BY THE REV. T. BLACKBURN. 517 



MAL.\CODERMID^: 



Helodes. 



The following species have quite the facies of the European 

 species of this genus, but they present certain structural peculi- 

 arities, some in the prominence of the mandibles and all in the 

 development of the apical spines of the tibise. In the first of the 

 species described below these characters are notable enough to 

 suggest the idea of generic distinctness, but in the succeeding 

 species they so gradually become less marked successively that I 

 think I may venture to include them all in Helodes without much 

 fear of misleading. It is possible that some of the small species 

 have the labial palpi of Cyphon. Unfortunately most of the 

 examples before me have their heads tucked in so that the labial 

 palpi cannot be seen, and there are only one or two of which I 

 can spare a specimen to be broken. H. Olliffi has certainly the 

 labial palpi of a true Helodes. In //. cinctus, though I cannot be 

 quite certain, the apical joint appears to be at right angles with 

 the penultimate and to be inserted close to the apex of the latter. 

 In the species which I have called " Cyphon ? " there is a distinct 

 apical spine to the tibiae, though in some it is very small and 

 needs to be looked for. 



Helodes princeps, sp.nov. 



Sat late oblongus ; sat convexus ; nitidus ; supra glaber, subtus 

 dense breviter pubescens ; supra niger, corpore subtus ore 

 antennis pedibus capite postice prothoracisque marginibus 

 rufescentibus ; capite prothoraceque subtilius vix crebre 

 punctulatis ; hoc quam longiori plus quam duplo latiori, 

 angulis posticis rectis ; elytris nullo modo carinatis, sparsuu 

 insequaliter punctulatis, puncfeuris magnitudine diversis ; 

 antennis quam corporis diinidium vix brevioribus, articulis 

 2° 3° que conjunctis quam 4 US . brevioribus. 



[Long. 4, lat. 21 lines. 



This remarkable insect has entirely the general appearance of 

 a very large robust Helodes. Its mandibles, however, are scarcely 



