COLEOPTERA 635 



(51) Mirostei'iius exitm'us, sp. nov. 



Niger, antennis rufis, clava nigra, elytris densissime punctatis, postice subtilissime 

 cinereo-tomentosis, anterius pubescentia aurea, ad latera postice prolongata, vestites. 

 Oculi mediocres, latissime separati. Antennarum clava maxima, articulis 2 basalibus 

 latis, angulo interno quasi levissime producto, conspicue acuto. Elytra anterius dense 

 punctata, posterius omnium densissime et minutissime punctulata, lateribus humeros 

 juxta nitidis. Metasternum antice brevissime carinatum sive tuberculatum. Lone. 

 2'75 mm. 



Quite unlike any other species, the rather coarse yellow pubescence of the basal 

 half of the elytra is prolonged backwards towards the sides, the grey apical tomentum 

 being excessively fine and short ; the antennae are also remarkable, the basal joint of 

 the club having a slight irregularity or sinuation of the margin of its sides, which 

 increases the acuteness of its inner angle. This structure is also more or less per- 

 ceptible in the second club joint. 



Hab. Oahu, without locality, collected by Koebele and myself; two specimens. 



(53) Mirostcrmts punctatits Sharp. 



Mirosteriiiis punctaius Sh., Tr. Ent. Soc. London, 1881, p. 526. 



Unless I have taken it recently, I do not know this species. I believe I possess a 

 specimen from Kauai that agrees fairly well with the description, but it is not at present 

 available for examination. 



Hab. Oahu, Waianae mountains (Blackburn). 



(53) Alirostennis soiiiariits, sp. nov. 



Niger, dense subtiliter subaequaliter punctatus, totus pubescentia pallida flavescenti 

 vestitus. Oculi sat magni, sed late separati. Antennarum clava magna, articulo primo 

 triangulari, fortiter dilatato, angulo interno baud acuto. Pronotum subtiliter (ad basim 

 dense) punctatum. Elytra crebre distincte punctata, lateribus versus humeros nitidis et 

 perparce punctatis. Metasternum $ fortiter carinatum. Long. 3'5 mm. 



I have seen only one $ of this species. It appears to be distinct from AI. punctatus 

 Sharp by the more widely dilated basal two joints of the antennal club and the apical 

 joint is also less narrow and, owing to the oblique truncation, sharper at the apex. 



Hab. Oahu, Honolulu range, i =;oo ft. 



