rulicollis DG. 

 ^ fulvicollis Er. 

 ^ fluviatilis Aube. 

 f^ lineatocollis Mrsh. 



/ TT^^^-W- 



y 



Cneinidotus 



Illiger. 



caesus Duftschm. 

 rotundatus Aubc. 



Peloblus 



Schonherr. 

 Herrmanni Fabr. 



Cryrmus 



Geotfroy- 



«trigipennis SuffV. 



^^triatus Fabr. 



abdominalis Aubc. 



ininutus Fabr. 

 ^J^rinator III. 

 rus Ahr. 



14 



I^alpicornia. 



Spereheus 



Kugelann. 

 ^emarginatus Schaller 



Melopliorus 



Fabricius. 



rugosus 01. 

 j^iubilus Fabr. 

 ^ intermedius Muls. 

 y*>tuberculatus Gyll. 



frigidus Graells. 

 j^aquaticus Linn. 

 '^villosus Euftschm. 

 ^grandis III. 

 ^granularis Linn. 

 ■^(.griseus Hbst. 



glacialis Heer. 



borealis Sahlb. 

 /Fennicus Pk. 

 \cinereus Marsh. 



alpinus Heer. 

 ^^orsalis Mrsh. 

 j^umilio Er. 



Arvernicus Muls. 

 Jianus Er. 

 "^^costatus Schh. 



/mergi 

 < var. n 

 ^var. n 



Vbi 

 \va 



marginatus Grm. 

 atator Ahr. 

 icolor Pk. 



ar. angustatus Aube. 

 Caspius Menetr. 

 ^^^^distinctus Aube. 

 elongatus Aube. 

 coljmbus Er. 

 ^niarinus Gyll. 

 '*\var. dorsalis Gyll. 

 ^ opacus Shlb. 

 ^ntens Suffr. 

 '\aeneus Aube. 



Oreetoehilus 



Esch.scholz 

 ,\iIIosus Fabr. 



Hydroehus 



Germar. 



brevis Hbst. 

 j^elongatus vSchall. 

 jearinatus Grm. 

 angustatus Allbr. 

 nitidicollis Muls. 



OchtheMus 



Leach. 



granulatus Muls. 



exculptus Germ. 

 jj^ibbosus Germ. 



lacunosus St. 



margipallens Latr. 



marinus Pk. 

 ^pygmaeus Fabr, 

 ^bicolon Gerni. 



rufomarginatus Er 



exaratus Muls. 



pellucidus Muls. 



ibssulatus Muls. 

 1 foveolatus -Gerni> 



difficilis Muls. 

 Hybernicus Gurt. 

 punctatus Steph. 

 nobilis Heer. 

 quadricollis Muls. 



Hydraena 



Kugelann. 



testacea Curt. 



rugosa Muls. 



nigrita Germ. 

 I^ ripana Kugel. 

 ^^ angustata St. 



palustris Er. 



angulosa Muls. 



politaKsw. 



lapidicola Ksw. 



dentipes Grm. 



deplanata Ksw. 



gracilis Grm. 



pulchella Grni 



lata Mkl. 



flavipes St. 



Tiimnebius 



Leach. 



truncatellus Thunb. 

 ^ papposus Muls. 

 nitidus Mrsh. 

 atomus Duftschm. 



Berosus 



Leach. 



j^spinosus Steph. 

 /^aericeps Curt. 

 Vsignaticollis Charp. 

 ij^luridus Linn. 

 murinus Kst. 

 suturalis Kst. 

 Hispanicus Kstr. 

 afiinis Brull. 



Hydrophilus 



Geoffroy. 



1 



^piceus Linn. 



aterrimus Eschsch. 



