BY THE REV. T. BLACKBURN. 1223 



rounded off. The elytra are devoid of striation, their transverse 

 wrinkling is very conspicuous, their lateral fringe normal, their 

 apical membrane obsolete. The puncturation of the whole upper 

 surface is coarse and rough. The puncturation of the undersurface 

 is strong ; on the metasternum it is moderately close but becomes 

 less so hindward. The hind coxfe are not much shorter than the 

 metasternum and are very much longer than the 2nd ventral 

 segment. The ventral series consist of long fine hairs and are 

 moderately conspicuous. The hind femora are considerably wider 

 than the intermediate with their inner apical angle very little 

 developed. The hind claws are appendiculate, the basal piece 

 about twice as large as the apical with its inner apex little pro- 

 duced. The front tibise are much compressed and dilated, with 

 three large obtuse teeth on their external margin, of which the 

 uppermost is about half as large as the 2nd. 



This minute species seems to be allied to H. hirtuosus, Blackb., 

 from which, however, it differs by many structural characters. 

 In the tabulation it would stand side by side with H. spretusy 

 Blackb., from which its small size will at once distinguish it. 



A single example in my own collection ; taken in the Adelaide 

 district. 



The following previously described species belonging (with more 

 or less certainty) to this group (i.e., having the labrum entirely 

 below the clypeus and 8-jointed antennae) I have not been able to 

 identify, — viz., rotundiceps, Blanch., spadiceus, Burm., and ungui. 

 cnlatus, Burm. Of these rotundiceps is said to be iridescent 

 (differing thereby from all known to me in the group) and to 

 occur in " Eastern New Holland ; " its size is not specified. H, 

 spadiceus is from Swan River (I have not seen any species of the 

 group from Western Australia), its length is 4 lines, and it is 

 described as entirely glabrous ; the description of the relation of 

 clypeus and labrum is vague, — the latter being merely said to 

 *' protrude in front of " the former, — but it would probably fall in 

 this group ; I do not think anything I have seen can be identical 

 with it. II. unguicidatus is said to be from " New Holland," 

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