216 
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 Ibidion in the Cerambycide section of Longicornes. 
Omosarotes singularis, Pascoe. 
Omosarotes singularis, Pasc. Journal of Eiitomol. vol. i. p. 131, 
pi. 8. f. 5. 
O. elongatus, niger, antennis pedib usque nigro hirsutis ; capita et 
thorace subtiliter strigosis, hoc antice griseo-sericeo ; elytris pube 
tenuissima griseo-sericea vestitis, lateribus fasciaque pone medium 
nigerrimis, pedibus piceo-rufis. Long. 4| lin. 
I met with two examples of this insect, namely on a slender 
branch of a tree in the forest at S. Paulo, Upper Amazons. 
Genus Scopadus, Pascoe. 
Pascoe, Trans. Ent. Soc. n. s. vol. iv. p. 100. 
This genus resembles Omosarotes in its elongate shape and 
Cerambycideous aspect; but its antennje are much elongated, 
filiform to their apex, and nearly naked. The groove of the an- 
terior tibise, which is the invariable character of the Lamiaires, is 
scarcely perceptible, so that, were it not for the vertical face, 
square muzzle, and pointed palpi, it might be doubted whether 
the genus would not have its true place amongst the Ceramby- 
cidse ; the groove, however, on careful examination, is seen to be 
present. The legs are elongated ; the thighs very abruptly club- 
bed, the tibise slender and linear, and the tarsi short, with the 
basal joint triangular. The anterior and middle coxse are glo- 
bular, the sterna very narrow, and the anterior sockets angulated 
on their outer side. As in Omosarotes, the elytra have raised 
centro-basal ridges surmounted by a pencil of hairs; on the 
outer side of each ridge lies an oblique linear depression, ex- 
tending from the inner side of the prominent shoulder to the 
middle of the suture. 
Scopadus ciliatus, Pascoe. 
Scopadus ciliatus, Pasc. Trans. Ent. Soc. n. s. iv. p. 100, pi. 22. f. 5. 
Sc. elongato-oblongus, rufescens, capite et pronoto iiigris opacis, 
elytris dimidio apicali purpureo-nigro velutino ; thorace supra con- 
vexo tuberose lateribus utrinque tuberculo acuto armatis. Long. 
5 lin. 
On stem of dead tree, Ega ; three examples. 
