BLACKBURN AND SHARP—On some New Species and Genera of Coleoptera. 177 
and outstanding, and the apex of the rostrum is considerably broader than the 
part above it; the scrobes are very short, confined in fact to the length of the 
outstanding pterygia: the mentum is broad and quite flat, and is separated from 
the sides of the head by a broad cleft, so that in one of the two individuals before 
me (the male) the maxille are concealed. I have associated with this remarkable 
species a second of very different appearance, resembling rather a Peritelus than 
an Otiorhynchus, and having much shorter antenne and comparatively more 
widely separated hind coxz, but which otherwise is not, so far as I can detect, 
distinguished by any important structural character, so that I have not thought it 
proper at present to treat it as a distinct genus. 
D.S8. 
Rhyncogonus blackburni, n. sp.—Nigrinus, parum nitidus, subplanatus, 
supra fere sine pubescentia; capite strigoso, prothorace conico-cylindrico, dense 
punctato, elytris seriatim punctatis, apice acuminato. Long. # ine. rost. 123, 
? 17 m.m. (Plate v., f. 28). 
Antennz slender and elongate; scape reaching as far back as half the length of 
the thorax; funiculus not so long as the scape; club very slender and elongate, 
very little thicker than the funiculus, conspicuously three-joimted. Eyes nearly 
as remote from the prothorax as from the insertion of the antenne. Thorax 
about as long as broad, much narrower than the elytra, distinctly narrowed in 
front, densely and rather coarsely punctate. Llytra rather flat, broad, with 
sharply and abruptly inflexed pseud-epipleure, and internal to these, with about a 
dozen rather irregular series of punctures. 
The sexual characters, if I interpret them correctly from the two individuals 
before me, are very remarkable: the male not half the bulk of the female, and the 
ridge near the side of the elytra, marking off the pseud-epipleurz, is less definite, 
and is in fact quite wanting at the shoulders, while in the female it is definite and 
well-elevated from base to apex; the apical segments of the hind-body are scarcely 
so long, and the basal segments are a little impressed, and the maxillary palpi 
(and even the extremities of the labial) are exposed. In both sexes the apical 
ventral segments are densely pubescent, more especially the apical one. 
Mr. Blackburn informs me that this species is found very rarely, by beating trees on the mountains 
near Honolulu. 
D.S. 
Rhyncogonus vestitus, n. sp.—Fusco-niger, griseo-squamosus, _latiusculus, 
parum conyexus, prothorace elytris multo angustiore, his lateribus rotundatis, 
pseud-epipleuris latis, tantum ad humeros carinatis. Long. ine. rost. 8-9 m.m. 
Antenne moderately long and stout; scape not extending so far back as half 
the length of thorax. Eyes very prominent. Thorax not quite so long as broad, 
rather rounded at the sides, and distinctly narrower in front than at the base; it as 
2B2 
