282 THE GENEEA AND SPECIES OF AMYCTERID^, 



Adelaide. A detailed description of this insect is given by Mr. 

 Waterliouse, in the volume of the Entomological Society's Trans- 

 actions cited above. 



18. — ACANTHOLOPHUS DENTICOLLIS. 



Obion gus niger parce fusco-squamosus, fronte striata, rostro 

 medio triangulariter impresso, crista utrinque subelevata 

 vix bidentata, thorace granulato biseriatim subtuberculato 

 lateribus dentato, elytris subseriatim punctatis granulatis 

 trifariara tuberculatis tuberculoque majore suturali ante 

 apicem instructis. 

 Long. 8 lin., lat. 3| lin. 

 Hab. Cnrrajong, New South Wales. 

 This species varies considerably in size ; the foregoing 

 measurement I have taken from the largest specimen in my pos- 

 session. The head is short and covered with brownish scales. 

 The forehead is marked with striae converging towards the base 

 of the rostrum, which is separated from the head by a deep trans- 

 verse impression. The rostrum itself has in the middle a 

 triangular depression with elevated margins, the apex of the 

 triaxigle reaching to the base of the rostrum. It has also a trian- 

 gular emargination at its apex. The crest is formed by a tubercle 

 on each side of an oblong shape, and scarcely bidentate. The 

 thorax is coarsely granulated with a row of still coarser granu- 

 lations on each side of the medial line, and with the sides armed 

 with six teeth, the three anterior ones being connate. The elytra, 

 which are broader than the thorax, are striato-punctate, trans- 

 versely rugose, and rather sparsely granulated, with three rows 

 of small tubercles on each, those nearest the apex being the 

 largest, and with one tubercle on each close to the suture and a 

 short distance from the apex. 



19 ACANTHOLOPHUS SERRATICOLLIS. 



Oblongus niger fusco-squamosus, fronte striata, rostro medio 

 breviter bicariuato, crista utrinque bidentata, thorace gra- 

 nulato biseriatim subtuberculato lateribus dentato, elytris 

 seriatim punctatis remote granulatis trifariam tuberculatis 

 tuberculoque suturali ante apicem instructis. 



