BLACKBURN AND SHARP—On some New Species and Genera of Coleoptera. 171 
Proterhinus tarsalis, n. sp.—Sat elongatus; crebre punctatus; nigricans, 
albido-maculatus, tarsis rufis ; prothorace transverso, rotundato ; elytris setis longis 
vestitis, humeris vix acutis; antennarum articulo secundo vix elongato. Long. 
23-31 m.m. 
The colouring of this species appears to be constant, and differs from that of 
every other known to me in the genus. The insect is entirely of a smoky black 
colour, except that there are a few golden brown scales on the thorax, and some 
(usually about eight) ill-defined round spots of a whitish colour, inclining to golden 
brown, on each of the elytra, and that the tarsi are clear red. It is allied to P. 
simplex, Sh., from which and other allied species it differs (apart from size, 
colour, and other respects) in having the second joint of the antennz scarcely 
longer than wide, and the first joint scarcely shorter in the é than in the ¢. 
From C. debilis, Sh., it differs in having larger eyes, more pronounced club of 
antennee, &c., as well as in size and colour. 
A short series of this insect was obtained by beating branches of trees on Mauna Loa, Hawaii, at an 
elevation of about 6000 feet. 
Uh 18% 
Proterhinus robustus, n. sp.—Rufo-brunneus; albido-squamulatus ; setis erectis 
minus sparsim vestitus; prothorace vix transverso, antice posticeque parum angus- 
tato nec constricto, lateribus leviter rotundatis; angulis humeralibus haud pro- 
minulis; antennarum articulo primo quam secundo duplo majore, hujus longi- 
tudine latitudinem distincte superante. Long. 33 m.m. 
This species belongs, I think, to the P. simplex group; it is, however, a 
stouter-looking insect than the others. The elytra are broadest at the base, and 
not at all parallel, with indistinct humeral angles, and gently rounded sides. 
The elongation of the basal joint of the antenne (in the female at least) is a con- 
spicuous character. 
A single specimen (female) was taken from the bark of a tree on the Waianae Mountains, Oahu. 
Be 
Proterhinus ineptus, n. sp.—Parum elongatus, nigricans, antennis tibiis tar- 
sisque rufis, elytris ferrugineis, vage nigro-signatis; supra parum dense vestitus, 
setulisque erectis parum conspicuis; prothorace lateribus rotundatis, anterius 
parum constricto, dorso indistincte tri-impresso; elytris inzequalibus, humeris 
acutis. Long. 24 m.m. 
Closely allied to P. vestitus, but with the thorax more globose and less im- 
pressed, with the shoulders of the elytra more acute, and the sete shorter. Also 
very similar to P. integer, but with smaller eyes, and shorter antennz, and less 
