BY THE REV. T. BLACKBURN. 703 



anterior tibiae are robust but not very sharp, the uppermost less 

 than half as large as the intermediate. The inner apex of the 

 basal piece of the hind claws is produced in a well defined sharp 

 tooth which however is much less than half as large as the apical 

 piece. 



Adelaide. 



H. MARGINATUS, Sp.nOV. 



Sat elongatus ; postice leviter dilatatus ; sat nitidus ; rufus, 

 an tennis palpisque testaceis, elytris abdomineque olivaceo-piceis 

 (hoc apice rufo, illis latera versus rufescentibus) prothorace piceo- 

 umbrato ; subglaber (fimbriis usitatis exceptis) ; capite (clypeo 

 crasse rugulose excepto) fortius sparsissime, prothorace fortius sat 

 sparsim, elytris fortiter sat sparsim, pygidio (hoc pilis nonnullis 

 vestito) leviter sat crasse, punctulatis ; antennis 9-articulatis ; 

 labro clypeum vix superanti ; unguiculis appendiculatis ; unguicu- 

 lorum posticorum parte basali apicali parum longiori ; coxis 

 posticis metasterno hand brevioribus. [I^^ng. 3i, lat. 1? lines. 



The labrum does not rise above the general plane of the clypeus 

 but (owing to the strong anterior declivity of the latter) it over- 

 tops the/ro?2^ of the same ; it is one of a few species that seem to 

 hover a little doubtfully between my " main sections" II. and III., 

 of the genus, but I place it in Section III. because from a certain 

 point of view the " trilobed outline " of the head appears fairly 

 well defined, having the lobes equal inter se in length and breadth ; 

 in other respects the structure of the head resembles that of 

 H. coUaris. The prothorax is scarcely more than half again as 

 wide as long, the base being about J again as wide as the front 

 which is bisinuate, with blunt scarcely produced angles; the 

 sides are moderately rounded, the hind angles (from all points 

 of view) though obtuse yet quite well defined and scarcely 

 at all rounded off ; the base is gently bisinuate and feebly 



