116 
Var. Pectore anoque ferrugineis. 
Gyrinns mergus Er. 1. c. 
Gyrinus cercurns Schdte Danm. El. 564. 4. 
Allmän öfver liela Skandinavien. 
2. G. bicolor: Oblongus, leviter convexus, supra nigro- 
catrulescens ; elytris subtilissime punctato-striatis, epi- 
pleuris pedibusque ferrugineis. Long. 3 */ 2 lin. 
Fab. Syst. El. I. 274. 2. Gyll. Ins. Sv. I. 142.2. Aubé 
Spec. 678. 
Gyrinns celox Scbdte Danm. El. 565. 6. 
Sällsyntare än föregående. 
3. G .marinm: Ovalis, leviter convexus, supra niger, sub- 
chalybeus, margine roneo; elytris sequaliter punctato- 
striatis; subtus nigro-seneus, prothoracis elytrorumque 
epipleuris concoloribus. Long. 3 lin. 
Gyll. Ins. Sv. I. 143. 4. Er. Käf. d. Mark. I. 190. 1. 
Aubé Spec. 687. Schdte Danm. El. 563. 2. 
Gyrinus lembus Scbdte Danm. El. 563. 1. 
Var. b. Elytris disco ferrugineis. 
Gyrinus dorsalis Gyll. Ins. Sv. 1. 142. 3. Aubé Spec. 686. 
Var. c. Supra niger, subnitidus, margine cferulescenti. 
Gyrinus opacus Gyll. Ins. Sv. IV. 280. 4 — 5. Scbdte 
Danm. El. 564. 3. 
Allmän öfver hela Skandinavien. 
4. G. wncus: Ovalis, leviter convexus, utrinque seneus, 
splendens, pedibus ferrugineis, pectore anoque piceo- 
ameis; elytris sequaliter punctato-striatis, interstitiis 
subtilissime reticulatis, punctis raris impressis. Long. 
2 V, Hn. 
Aubé Spec. 690. 25. 
G. rnarino simillimus, sed multo minor, angustior, supra 
totus aiueus, fronle vix bifoveolata tantum distinctus. Ca- 
put, antice inmquale, substrigosum, fronte inter oculos ob- 
solete bifoveolata, eeneum, antennis concoloribus, ore pal- 
pisque ferrugineis. Prothorax transversus, latitudine sua 
triplo brevior, transversim valde convexus, apice medio 
