380 



nearest to each other. They are quite distinct, however, by 

 the prothorax of H . dispar, with its sides quite strongly 

 rounded and its hind angles (viewed from above) notably 

 blunter, as well as by the sculpture of the elytra, on which 

 the punctures in dhpnr are indistinct owing to an ill-defined 

 roughness of the derm, so that in parts it is not easy (in the 

 antero-lateral part quite impossible) to pick out the indi- 

 vidual punctures, they having quite a blurred appearance. 

 The difference between the puncturation of the pronotum 

 and that of the elytra consequently is very great in dispar, 

 the latter appearing close and obscure, in strong contrast to 

 the sparse, well-defined appearance of the former. The claws 

 of dispar are much like those of litigiosus; if they were to be 

 regarded as appendiculate the clypeus and frons resembling 

 those of litigiosus would readily prevent the confusion of the 

 species with any of those in Group II. 



South Australia; Eucla. 

 H. squalid us, sp. nov. Minus elongatus, postice leviter 

 dilatatus; sat nitidus; brunneus, antennis palpisque 

 testaceis; pilis fulvis brevibus minus dense vestitus; 

 clypeo brevi, confluenter ruguloso, antice vix sinuato 

 late truncato-rotundato, labro summo clypei planum 

 baud attingenti; fronte subgrosse sat crebre punctulata; 

 f route clypeoque planum fere sequalem efhcientibus ; 

 antennis 8-articulatis ; prothorace quam longiori ut 19 

 ad 11 latiori, antice minus angustato, supra fortiter 

 minus crebre punctulato (puncturis circiter 16 in seg- 

 menti longitudine), lateribus arcuatis, angulis anticis 

 acutis minus productis posticis (superne visis) obtusis, 

 basi obsolete bisinuata, margine basali sat sequaliter 

 elevato : elytris subtiliter granulatis, subtiliter sat 

 crebre squamose punctulatis (trans elytron puncturis 

 circiter 30) ; pygidio sparsius subtilius punctulato ; coxis 

 posticis quam metasternum paullo brevioribus quam seg- 

 mentum ventrale 2^^"^ sat longioribus; tibiis anticis extus 

 fortiter tridentatis; tarsorum posticorum articulo 

 basali quam 2"s sat breviori, quam 3"s sat longiori; 

 unguiculis bifidis. Long., 4 1.; lat., 2 1-10 1. 

 Easily distinguished from all the species placed before it 

 in the tabulation by the base of its pronotum scarcely sinu- 

 ate, as well as by the obtuse (though quite distinct) hind 

 angles of that segment. The sculpture of its elytra re- 

 sembles that of //. ruhesceus, Blanch., but is finer and closer. 

 It differs from ruhescens, inter alia, by the notably closer 

 and stronger puncturation of its pronotum. 



Central Australia (Dr. Symonds). The type is in the 

 South Australian Museum. 



