DYTISCIDAE. 



n 



punctulatus Aubi. 

 chevrolatii Aube. 



Anisomera Aube. 



cordata Lee. 



Asa bus Leacb (em. Er.) 



subopacus Mann. — 

 parallelus Lee. 

 hypomelas Mann. 

 seriatus Lee. 



Colymbetes seriatus Say. 

 Ag. striatus Aube. 

 Ag. arctus Mels. 

 obsoletua Lee. 

 aeruginosus Aube. 



punctatus Mels. 

 punctulatus AuM. 

 laevidorsus Lee 

 discolor Lee. 



Colymbetes disc. Harris. 

 morulus Lee 

 glabrellus. — 



Colymbetes gl. Motsch. 

 taeniolatus Lee. 



Colymbetes taen. Harris. 

 Ag. taeniatus Aube. 

 lineellus Lee. 

 semipunctatus Lee. 



Colymbetes sem. Kirby. 

 confertus Lee. 

 Bemivittatu3 Lee. 



var. spilotus Lee. 

 stagninus Lee. 

 Colymbetes st. Say. 

 Ag.'striola Aub'e. 

 gagates Aube. 

 nitidus Lee. 



Colymbetes nit. Say. 

 Obtusatus Lee. 



Colymbetes obt. Say. 

 regularis Lee. 



llybius reg. Lee. 

 lugena Lee. 

 brevicollis Lee. 

 brachynotus Lee. 

 strigulosus Lee. 

 tristis Aube'. 



var. dubius Mann. 

 scapularis Mann. 



var. anthraeinus Mann 

 morosus Lee. 

 fimbriatus Lee. 



reticulatus 1 ! Aub'e. 

 intersectus Lee. 

 griseipennis Lee. 

 bifarius Lee. 



Colymbetes bif. Kirby. 

 Inscriptus Lee. 



acuductus Lee. 



Colymbetes ac. Harris. 

 Ag. rugulosus Aub'e. 

 discors Lee. 

 erythropterus Aube. 



Colymbetes er. Say. 

 ovoideus Lee. 

 atratus Mann. — 

 ambiguua Lee. 



Colymbetes amb. Say. 

 Ag. infuscatus Aub'e. 

 lutosus Lee. 

 I obliteratus Lee. 



?Colym. phaeopterus Jfr/% 

 Ag. discolor|| Lee. 

 subfasciatus Lee. 

 clavatus Lee. 

 bicolor. — 



Colymbetes bic. Kirby. 

 irregularis Mann. — 

 sobrinus. — 



Colymbetes sobr. Motsch. 

 fossiger. — 



Colymbetes foss. Motsch. 



Colym"betes Claire. 

 § Ilybius Er. 

 ungularis Lee. 

 biguttulus Lee. 



Dytiscus big. Germ. 



Col. fenestralis|| Say. 



Ilybius fen. Aub'e. 



var. II. pleuriticus Lee. 

 quadrimaculatus {Aube'. 

 fraterculus Lee. 

 laramaeus (Lee.) 

 picipes Kirby. 

 ignarus Lee. 

 sinuatus Lee. 

 ?oblongus. — 



Ilyobius obi. Motsch. 

 an Ag. brevicollis Lee? 



§ Meladema Lap. 



angustus Lee. 

 Agabus ang. Lee. 



§ Cymatopterus Escb. 

 obscuratus (Mann.) 

 seminiger Lee. 

 longulus Lee. 

 strigosus L<e. 

 exaratus Lee. 

 sculptilis Harris. 



triseriatus Kirby. 

 densus Lee. 

 dolabratus Payk. 

 groenlandicus Avbi. 

 drewsenii L< c. 



§ 

 binotatus Harris. 



mac'ulicollis Aube. 

 divisus Aube'. 

 consimilis. — 



Rhantus cons. Motsch. 

 agilis Aube. 



Dytiscus agilis Fabr. 

 calidus Aube. 



Dytiscus cal. Fabr. 



Col. taeniolis Say. 



Hydat. meridionalis Mels. 



DYTISCINI. 

 Hydaticus Leacb. 



bimarginatus Lee. 



Dytiscus bim. Say. 



Hyd. fulvicollis Aub'e. 

 cinctipennis Aube. 

 piceus Lee. n. sp. 



§ Graphoderds Escb. 



j fascicollis Harris. 



Hyd. zonatus var. Aub':. 

 liberus Lee. 



Dytiscus lib. Say. 



D. (H.) thoracicus Harris. 



Colymb. rugicollis Kirby. 



§ Thermonectes Escb. 

 ornaticollis Lee. 



Aeilius orn. Aube. 



Therm, irroratus Mels. 

 latecinctus Lee. 



Aeilius lat. Lee. 

 basillaris Lee. 



Dytiscus bas. Harris. 



Aeilius incisus Aub'. 



Therm, nimbatus Mels. 

 marmoratus Aube. 



Colymbetes marm. Hope. 



Hyd. flavomaculatusC'/a er. 



Aeilius maculatus|| Lee. 



Aeilius Leacb. 



mediatus Aube. 



Dytiscus med. Say. 



Col. maccullochii Kirby. 

 simplex Lee. 

 latiusculus Lee. 

 abbreviatus Mann. 

 fraternus Lee. 



Dytiscus frat. Harris. 



Ac. semisulcatus Aub'. 



Eunectea Er. 



sticticus Er. 



Dytiscus stict. Linn. 

 Dyt. griseus Fabr. 



