1G 



DYTISCIDAE. 



D YTJSCIDA E (genuini) . 



HYDROPORINL. 



Hydroporus Clairv. 



hydropicus Lee. 

 punctatus Aube'. 



Laccophilus punct. Say. 



Hyphidrus punct. Harris. 

 cuspidatus Germ. 



Hygrotus pustulatus Mels. 

 latissimus Lee. 

 acaroides Lee. 

 contractulus ^fann. — 

 convexus Aube. 



var. granum Lee. 

 farctus Lee. 

 exiguus Aube". — 



an rite Am. bor. ? 

 obscurellus Lee. 

 a (finis Say. 



nanus Aub.'. 

 erythrostomus Mann. 

 macularis Lee. 

 pullus Lee. 

 lacustris Say. 



pulicarius Aube. 

 cinctellus Lee. 

 amandus Lee. 

 subtilis Lee. 

 inconspicuus Lee. 

 granarius Aube. 

 flavicollis Lee. 

 duodecimlineatus Lee. 



?laevis Kirby. 



alpinus Payk. (f. White). 

 scitulus Lcc. 

 striatellus Lee. 

 eximius Motsch. 

 pulcher Motsch. — 

 rotundatus Lee n. sp. 

 venustus Lee. 

 striatopunctatus Mels. 

 consimilis Lee. 

 undulatus Say. 



fasciatus Harris. 



^ pubipennis Aube. 



5 velutinus Aube. 

 oppositus Say. 



? proximus Aube. 

 punctatissimus Aube'. 

 spurius Lee. 

 mixtus Lee. 

 sericeus Lee. 

 semirufus Lee. 

 lineolatus Lee. 

 vittatus Lee. 

 vitiosus Lee. 

 oblongus Aube'. 



catascopium Say. 



interruptus Say. 



paralielus Say. 

 griseostriatus Steph. 



Dytiscus gr. De Geer. 

 humeralis Mann. 

 signatus Mann. 

 modestus Aub?. 



ruficeps Aub,'. 

 axillaris Lee. 



humeralis|| Lee. 

 fortis Lee. 

 notabilis Lee. 

 niger Say. 

 subpubescens Lee. 



9 hirtellus Lee 

 truncatus Mann. — 

 tartaricus Lee. 

 americanus Aube'. 

 dichrous Mels. 



?discicollis Say. 

 puberulusll Mann. 

 caliginosus Lee. 

 subtonsus Lee. 

 rufinasus Mann. 

 varians Lee. 



ruficapillus Mann. 

 puberulus Lee. 

 nigellus Mann. 

 planatus Mann. — 

 tenebrosus Lee. 

 lutulentus Lee. 



luridipennis[| Lee. 



an praec. var. ? 

 vilis Lee. 

 oblitus Aube. 



luridipennis Mels. 



Jliuibalis Mels. 

 collaris Lee. 

 latebrosus Lee. 

 concinnus Lee. 

 pulcher Lee. 

 conoideus Lee. 

 difformis Lee. 

 similis Kirby. 

 picatus Kirby. 

 dispar Lee. 

 decemlineatus Mann. 

 quadrilineatus Mann. 

 turbidus Lee. 

 suturalis Lee. 

 ovoideus Lee. 

 medialis Lee. 



?IIyg. impressifrons Motsch. 

 fraternus Lee. 

 patruelis Lee. 

 nigrolineatus Steph. — 

 lutescens Lee. 

 nubilus Lee. 



discoideus Lee. 

 aulicus Aube. — 

 hybridus Lee. 

 mellitus Lee. 



Celina Aube. 



grossula Lee, n. sp. 

 angustata Aube. 



NOTERINI. 



Colpitis Lee. 

 inflatus Lee. n. sp. 



Stiphis Aube. 



bicolor Lee. 



Noterus bicolor Say. 

 S. gibbulus Aub,'. 



Hydrocaiithus Say. 



iricolor Say. 

 atripennis Say. 

 nanulus Lee. n. sp. 



COLYMBETINI. 

 Laccophilus Leach. 



maculosus Say. 



Dytiscus mac. Germ. 

 truncatus Mann. 



californicus Motsch. 

 fasciatus Aube. 



var. rufus Mels. 



?biguttatus Kirby. 

 proximus Say. 



americanus Aub'. 

 uudatus Aube. 

 gentilis Lee. n. sp. 



Coptotomus Say. 



difficilis Lee. 

 interrogatus Aube. 



Dytiscus int. Fabr. 



Colymbetes venustus Say. 



?Copt. serripalpis Say. 

 longulus Lee. 



Hiatus Aube. 



bicarinatus Aube. 

 Colymbetes bicar. Say. 



Copelatus Er. 



glyphicus Lee. 



Colymbetes glyph. Say. 

 Cop. decemstriatus Aube. 



