96 NOTES ON AUSTRALIAN OOLEOPTERA, 



seriebus biiiis impressis, puncturis singulis setas fiiscas 

 singulas (his vix exsertis) ferentibus ; tibiis anticis extus 

 dentibus 3 acutis sat sequalibus (inferioribus 2 approximatis, 

 a 3° sat remotis) armatis ; tibiis posterioribus 4 extus crenu- 

 latis, ad apicem sat leviter dilatatis ; unguiculis simplicibus. 



[Long. 3 J, lat. 1|^ Hues. 

 This species may be at once distinguished from all its congeners 

 known to me ( M. hopeanus, Westw., however, comes near it in this 

 respect) by the peculiar form of the front of its clypeus which is 

 only moderately emarginate (aud that almost vertically), so that 

 when the head is looked at obliquely from behind, there is a point 

 of view from which the front of the clypeus does not appear to 

 be emaiginata at all, but to be formed by a horizontal trisinuate 

 line. The form of the piothorax is as in M. excisus, Waterh., in 

 respect of the emargination behind the hind-angles, these, how- 

 evei', being less sharply defined than in that species and the 

 emargination behind them less deeply excised. There are about 

 twenty rows of punctures on each elytron (each puncture filled 

 with a seta) and each pair of rows is divided from the next pair 

 by a narrow smooth stria-like space. 



The present insect resembles M. hopeanus, Westw., in many 

 respects, but may be at once distinguished from it by the front 

 extremity of the basal emargination (on either side of the prothorax) 

 being a well defined angle. 



Oodnadatta ; Central Australia. 



Heteronyx Cowelli, sp.nov. 



Modice elongatus; postice minus dilatatus ; minus nitidus ; 

 testaceo-fuscus ; sat pubescens ; capite sat grosse, prothorace 

 sat fortiter minus crebre, elytris fere ut prothorax, pygidio 

 (hoc pilis erectis_ sparsim vestito) leviter sparsim nee sub- 

 tiliter, punctulatis ; labro clypeum vix manifeste, sat late 

 tiuperanti ; antennis 9-articulatis ; unguiculis bifidis ; coxis 

 posticis quam metasternum parum brevioribus, quara segmen- 

 tum ventrale secundum sat longioribus. 



[Long. 3, lat. If line. 



