on the Species of Amyclerus. 79 



different specimens, in some there being very few, whilst in others 

 they are somewhat numerous ; and, further, in the colouring there 

 is some amount of variation, the scales in some being grey, in 

 others brown or rufous-brown — not unfrequently the elytra are 

 variegated with black. 



Amycterus crenicollis, 



A, oblongus, ater, cinereo-squamosus ; fronte longitudinaliter 

 ruguloso, granulis setiferis adspersis et utrinque tuberculo 

 conico, instructo ; rostro basi transversim impresso ; thorace 

 parvulo, subrotundato, supra parum convexo, canaliculato, 

 granulis setiferis sat crebre obsito, lateribus seriatim tuber- 

 culato : elytris punctato-striatis, interstitiis convexis seriatim 

 granulatis, granulis setiferis, squamulis cinereis nigrisque ves- 

 titis. 



Long. Corp. fi lin. 



Patria, Nova Hollandia, ad Swan River. 



This species is very close to A. Bohemani and A. morosus, but 

 may be distinguished from either by the thorax being distinctly 

 ridged at the sides ; the ridge being broken up into a series of 

 conical tubercles, most of which are small, but near the centre is 

 a comparatively large tubercle, which is followed behind by a 

 strong notch. The granules in the thorax are distinctly larger 

 than ill the same part of y/. morosus ; the thorax, moreover, is pro- 

 portionally smaller, and is less convex. Whether to place this spe- 

 cies in the genus Aviycterus or in Acanlholophus, I find it some- 

 what difficult to determine; its characters are, in fact, intermediate. 



Amyclerus Dohrnii. 



A. oblongo-ellipticus, niger, cinereo-squamosus ; fronte longi- 

 tudinaliter rugoso, granulisque setiferis paucis obsito, utrinque 

 subcristato ; rostro basi profunde transversim impresso ; tho- 

 race sat crebre granulate, postice lateribusque tuberculis 

 nonnullis obsito, dorso canaliculato ; elytris striato-punctatis, 

 interstitiis granulatis, postice tuberculis parvulis conicis se- 

 riatim obsitis, in intcrstitio 2° tuberculo magno, subspinoso, 

 ante apicem instructis. 



Long. Corp. 7 lin. 



Patria, Nova Hollandia, ad Swan River. 



Var. B. elyiris interstitiis granulis magnis obsitis ; intersticiis 

 alternis tuberculatis. 



This species bears a very strong resemblance to the A. morosus, 



