BY W. MACLEAY, ,1UN., ESQ. 333 



elytron, the terminal one of the first and second rows being large 

 and conical. The apex is dehiscent and slightly mucronate. 

 The sides of both thorax and elytra are white, and their upper 

 surface contains patches of the same colour. 



Htborhynchds prodigus. 



Oblongus niger cinereo-squamosus, capite utrinque spinis 



duabus longis subacutis subarcuatis armato, thorace bifa- 



riam tuberculato spina laterali magna instructo, elytris 



punctato-striatis trifariam tuberculatis tuberculis postice 



longis acutis apice remote mucronatis. 



Long. 6 lin., lat. 1| liu. 



Hab. King George's Sound. 



This species leads to Acantlioloplms. On each side of the 



head between the eyes there is a long subacute spine, and in 



front of and within it, is another of equal or even greater 



length, having its summit slightly curved backwards. Behind, 



in the centre of the forehead, are two very small tubercles. The 



thorax is narrow, with tubercles on each side of the medial line, 



and with a sharp spine pointed a little forwards in the middle of 



the side. The elytra are coarsely punctured in stri^, and have 



each three rows of strong acute tubercles, those nearest the apex 



in the first and second rows being very long, particularly in the 



male. The third row consists of only about three tubercles of 



smaller size. The apex of the elytra is mucronate, the points 



being some distance apart. The sides of both thorax and elytra 



are slightly marked with spots and vittte of whitish scales. 



Htboehtnchds bicorndtds. 



Oblongus niger cinereo-squamosus, capite utrinque inter oculos 

 spina longa subacuta armato antice subtilissime bitubercu- 

 lato, thorace bifariam tuberculato tuberculo antico subpro- 

 ducto lateribus spinoso, elytris rude seriatim punctatis 

 bifariam tuberculatis post humeros unituberculatis apice 

 dehiscentibus submucronatis. 



Long. 4| lin., lat. 1^ lin. 



Hab. Port Lincoln. 



