COLEOPTERA 245 



The male of this species is distinguished chiefly by the stoutness of the two basal 

 joints of the antennae, the first, in well-developed examples at least, being very stout 

 and subtriangular in form, the second very short and quadrate, and their colour is black 

 or nearly so. Normally it is a red insect, with only some fuscous or black spots on the 

 elytra, and even these are sometimes absent, but in some examples the black colour is 

 a good deal extended over the insect, the basal half of the elytra remaining pale. In 

 general the $ resembles the ^, but the peculiar character of the basal antennal joints is 

 not always so pronounced. In faded examples the squamosity is grey, instead of 

 golden. 



Hab. Lanai (2000 — 3000 ft.) ; Molokai (3000 ft.). 



( 1 20) Proterhinus debilis Sharp. 



Proterkinus debilis Sharp, Tr. Ent. Soc. London, 1878, p. 19. 



I have not met with any examples on Oahu that agree with this species, and have 

 only examined three or four specimens, so I do not know whether the antennae vary in 

 structure. In its typical form it is quite distinct from any other Oahuan species. Mr 

 Blackburn also referred some specimens taken on Hawaii to this species. 



Hab. Oahu, Waianae mountains ; and on Hawaii (Blackburn). 



(121) Proterhimts deceptor, sp. nov. 



Rufescens, elytris latera versus nigris vel nigro-notatis, horum angulis humera- 

 libus haud distinctis. P. oscillanti simillimus sed setis elytrorum erectis magis distinctis, 

 et rostro % evidenter minus elongate et latiore. ^ ?. Long. 175 — 2*25 mm. 



This species is very similar in most respects to P. oscillans, the humeral angles of 

 the elytra being usually very indistinct or effaced. The squamosity, which likewise has 

 a tendency to form a number of roundish spots on the elytra, is thereon greyish or 

 silvery rather than golden. Their erect setae in fresh examples are longer, more 

 numerous and much more evident, and so also are those upon the legs. Usually the 

 elytra are red, and black or infuscate only along the lateral margins, but sometimes 

 about the middle the black colour extends inwards to form lateral spots as in oscillans. 

 These distinctions alone would perhaps appear hardly sufficient for the formation of 

 another species, were it not for the fact that the rostrum of the % is decidedly shorter 

 and wider than that of oscillans, and is not distinctly narrowed towards the base. 



Hab. Oahu. Waianae range. Examples from slightly different localities do not 

 altogether agree, and it is uncertain whether the series examined is really all of one 

 species. 



