ON THE SCARITID.^ OF NEW HOLLAND. 135 



The fore tibioa are armed externally with two long teeth with 

 two small tubercles immediately above theixi. 



It will be seen from the above description that this insect 

 more nearly approaches the 0. viarginatum Westw. than any 

 other, indeed in many respects the species are identical. They 

 differ however in shape, in colour, and in the utter absence in 

 this species of the indistinctly marked sfcriee which occur on 

 the elytra of G. tnarginatmn. 



2. — Caren'um anthracinum. 



Nigrum nitidissimum violaceo-marginatum, capita linea curva 

 utrinque canaliculato, elytris punctis humerali subapicalique 

 impressis. 

 * Long. 9 lin., lat. 3 lin. 



The whole insect is of a polished jet black with the margins 

 tinged with violet. The head has the frontal canals short and 

 much curved -with a deep puncture before each. The thorax is 

 nearly as long as broad, almost truncated anteriorly and rounded 

 behind. The elytra have each two impressed punctures, one near 

 the apex, the other close to the humeral angle, and there are also 

 two or three small punctures along the basal margin. The 

 anterior tibiaa are bidentated externally. 



3. — Carenum puncticolle. 



Nigrum nitidum, capite utrinque canaliculato postice trans- 



versim sub-impresso, thoracis disco antice bipunctato, elytris 



subtilissime striato-punctatis punctoque subapicali utrinque 



impressis. 



Long. 8 1 lin., lat. 3 lin. 



This insect is entirely black and but slightly glossy. The 



head has a shallow transverse depression near the base, with a 



deep canal proceeding from each end of it in a curved direction 



towards the clypeus, where it is divided into two branches with a 



setigerous puncture between. There are also two setigerous 



punctures over each eye. The thorax is broader than long, and 



almost truncated in front, with the hinder angles rounded and the 



]>ase slightly emarginate ; the medial line is well marked from the 



