THE INSECTS OF NEW JERSEY. 227 



PH1LHYDRUS Sol. 



P. hamiltoni Horn. Newark (div) ; Atlantic Co. (Rob); Brigantine 

 Beach IX (Hn) ; Avalon VII, 18 (Brn), Anglesea (W). 



CYMBIODYTA Bedel. 



C. rotundata Say. Caldwell (Cr); Newark (Bf) ; Lakehurst (Rob). 

 C. fimbriata Mels. Reported from all sections in early spring. 

 C. lacustris Lee. Hoboken (LI); Woodside, Newark (Bf ) ; Atlantic Co. 

 (Rob); seashore (Li). 



HELOCOMBUS Horn. 



H. bifidus Lee. (Philhydrus) Ft. Lee IV, 18, under stones (Bt) ; Lake- 

 hurst (Rob). 



HYDROBIUS Leach. 



H. fuscipes Linn. Orange VII (div); Cainden, Gloucester Co. (W) ; 

 Lakehurst (Rob); Woodbury VII, 1, Anglesea VI, 12 (Brn). 



H. globosus Say. Throughout the State, in fresh water streams under 

 stones, sometimes common, IV-VIL 



H. tessellatus Ziegl. Pottersville IX, 5 (Dn); Jamesburg (Rob); Lake- 

 hurst (Lg); Westville V, 28, Clementon V, 14 (GG). 



H. tumidus Lee. Camden III, 3 (Brn); normally a southern species. 



H. suturalis Lee. Atlantic Co. (Rob); Brigantine Beach IX (Hn). 



CRENIPHILUS Mots. 



C. despectus Lee. Lakehurst (Rob). 

 C. rufiventris Horn. "New Jersey" (GG). 



C. subcupreus Say. (Hydrobius) More or less common throughout the 

 State spring and fall. 



C. digestus Lee. Lakehurst (Rob). 



SPH/CRIDIUM Fab. 



S. sea rabaeo ides Linn. Throughout the State, IV-IX, common on fresh 

 cow-dung. This is a European species that was introduced into the 

 more northern part of the State about the date of the previous edi- 

 tion and was therefore not included. Since that time it has spread 

 to all sections and has become plentiful. Fortunately as a scavengei 

 it is not a harmful species. 



CERCYON Leach. 



The species of this genus are not well determined in collections. It is 

 quite probable that we have more species than are listed, and that some 

 of those listed do not actually occur with us. Most of them live in dung 

 or other decaying and fermenting material. 



