Coleoptera from the Hawaiian Islands. 519 
Xyletobius oculatus, n. s. 
Aneustulus, pube subtilissima cinerescente vestitus, 
niger, antennis elongatis ; elytris leviter striatis, parum 
inequalibus. Long. corp. 23, antenn. 24 mm. 
The antenne are very elongate, being but little shorter 
than the whole length of the body; from the 4th joint 
onwards they are distinctly serrate internally, but each » 
joint becomes longer and more slender than its prede- 
cessor, so that the serration of the three or four terminal 
joints is very obscure. The head is very obsoletely 
granulate. The front angles of the thorax are greatly 
deflexed ; its surface is dull and very finely tomentose, 
with a very pale minute pubescence, and is almost with- 
out sculpture. The elytra are rather finely striate, and 
only indistinctly transversely impressed in front of the 
middle, and the striz but little distorted ; they bear a 
very fine ashy tomentum ; just beyond the middle of 
each wing-case this tomentum becomes shghtly flavescent. 
The legs, including the tarsi, are quite black. The middle 
cox nearly contiguous. 
Mr. Blackburn found this species on Mauna Loa, 
Hawai, at an elevation of about 4000 feet, by beating 
dead branches of trees. 
I subjoin the characters, so far as I have been able to 
ascertain them, of these three species, for which I have 
made a new generic name. 
Antenne 11-jointed, elongate and slender, only very 
feebly serrate internally, the apical three joints not 
strikingly different from the preceding ones. Head 
small, only about half as broad as the prothorax, not 
very large, but strongly prominent. Terminal joint of 
the four palpi slightly dilated, the apex truncate, the 
outer apical angle slightly prolonged, so as to be minutely 
acute. Thorax transverse, its front angles but little 
prolonged downwards, its sides strongly trenchant ; pro- 
sternum but little modified for the inflection and pro- 
tection of the head; the front coxee contiguous. Meso- 
sternum ordinary, middle coxe but little separated. Tibize 
but little elongate, slender, not carinate or angulate. 
Tarsi getting stouter towards the apex, so that the apical 
joint is decidedly broader than the basal one ; this latter 
at least twice as long as the second joint. 
