1236 REVISION OF THE GENUS HETERONYX, 



might be inferred that the labrum strongly overtops the clypeus, 

 whereas in this species it scarcely reaches the level of the upper 

 surface of the same. As, however, the labrum stands out strongly 

 in a forward direction, and its upward directed part is very 

 perpendicular, it has the appearance on a casual glance of being 

 very high. 



This insect is so extremely like the preceding {H. diversiceps) 

 that the description of that species may be taken to apply to it, 

 with the following modifications : — the clypeus, instead of being 

 evenly truncate in front with a well-defined continuous reflexed 

 margin, has the front edge turned up perpendicularly, — so that 

 if the erect face of the labrum be looked at from in front, the 

 front of the clypeus seems to stand up behind it as another 

 similar erect surface; the prothorax is considerably narrowed 

 forward and is much more strongly lobed hind ward in the middle, 

 its puncturation being scarcely different from that of the elytra ; 

 the three external teeth of the front tibiae are stronger and 

 sharper. 



H. .EQUALICEPS, Sp.nOV. 



Parum elongatus ; postice minus dilatatus ; sat nitidus ; ferru- 

 ginous, pilis sat brevibus adpressis vestitus; capite toto sat sequal- 

 iter sat fortiter sat crebre, prothorace elytrisque minus fortiter, 

 punctulatis ; labro sat fortiter porrecto clypei superficiem haud 

 attingenti ; antennis 9-articulatis ; unguiculis bifidis. 



[Long. 23-3, lat. ]§- (vix) IJ lines. 



This species is so evidently a close ally of the preceding two 

 that it would seem hardly possible to place it in another section, 

 but it is undeniable that the labrum is not very much more promi- 

 nent than in some species of Section I. (e.g., Bovilli). It (^.e., the 

 labrum) is not protruded forward so much as in the preceding two 

 species, neither does it rise so nearly to the level of the clypeus, — 

 nevertheless it is certainly more prominent and more turned up 

 than in the species that I have placed in Section I. The clypeus 

 is gently but very distinctly emarginate in front, the sides of the 



