THE CANADIAN ENTOMOLOGIST. 



169 



Hydroporus, Claim, (continued.) 



undulatus, Say. 



sericeus, Lcc. 



lineolatus, Lee. 



dispar, Lee. 



impressus, Lee. 



nubilus, Lee. 

 Hydrocanthus, Say. 



atripennis, Say. 

 Laccophilus, Leach. 



maculosus, Say. 



fasciatus, Aube. 

 Coptotomus, Aube. 



interrogates, Fabr. 

 Matus, Aube. 



bicarinatus, Say. 



COLYMBETIS, ChurV. 



bignttulus, Germ. 



Colymbetis, Clairv. (continued.) 



binotatus, Harr. 

 Agabus, Leach. 



punctatus, Aube. 



taeniolatus, Lee. 



semivittatus, Lee. 



ambiguus, Lax. 

 Hydaticus, Leach. 



basillaris, Lee. 



ornaticollis, Lcc. 



fascicollis, Harr. 

 Acilius, Leach. 



fraternus, Lcc. 

 Dytiscus, Linn. 



fasciventris, Say. 

 Cybister, Linn. 



fimbriolatus, Mels. 



GYRINID^E. 



Gyrinus, Linn. 



affinis, Aube. 

 analis, Say. 

 pernitidus, Lee. 



Helophorus, Fabr. 



lineatus, Say. 



scaber, Lee. 

 Hydrochus, Germ. 



scabratus, Muls. 



simplex, Lcc. 



impressus, Zimm. 

 Hydrophilus, Geoffr. 



ovalis, Ziegl. 



triangularis, Say. 



nimbatus, Say, 



striolatus, Lee. 



sublaevis, Lee. 



Dineutus, McLeay. 



americanus, Say. 

 discolor, Aube. 



HYDROPHILIDiE. 



Hydrophilus, Geoffr. (continued.) 



glaber, Hbst. 

 Hydrocharis, Latr. 



obtusatus, Lee. 

 Berosus, Leach. 



miles, Lcc. 



pantherinus, Lee. 



infuscatus, Lee. 



exiguus, Lee. 



bimaculatus, Lee. 



penguia, Lee. 



tomentarius, Lee. 



