott, Jl 

 (Dt) ; Buffalo (Z&R) ; E. Aurora, Jl-Aug, common (Dnd) ; Caledonia 

 Cr., Dec (Lee) ; McLean, Aug (Dt) ; Ithaca, Ap, Oct (ShermCU) ; 

 Cortland Co, Jl-Aug, common (Dnd) ; Windsor, Je (Not) ; Oneida 

 Co, Aug, CIms (Dt) ; W. Hebron, Je (Lg) ; West Pt. (Robn) ; Bear 

 Mt. L. (Sherm); Esopus, NYC (AM); SI, Jl, Sep (L&D); LI: 

 Rockaway Beach (AM). 



2394 B. lacustris Say. Buffalo (Z&R) ; Batavia, Jl (Kngt) ; Chautauqua, 



Thompson (Sherm) ; NYC (L&B) ; SI, Je, Aug (L&D). 



2395 B. fuscatus Cr. Sodus Pt., Je (Not) ; E. Aurora, Sep, Nov; Oneida Co, Jl 



25, Clms (Dt) ; Ringwood, Je (Dt) ; Peekskill (ShermCU) ; SI, May, 

 Jl-Aug (L&D). Occurs always in woodland pools (Sherm). 



2398 B. granarius Aube. Esopus (Sherm) ; Peekskill, Jl 21 (ShermCU) ; SI, 



May, Jl-Aug, Nov (L&D). 



2399 B. suburbanus Fall. SI, Jl (L&D) ; type locality in woodland pools 



(Sherm). 



Celina Aube 



2400 



C. angustata Aube. NYC (AM) ; SI, May, Jl (L&D), 



COELAMBUS Thomson 3i 



2407 C. acaroides Lee. E. Aurora, Sep, scarce (Dnd). 



2403 C. punctatus Say {inaequalis Fab.). Adirondacks (Fall) ; Mooers, Sep 

 (Not) ; Syracuse, May (H) ; Sodus Pt, Je (Not) ; Olcott, Je (Dt) 

 Buffalo (Z&R) ; Westfield, May (Not) ; Ithaca, May 8 (ShermCU) 

 McLean, May 21 (ShermCU) ; West Pt. (Robn) ; Peekskill (Sherm) 

 White Plains, Ap 27-Oct 25 (Sq) ; near NYC (L&B); SI, Ap-May, 

 Aug-Oct (L&D). 



2425 C. laccophilinus Lee. Mooers, Sep (Not) ; Ringwood, Je-Jl (Dt) ; Peeks- 



kill, in woodland pools (Sherm) ; SI, Jl-Aug (L&D). 



2426 C. sylvanus Fall. Peekskill, type locality, in woodland pools (Sherm). 



2408 C. turbidus Lee. Mooers, Sep (Not) ; Ringwood, Je (Dt) ; near NYC 



(L&B); SI, Sep (L&D). 



2409 C. dispar Lee. (dissimilis G. & H.). Westfield, May (Not) ; McLean, Aug 



(Dt) ; Washington Co (AM) ; Schoharie (Not) ; Esopus, Sherm (Fall) ; 

 West Farms (AM). 

 2420 C. nubilus Lee. Common and widely distributed from New England to 

 western Texas (Fall). Buffalo (Z&R) ; E. Aurora, Aug-Sep, fre- 

 quent in pools and brooks (Dnd) ; Ithaca (ShermCU) ; West Pt. 

 (Robn) ; near NYC (L&B) ; SI, Jan, Oct (L&D). 



^^ The arrangement of species in Coelambus is that of Fall in his paper on The North American 

 'Species of Coelambus, published in 1919. 



