BY W. MACLEAY, JUN., ESQ. 329 



The head is less rugose in this species than in the last. 

 There are two minute tubercles on the forehead as is the case in 

 most species of Guhicorkiitichus, to which genus the present 

 insect makes a decided approach, though its nearest affinity is to 

 A. denticollis and A. serraticolUs. The crest is deeply bilobed 

 and rather obtuse. The thorax is strongly dentated on the sides, 

 and flat and rugose on the back with a narrow medial line. The 

 elytra are regularly granulated and punctured each with three rows 

 of very small tubercles, scai'cely larger on the basal portion than 

 the granules. The apex is very minutely mucronate. The whole 

 insect is thickly sprinkled with whitish spots. 



ACANTHOLOPHUS SUBLOBATUS. 



Oblongo-ellipticus niger fusco-squamosus, fi'onte leviter exca- 

 vata inter oculos utrinque tuberculata tuberculis leviter 

 bilobatis, thorace dorso medio canaliculate utrinque leviter 

 tuberculato lateribus bidentato, elytris seriatim punctatis 

 trifariam tuberculatis tuberculis parvis posticis majoribus 

 apice minute mucronatis. 



Long. 6 lin., lat. 2j lin. 



Hab. Daudenong, Victoria. 



The affinity of this species is to A. approximatus, it differs 

 from it, however, in the less excavated forehead, more rounded 

 crest, almost flat thorax, and less tuberculated elytra. 



I have given the dimensions of the male, the female is much 

 larger. 



AcANTHOLOPHUS GRAVICOLLIS. 



Oblongo-ellipticus niger fusco-squamosus, fronle leviter exca- 

 vata inter oculos utinnque spiuis duabus connatis instructa 

 spina posteriori longa arcuata, thorace medio utrinque 

 tuberculato tuberculo apicali magno longo subdentato late- 

 ribus dentato, elytris seriatim punctatis et granulatis 

 trifariam tuberculatis tuberculis posticis lateralibusque 

 majoribus. 



Long. 7 lin., lat. 2J lin. 



Hab. Port Lincoln. 



