298 NOTES ox AUSTRALIAN COLEOPTERA, 



xMALACODERMID.E. 

 Macrohelodes, gen.nov. 

 Helodi affinis sed major, integumentis magis solidis, corpore 

 supra glabro, elytrorum epipleuris sat latis integris, palporum 

 labialium articulo apicali ad prsecedentis apicem adfixo. 

 The type of this genus is an insect which I described as Helodes 

 princeps (P.L.S.N. S.W. 1891, p. 517), remarking on its being only 

 doubtfully referable to Helodes, but as I had only a single example 

 I thought it better not to propose a new generic name. Since I 

 described it I have had the good fortune to capture six specimens 

 evidently congeneric with it, and representing four distinct 

 species. These insects occur in very marshy places on the higher 

 mountains and are found clinging to the stems of rushes, &c., 

 generally implanted in water. The readiness of the specimens to 

 drop and the necessity usually to go into the water after them 

 render them difficult to secure. They are quite distinct from 

 Helodes, though undoubtedly allied to it. I have failed to discoA^er 

 sexual differences among the specimens before me. 



Macrohelodes lucidus, sp.nov. 



Late ovalis ; convexus ; nitidissi«ius ; supra glaber ; subtus sat 

 dense breviter sericeo-pubescens ; supra niger, elytrorum 

 sutura anguste rufescenti ; subtus rufo-piceis, antennarum 

 basi pedibusque concoloribus ; capite subtiliter sat crebre, 

 prothorace subtiliter sparsim, punctulatis ; elytris fere l?evi- 

 bus ; antennarum articulis 2° 3°que conjunctis quam 4"* vix 

 brevioribus ; cetera ut M. jyvinceps, Blackb. 



[Long. 4, lat. '2\ lines. 



N. S. Wales ; Blue Mountains. 



Macrohelodes crassus, sp.nov. 

 Late ovalis ; convexus ; nitidus ; supra glaber ; subtus sat dense 

 breviter sex'iceo-pubescens ; niger, prothorace (hoc indeter- 

 minate nigro-plagiato) elytris (horum sutura, et maculis 

 ternis discoidalibus longitudinalLter positis, nigris) tibiis 

 tarsorum articulis 1° 5°que, antennarumque articulis 2° 3*^ 



