INSECTS. COLEOPTERA. 45. Hydrophilus. ' 42I 



OHvaceus, Olive ; flernum channelled with a long recurved fpine : 



fhells emarginate 

 Inhabits Coromandel. Acl. Beroh 4. tab. y fig. 2. 

 Body entirely olive or dull green fmooth glabrous : antennae 



and thighs piceous : fpine on the Jferuum nearly as long as the 



body. 



.uratus. Black ; fhells ftriate rounded r fternum fpinous behind. 

 Inhabits South America ; fize of H. Olivaceus. 

 Body glofly -black : jhells ftriate pun&ured : club of the antenncs 

 ferruginous. 



*Caraboi~ Black polimed : fhells fubftriate. 



Inhabits Europe. Scbaeff* Icon, tab. 3$. fig. 10. 



da, 



Lateralis. GlofTy-black : edges of the thorax and fhells yellow. 

 Inhabits South America; half the fize of the lafl. 

 Sternum projecting backwards into a fharp point, with a yellow 

 dot in the middle : tegs ferruginous. 



Rufipes, Shining black ; legs rufous fternum with a recurved fpine. 

 Inhabit China\ half the fize of H. caraboides. 

 Antenna ferruginous, the club brown ; body glabrous immacu- 

 late. 



Emar^'na- Dufky -brown : fliield emarginate. 

 tus. Inhabits Europe; adheres to aquatic plants. 



JBody gibbous, opake : faield widely emarginate: 



*Scarah- Black ; fhells ftriate : legs piceous. 

 tides. Inhabits Europe. Geoff. Ins. par. I, p. 85. Scarabsus piccus. 



Picipes, Black; legs piceous : fhells fmooth. " 



Inhabits Germany. Body fmooth glabrous. 



Orbicularis Roundifh ; body glabrous, black. 



Inhabits Germany ; quite fmooth and mining, 



Subrctundus Roundifh ; glabrous black : fhells ftriate. 

 t Inhabits America ; a little lefs than the lafl:. 



Bicolor. Ovate ; above yellowifli, beneath black. 

 Inhabits Denmark.': larger than H. collaris. 

 Fore-feelers longer than the antennae : legs yellow* 



riu Black ; mouth, fides of the thorax and a few abbreviated 

 lines on the fhells ferruginous. 



Inhabits South America; body gibbous. 

 , _ Antenna: and legs brown : cage of the fulls ferruginous. 



Uxdatus. 



