32 



Genus [287]. Ochthebius. Leach. Ten species. 



O. marinus, Payk. Brassy green and shining; antennae 

 and legs testaceous; about a line; stagnant waters. 

 PL 38, fig. 4. 

 Genus [288]. Amphibolus. Waterh. One species. 



A. atricapillus, Waterh. Testaceous, with a coppery reflec- 

 tion ; head black ; antennae, palpi and legs dusky testa- 

 ceous ; about a line long ; running streams, Yorks. PI. 

 38, fig. 5. 

 Genus [289]. Hydr^na. Kugelann. 



H. riparia, Kug^ Pitchy black, shining; antennae, palpi 

 and legs reddish testaceous; one line and a quarter; 

 running streams. PI. 38, fig. 6. 



Family [33]. Hybrophilim. Leach. 



Genus [290]. Limnebius. Leach. Nine species. 



L. truncatellus, Fab. Deep black ; antennae, palpi and legs 

 reddish; one line and a quarter- ponds, ditches arid 

 streams. PL 39, fig. 1. 

 Genus [291]. Laccobius. Erichson. One species. 



L. minutus, Lin. Black ; head and thorax brassy ; elytra 

 dirty testaceous, sprinkled with dark spots; antennae 

 and legs pale ; one line and a half; ponds and ditches. 

 PL 39, fig. 2. 

 Genus [292]. Berosus. Leach. Four species. 



B. luridus, Lin. Obscure testaceous ; head and a square 

 spot on the thorax brassy ; elytra with dispersed dark 

 spots ; legs pale, their tarsi darker ; two and a half to 

 three lines ; ponds and ditches. PL 39, fig. 3. 

 Genus [293]. Hydrous. Lin. One species. The tarsi of 

 the female are simple. 



H. piceus, Lin, Entirely of a greenish black, shining; 

 antennae reddish pitchy ; legs pitchy ; one inch and three 

 to six lines ; stagnant ponds and ditches. PL 39. fig. 4. 

 Genus [294]. Hydrophilus. Fah. One species. 



H. caraboides, Lin. Greenish black and shining ; antennae 

 and palpi pitchy red; legs pitchy; about ten lines; 

 ponds and ditches. PL 39, fig. 5. 

 Genus [295]. Hybrobius. Leach. Five species. 



H. oblongus, Herb. Pitchy black and shining; antennae, 

 palpi, tibiae and tarsi reddish ; four lines ; bank of ponds 

 PL 40, fig. 1. v 

 Genus [296]. Philhydrus. Solier. Fifteen species. 



P. melanocephalus, Fab. Testaceous ; head, disk of thorax, 



