Coleoptcra from the Ilaioaiian Islands. 51 



versus apicem, abdomiuis apice, antennisque extrorsum 

 fuscis; capite brevi, crebre punctato, clypeo nitido, fere 

 impunctato, mandibulis sat elongatis ; thorace elytrisque 

 sat fortiter punctatis, illo medio pariim distincte trisulcato. 

 Long. 2^ — 3 mm. 



Antenna moderately long, blackisli, yellow at tlie base, 

 the penultimate five joints transverse. Head blackish, 

 shining, rather strongly punctured, the punctuation in 

 the male strigose, the clypeus is very distinctly marked 

 off, and is smooth and shining. Thorax strongly trans- 

 verse, reddish-yellow, shining, rather strongly punctured, 

 the three grooves along the middle approximate and 

 rather indistinct. Elytra a good deal longer than the 

 thorax, blackish towards the extremity, reddish at the 

 base, rather coarsely strigose-punctate, somewhat shining. 

 Hind body almost without sculpture. 



This species is closely allied to O. rufus, Kr. (Ceylon), 

 but that species is entirely reddish-yellow, and has the 

 antennae rather shorter, and with a thicker club. 



Occurs in the low grounds of Oahu, but Mr. Black- 

 burn does not recollect seeing it in the other islands. I 

 believe it to be an introduced species. 



TrogopMceus senilis, n. sp. Elongatus, angustulus, 

 fiisco-niger, antennis rufis, pedibus testaceis, omnium 

 densissime subtilissimeque punctatus brevissimeque pube- 

 scens, opacus ; prothorace angulis anterioribus, subpromi- 

 nulis, acutis, dorso obsolete bi-impresso, lateribus versus 

 basin fortiter angustatis. Long. 3 mm. 



About as long as T. bilineatus, Steph., but narrower. 

 Antennas rather long and stout, of a reddish colour, a 

 little thickened towards the apex, but without club, none 

 of the joints transverse. Head rather small, narrower 

 than the thorax, palpi reddish. Thorax a little narrower 

 than the elytra, nearly as long as broad, the front angles 

 distinct and acute, from the front angles to about one- 

 third of the distance towards the base, the width consi- 

 derably increases, and then rapidly diminishes towards 

 the base, so that the sides in front of the middle have a 

 subangulate appearance ; the disc is scarcely visibly bi- 

 impressed, and the surface is quite dull, on account of 

 an extremely dense, fine, invisible punctuation. Elytra 

 rather short, but a little longer than the thorax, very 

 densely and finely punctured, but the punctuation not 



E 2 



