194 Mr. H. W. Bates on the Longicorn Coleoptera 
second and third joints elongated and equalling in length the 
succeeding joints taken together ‘Thorax sooty black, shining, 
coarsely punctured, and clothed with long blackish hairs. Elytra 
elongate-oblong, rounded at the tip, coarsely punctured, the 
punctures becoming shallower towards the apex, sooty black, 
shining, clothed with long blackish hairs. Body beneath punc- 
tured, black, clothed with dark-greyish hairs. Legs black, thickly 
clothed with dark hairs. 
S. Paulo, Upper Amazons. 
Genus Omosarortes, Pascoe. 
Pascoe, Journal of Entomology, vol. 1. p. 131. 
The remarkable insect which constitutes this genus is much 
more elongated in form even than the preceding (Hriopsilus) ; yet 
its essential characters show that its true place is amongst the 
series of genera composing the Exocentrine group—a position 
already accorded to it by Mr. Pascoe (Trans. Ent. Soc. 3rd ser. 
vol. ii. p. 55). In the form of the head it does not differ much 
from Eriopsilus or even Ezocentrus, the face being moderately 
broad and the muzzle slightly dilated and quadrate below the 
eyes ; but the antenniferous tubercles are more conspicuously de- 
veloped and the vertex depressed between them. The antenne 
are nearly as long as the body ; the basal joint forms a smooth, 
elongate-pyriform club, the third and fourth joints are much 
elongated, and the succeeding joints abbreviated, the fifth being 
only half the length of the fourth; but what is remarkable in 
them is their clothing, the long fine hairs which exist scantily 
on the joints bemg changed into very long and rather stiff bris- 
tles at the apices of the joints; the third joint is thickened to- 
wards the apex, beneath. The thorax is oblong, very convex 
and almost gibbous in the middle, and constricted before and 
behind ; in the middle of each side is a very distinct and sharp 
tubercle. The elytra are scarcely longer than the head and 
thorax taken together, and are remarkable for a very long pencil 
of hairs surmounting the prominent centro-basal ridges, besides 
an acute carina extending from the prominent shoulders half- 
way down the sides of each elytron, The legs are rather elon- 
gated, the thighs clavate, and the tarsi very short. The insect 
in general form and colour resembles certain species of Mallocera 
or Jéidion in the Cerambycide section of Longicornes. 
Omosarotes singularis, Pascoe. 
Omosarotes singularis, Pase. Journal of Entomol. vol. i. p. 131, pl. 8. f. 5. 
O. elongatus, niger, autennis pedibusque nigro hirsutis ; capite et 
thorace subtiliter strigosis, hoe antice griseo-sericeo ; elytris pube 
ee 
