94 Journal New York Entomological Society. [Vol. xxvn. 



Hydroporus tristis Payk. 14 specimens. 

 Hydroporus tenebrosns Lee. 2 specimens. 

 Hydroporus niger Sharp. 2 specimens. 

 Hydroporus arcticus Thorns. 4 specimens. 

 Hydroporus stagnalis G. & H. 36 specimens. 

 Ilybius pleuriticus Lee. 4 specimens. 

 Agabus seriatus Say. 2 specimens. 

 Agabus anthracinus Mann. 5 specimens. 

 Agabus infuscatus Aube. 1 specimen. 

 Rhantus binotatus Harr. 39 specimens. 

 Rhantus bistriatus Bergst. 18 specimens. 

 Colymbetes scidptilis Harr. 2 specimens. 

 Dytiscus dauricus Gebl. 3 specimens. 

 Acilius semisulcatus Aube. 14 specimens. 



gyrinidje. 



Gyrinus picipes Aube. 15 specimens. 



HYDROPHILID^. 



Helophorus nitidirius Lee. 18 specimens. 

 Hclophorus linearis Lee. 1 specimen. 

 Helophorus lineatus Say. 5 specimens. 

 Helophorus inquinatus Mann. 3 specimens. 

 Ochthebius foveicollis Lee. 1 specimen. 

 Hydrccna pennsylvanica Kies. 18 specimens. 

 Laccobius agilis Rand. 8 specimens. 

 Philhydrus hamiltoni Horn. 31 specimens. 

 Cymbiodyta lacustris Lee. 13 specimens. 

 Hyd robins fuscipes Linn. 1 specimen. 

 Creniphilus digestus Lee. 17 specimens. 

 Crcniphilus subcupreus Say. 3 specimens. 



silphid^:. 



Necrophorus sayi Lap. 1 specimen. 

 Silpha surinamensis Fabr. 3 specimens. 

 Choleva luridipennis Mann. 1 specimen. 

 Cholcva terminans Lee. 1 specimen. 

 Colon clavatum Makl. 1 specimen. 

 Colon elongatum n. sp. 1 specimen. 



