704 REVISION OF THE GENUS HETERONYX, 



lobed hind ward in the middle; the puncturation is spaced so 

 that about 17 or 18 punctures of average distance apart could 

 be placed in a line down the middle. The elytra resemble 

 those of H. collaris (except in their much coarser puncturation, 

 their scarcely appearing transversely wrinkled from any point 

 of view, and the apical membrane being better developed). 

 The puncturation and structure of the legs and underside 

 scarcely seem to differ from that of collaris except as follows : — 

 the hind coxae are scarcely so long, the general puncturation is 

 more enfeebled towards the middle of the body, the inner apical 

 angle of the hind femora is less marked, the uppermost tooth on 

 the front tibia is feebler, and the basal piece of the claws is con- 

 siderably less produced in a tooth. 



In some respects must be near //. rufomarginatus, Blanch., but 

 I cannot regard it as that insect because inter alia it differs from 

 the description as follows : — it is much smaller (H. rufomarginatus 

 should be 4J-5 lines), and not pubescent (I do not think the 

 example before me is abraded), and its prothorax is distinctly 

 narrower (not " wider ") than the elytra. 



Endeavour Ptiver ; in the collection of Sir W. Macleay. 



H. IRIDIVENTRIS, Sp.nOV. 



Minus elongatus ; postice baud dilatatus ; minus nitidus ; niger, 

 subtus plus minus iridescens ; antennis palpisque testaceis ; 

 elytris rubidis ; pedibus rufo-testaceis ; supra (fimbriis solitis 

 exceptis) fere glaber ; subtus sparsim pilosus ; obsolete sat 

 sparsim (clypeo crebre rugulose excepto) punctulatus ; labro 

 clypeum sat leviter sat late superanti ; antennis 9-articulatis ; 

 unguiculis appendiculatis ; unguiculorum posticorum parte basali 

 apicali sat longiori, apice breviter acute dentata ; coxis posticis 

 metasterno vix bre\4oribus. [Long. 3|, lat. \\ lines. 



