328 ^^EW SrECIES OF AMYCTERID^, 



In tlae head and thorax this species resembles the last. The 

 elytra are broad, convex, and marked all over with cinereous and 

 white patches. Their sculpture is rough, consisting of rows of 

 coarse punctures and granules with three rows of tubercles on 

 each elytron. The tubercles are for the most part small, but 

 become gradually larger towards the apex, the posterior one of 

 the first row being very large and acute. The external row 

 consists of only four or five small tubercles. The apex of the 

 elytra is mucronate. 



ACA^^THOLOPHUS EUGICEPS. 



Oblongo-ellipticus subplanus niger fusco-squamosus, fronte 



rugoso-striata inter oculos utrinque tuberculo subtruncato 



armata, thorace piano rude granulato medio canaliculato 



lateribus tridentato, elytris seriatim granulatis bifariam 



tuberculatis tuberculis acutis postice majoribus post 



humeros tuberculo valido armatis apice remote mucronatis. 



Long. 6| lin., lat. 2| lin. 



Hab. King George's Sound. 



The head and thorax of this species have some resemblance 



to those of A . denticolUs, and allied species in the parallel section, 



which have the crest formed of a compound tubercle. The 



elytra have each two rows of spiny tubercles, which become 



larger towards the apex, and are larger in the male than in the 



female. In the place of the third row of some species there is 



a single tubercle near the shoulder. The apex of the elytra is 



dehiscent and mucronate. 



ACANTHOLOPHUS IRRORATUS. 



Oblongo-ellipticus subplanus niger fusco-squamosus confertim 

 albido-macalatus, fronte subrugosa medio leviter carinata 

 postice minute bituberculata inter oculos utrinque bitu- 

 berculata tuberculis connatis subobtusis, thorace piano 

 rugoso medio leviter canaliculato lateribus dentato elytris 

 seriatim granulatis trifariam subtuberculatis apice minute 

 mucronatis. 



Long. 7 lin., lat. 2| lin. 



Hab. Port Lincoln. 



