]\lr. 'l\ V. Wollaston on the Coleoptera of St. Helena. 23 



was found in St. Helena by Mr. Mellis.s, this would seem to be 

 the smaUest of the true Notioxent hitherto brought to light ; 

 and whilst it agrees with the last species in its somewhat 

 brassy-green hue, it recedes from it totally in its unpunctiired, 

 alutaceous, and less shining surface, and from al/ the others 

 here enumerated in its elytra (which are a good deal shortened 

 behind) being free from striic, with the exception of a single 

 deep one (evanescent anteriorly) on each alongside the suture. 



(Subfam. HuMCEODERIDES. 



Prothorax simplex, sc. linea transversa nulla instructus.) 



Genus 37. IIomceodeka (nov. gen.). 



Cor2)us ct instrumenta cibaria fere ut in Notioxeno, sed antennae 

 aperte remotius ab oculis iuscrtae, ^>ro^7jorrt.v simplex (nee linea 

 basali instructus), atquo articuJus primus tarsoniin ^osticorum minus 

 elongatus. 



Ab ofioioi, similis, et 8e/j»7, thorax. 



The jjri'm a facie aspect of the three species described below 

 is so much that of the smaller Notioxeni (the N. dimidiatus 

 and alutaceus) that I had at first imagined them actually to 

 belong to the same genus ; but a more careful inspection will 

 show that they have certain peculiarities which, although in- 

 significant perhaps in other families, are of primary import- 

 ance amongst the Anfkn'bidce, and which necessitate the es- 

 tablishment of a special group for their reception. Thus, they 

 have no appearance whatsoever of a transverse line either be- 

 fore or at the extreme base of their prothorax (a structure of 

 peculiar significance in the Anthribids) ; their antennje also 

 are implanted distinctly further from the eyes than is the case 

 in Notioxenus (where the scrobs absolutely adjoins the anterior 

 margin) ; and the first joint of their two hinder feet is less 

 elongated. In their more or less faintly metallic, sparingly 

 pubescent, and sculptm-ed surfaces they have much the ap- 

 pearance of minute Notioxeni. 



57. Ilomoiodera rotundipennis, n. sp. 



H. subovata, nigra, in elytris suboenescens, pube grossa demissa 

 fulvesceute parce nebulosa ; capite i)rothoraceque subrugose stri- 

 guloso-(vel etiam subreticulato-) alutaceis sed vix punctatis, 

 opacis ; elytris subrotundatis basi truncatis sed pone medium 

 paulo latioribus, obsolete subasneo-mieantibus, grosse et profunde 

 striato-punctatis, punctis magnis, interstitiis rugosis et subcostato- 



