170 REVISION OF THE GENUS HETERONYX. 



of the elytra is somewhat coarser (a little squamose in appearance) 

 with more evident transverse wrinkling, and the uppermost tooth 

 on the anterior tibiae is somewhat more pleveloped. 



It will thus appear that the present insect is very close to the 

 preceding, differing chiefly in the structure of the labrura, clypeus, 

 and clypeal suture, and the very much finer and more sparing punc- 

 turation of the hinder part of the head. I think, however, that 

 it is really distinct, as the differences just mentioned are not of a 

 kind that appear to distinguish the sexes in this genus (1 do not 

 think that I have seen a male of either species), and moreover 

 are accompanied by decided though slight differences in general 

 sculpture, &c. It may be noted also that H. dehilis is a more 

 nitid species than H. dentipes. 



S. Australia ; Sedan, taken by Mr. B. S. Eothe. 



