80 



Genus. Chalcosoma, Hope. 

 Type of the Genus. Geotrupes Atlas, Fab. 



Caput unicorne cornu reflexo postice dentato 

 clypeo bifido. 



MendibulcB basi dilatatse apice falcatse acutse. 



Maxillce elonoata; lobo tcnui subacute, valde hir- 

 sutse. 



Palpi maxillares 4-articulati, 1'"" brevi mini- 

 mo, 2''" crassiori oblongo 3"" obconico ultimo ovato 

 producto, duobus prsecedentibus longiori. 



Mentum elongatum sensim attenuatum apice 

 paullo angulariter dilatatum et subemarginatum. 



Palpi labiales 3-articulati duobus primis articulis 

 obconicis, extimo elongato ovato apice subtruncato. 



Corpus crassissimum, abdomine thorace latiori. 



Thojrix tricornis cornu medio brevissimo, cornu- 

 bus lateralibus elongatis porrectis. 



Femora antic a unidentata. 



I am inclined to think from the examination of 

 many specimens that both sexes may have the thorax 

 cornuted ; the species therefore which I described 

 from the collection of General Hardwicke, form a 

 subgenus closely allied to Chalcosoma ; the femora 

 of the latter are without the prominent tooth so 



