Coleoptera from the Hawaiian Islands.. 583 
the base, but is distinctly marked with transverse 
carine ; the anterior of these forms an abrupt elevation ; 
behind it the three or four next carine are very obsolete 
and indistinct, and behind the latter three others strongly 
elevated but very irregular; on each side of the middle 
longitudinal elevation there is an obscure depression, 
limited by a slightly curved elevation. Elytra yellowish, 
darker across the middle, and very narrowly black along 
the suture, clothed with numerous pallid scales, which 
do not extend, however, to the sides, and are more dense 
on the dark middle portion than elsewhere, and behind 
this with an extension inwards of the marginal denuda- 
tion, nearly but not quite reaching the suture ; their sur- 
face, where not covered with scales, is shining, and at the 
lateral margin is almost destitute of puncturation. The 
legs are not so elongate as they are in the larger species of 
the genus; the basal portion of the four hinder femora 
is slender, and is pale yellow and bare of scales, but the 
outer portions of these femora are a good deal incrassate, 
and are darker in colour and dull, and bear numerous 
pallid sete or scales, the posterior one showing a con- 
spicuous broad denudated patch just before the apex ; 
the very slender yellow hind tibiz become infuscate at 
the apex; and the basal joint of the hind tarsus is very 
elongate ; it is also slightly curved, and of a paler tint 
than the apical joints. The breast is red, sparingly 
pubescent ; the basal ventral segments dark in colour, 
quite smooth and shining. 
The individual described is probably a male; its hind 
body is very much curved, but if straightened out would 
reach nearly (but not quite) to the apex of the elytra ; 
the antenne extend to about three-fourths of the lengths 
of the wing-cases. 
A single individual has been communicated by Mr. 
Blackburn as No. 415; he discovered :t with others on 
Haleakala, Maui, at an elevation of 4000 or 5000 feet, in 
April and May, 1880; the specimens were found on the 
trunk of a tree, species unknown, but which produces 
likewise Proterhinus Lecontet. 
Mr. Blackburn informs me that the female differs only 
by possessing a rather larger hind body, and slightly less 
elongate antenne. 
The species is allied to C. cristatus, but abundantly 
distinct. 
