4.22 INSECTS COLEOPTERA. 45. Hydrophilus. 



Undatm. Ovate, black : thorax pale : {hells ftriate grey. 



Inhabits South America ; rather larger than HLuridus. 

 Head glofly -black : antennae and feelers yellow : thorax with a 

 double black dorfal line : Jhells obfcurely waved with black : 

 . body black : legs yzWovt. 



Erythrote. Ovate, black ; head, thorax and border of the fhells ru- 

 phalus. fous. 



Inhabits a little lefs than H. Collaris. 



Legs rufous : thighs black. 



Hamor- Black : fhells ftriate, tipt with ferruginous : fhanks ferru- 

 rhoidalis, ginous. 



Inhabits Germany ; lefs and more oblong than H. orbicularis. 



Marginellus Gloffy-black : thorax and fhells edged with rufous. 

 Inhabits Germany ; fize of the laft. 

 Shells fmooth : legs black : tar ft ferruginnus. 



'Striata GIoiTy-black : fhells ftriate, ferruginous at the bafe and 

 tip. 

 Inhabits Germany. Hydrophilus obfeurns. Fabricius.- 

 Head and thorax fmooth immaculate ; legs fubferruginous. 



* Luridus. Thorax and ftriate fhells brown-cinereous : body black. 

 Inhabits Europe. Degeer. Ins. 4. tab, 15. fig. 12. 



* Minutus. Ovate black : fhells and legs grey. 



Inhabits Europe ; makes a buzzing noife towards night. 



Grifeus. Above cinereous, beneath brown : legs cinereous. 

 Inhabits Svxony, fize of II. minutus. 



*Bipuncta- Thorax black edged with grey : fhells brown with awhi- 

 tus. tifh margin and dot behind. 



Inhabits Europe ; fmall. 



Head black with a grey marginal dot each fide : dot on the Jhells 

 fometimes hardly viliible. 



Pygmaeus, Grey ; head black behind : thorax yellow ifh. 

 Inhabits South America ; very minute. 

 Shells fmooth grey immaculate : body and legs darker. 



Trkohr Black ; fhells piceous edged with black and ochraceous at the 

 tip: legs tawny. 

 Inhabits Berlin, HerbJI. Arch. 5. /. 122. tab, 28. fig. A. b. 



Cordigcr, 



