BLAcKBuRN AND Suarp—On some New Species and Genera of Coleoptera. 173 
large, moderately convex. Thorax just as long as broad, the lateral angle formed 
near the front by the anterior constriction, very abrupt, the surface but little im- 
pressed, the anterior impression forming a vague channel, deepest in front, the 
lateral ones slightly marked, without squamosity, but with depressed sete, which 
somewhat obscure its rugose sculpture. LElytra elongate, but little dilated behind, 
humeral angles distinctly prolonged, the surface coarsely punctate, and bearing 
short setee, which do not form patches ; erect setee scarcely evident; legs red. 
Perhaps more allied to P. vestitus than to any other species, but readily dis- 
tinguished by the numerous differences in all points. 
Found on the mountains of Lanai. 
Das: 
Proterhinus longicornis, n. sp.—Elongatus, angustulus, irregulariter squamosus, 
setulisque erectis conspicuis ornatus, nigricans, tarsis rufis, antennis versus basin 
rufescentibus, elytris rufo-variegatis; oculis sat magnis, a thorace remotis; hoe 
elongato, lateribus rotundatis, anterius minus abrupte constricto, parum distincte 
tri-impresso; elytrorum humeris acutis. Long. 23—3 m.m. 
Male ; antenne elongate three-fourths of the length of the body ; second joint 
rather elongate, more than half as long as the third; eighth joint remarkably 
elongate; club very slender and elongate. Head elongate, much dilated above 
the insertion of the antenne ; eyes rather large, and very distant from the front 
margin of the thorax: this latter very coarsely and densely punctate, its impressions 
indistinct. Tarsal lobes not large. The female differs, by its shorter antenne, 
the eighth joint of which is not elongate, but the club is comparatively abrupt ; 
the eyes are rather smaller but more prominent and less remote from the thorax. 
The species is allied to P. collaris by the peculiar form of the male head and 
antennz ; but it is abundantly distinct by its narrower more elongate form, 
longer antennze, and less globular thorax, and the squamosity of the surface is not 
so condensed into patches. 
This is also from the mountains of Lanai. 
D.S. 
Proterhinus insignis, n. sp.—Major, piceus, supra fulvo-ferrugineus, fere 
equaliter tomentosus, setulisque erectis conspicue vestitus, elytris parum maculatis, 
antennis pedibusque rufis; antennis elongatis, gracilibus, articulo basali maxime 
elongato ; oculis perprominulis ; prothorace parum distincte trifoveolato, elytrisque 
parum ineequalibus. Long. ¢ 44, ? cum rost.4m.m. (Plate v., ff. 44, 45). 
One of the most remarkable species, with excessive sexual disparity, but with 
the great elongation of the basal joint of the antennze common to both sexes, and 
in both sexes the antennze are much clothed with erect hair, which is longer and 
denser on the inner face of the joints in the male. In this latter sex the antenne 
