BY THE REV. T. BLACKBURN. 151 



externis inferioribus validis ; labro clypeum late sat fortiter 

 saperanti ; antennis 8-articulatis ; unguiciilis appendiculatis. 



[Long. 4f5i lat. 2^3^-21 lines. 



Closely allied to II. punctipennis, the description of which may 

 be taken as applying to it except in so far as here modified. The 

 "trilobed outline" of the head is much more conspicuous owing 

 to the greater prominence of the lab rum, the middle lobe 

 appearing slightly narrower in proportion (i.e., very little more 

 than half as wide as the lateral ones) ; the plane of the clypeus is 

 rather more distinct from that of the rest of the head and its 

 lateral margins are more dilated, their outline being moreover 

 angularly contracted at its base close in front of the eye (instead 

 of forming an even gentle curve from the eye to the front) ; the 

 entire head is very finely, closely, evenly and rugosely punctulate 

 instead of having (as II. punctipennis has) the portion behind the 

 clypeal sature very much more sparingly punctulate than the 

 clypeus. The prothorax is slightly less wide in proportion to its 

 length. The surface of the front face of the labrum is roughened 

 and granulose, while in pitnctij)ennis it is smooth, nitid, and finely 

 punctulate. 



Mulwala, N.S.W. ; taken by Mr. T. G. Sloane. 



H. NIGRICANS, Er. 



Sat elongatus; sat convexus; postice vix dilatatus; sat nitidus; 

 piceo-niger, antennis palpisque testaceis, tarsis rufescentibus ; pilis 

 brevibus albidis adpressis sat sparsim vestitus ; supra fortius sat 

 crebre sequaliter (pygidio sparsim excepto) punctulatus ; tibiarum 

 anticarum dentibus externis inferioribus robustis acutis ; labro 

 clypeum late minus fortiter superanti ; antennis 8-articulatis ; 

 unguiculis appendiculatis. [Long. 4, lat. 2i lines (vix). 



Clypeus scarcely emarginate in front, its reflexed margin very 

 fine but continuous; "trilobed outline " of head fairly defined, the 

 middle lobe appearing decidedly narrower than the lateral ones ; 

 clypeus not forming an even surface with the rest of the head ; 



