BY THE REV. T. BLACKBURN. 431 



The part of the labrum overtopping the clypeus is narrow and 

 the sides of the clypeus are considerably reflexed so that the 

 "trilobed outline" of the head appears well-defined with the 

 middle lobe less than half as wide as the lateral ones and equal to 

 them in length. The clypeus forms a nearly even surface with 

 the rest of the head and its suture is very feeble. The prothorax 

 exactly resembles that of H. potens, except in having the hind 

 angles more rounded off' and its surface without any indication of 

 a dorsal channel which in H. 2>otens seems to be invariably indi- 

 cated, — at least in the middle of the disc. In other respects the 

 description of E. ^JOtens may be read as applying to this species 

 with the following exceptions ; — the elytra are considerably more 

 pilose and their sculpture though still lightly impressed is very 

 evidently better defined ; the hind coxa? are considerably shorter 

 than the metasternum. There is also a marked difference in shape 

 between the two insects, If. incultus being in every way a more 

 convex species than //. potens ; viewed from the side the upper 

 outline of the elytra appears in the former as a well-marked gentle 

 arch evidently rising from the scutellum to aboub the middle of 

 its length, while in H. potens it runs backward nearly on a level 

 till it deflects at the posterior declivity. The black club of the 

 antennee distinguishes this from the majority of species of 

 Heteronyx, In the hind claws the produced apex of the basal 

 piece is decidedly stouter, and not much shorter, than the entire 

 apical piece. 



Near Adelaide ; Sir W. Macleay's collection possesses a specimen 

 attributed to N.S.W. I have seen only these two examples. 



H. ASPERICOLLIS, Sp.nOV. 



Elongatus ; postice vix dilatatus ; sat nitidus ; niger ; pilis 

 elongatis rufis vestitus ; supra crebre rugulose sat crasse punctu- 

 latus ; antennis basi, palpis, tarsisque, rufescentibus; labro clypeum 

 late minus fortiter superanti ; antennis 9-articulatis ; unguiculis 

 breviter bifidis. [Long. 2|, lat. li lines. 



