60 
suturali apicem baud attingente, altera lata marginali viridi-cyaneis. 
Long. 5 lin. $ 1 
Head and front tumid, very finely rugose-punctate ; occiput 
and thorax marked with fine transverse strise. The cheeks have 
a spot of brilliant green ; the rest of the head and thorax is of a 
dark- chestnut hue. The elytra are oblong, broadly rounded be- 
hind, even on their surface, and uniformly punctured ; their colour 
is red or orange-copper, with the exception of a narrow sutural 
stripe not extending to the apex, and a broader marginal one, 
which are of a greenish-blue lustre. The antennse and legs are 
of a brilliant violet copper hue ; the underside of the body is 
chestnut-red, and, with the legs and the other portions of the 
body, glabrous. 
I took one individual only of this extraordinary and beautiful 
Longicorn, flying over a mass of dried twigs in an open place 
in the forest at Ega. It has a near resemblance to the Hoplis- 
iocerus refulgens of Blanchard (Voy. de D^Orbigny, Ins. p. 210, 
pi. 22. f. 9) ; but that species is described as having the body, 
with head and thorax, of a green colour. D^Orbigny^s species 
was taken in the province of Santa Cruz de la Sierra (Bolivia), 
which region is connected with the Ega district by an uninter- 
rupted stretch of low wooded country over 14° of latitude. I 
have seen several undescribed and distinct .species of this genus 
in the collections of Count Mniszech at Paris and Messrs. Bowring 
and Pascoe in London. 
Genus Cyclopeplus, Thomson. 
Thomson, Classif. des Cerambyc. p. 32. 
In this genus, which is still more extraordinary in form than 
the preceding, the second and third antennal joints have an 
elongated and very slender spine at their tips ; but the fourth, 
instead of being armed with a spine, is dilated on one side of 
the apex into a large, thick, rounded knob, clothed with a vel- 
vety pile. The antennse differ also from those of the preceding- 
two genera in being greatly elongated and slender, in the 6 
being twice the length of the body. The basal joint is very thin 
at its origin, and is dilated beyond the middle into a pyriform 
club ; in length it departs from the almost universal rule in the 
subtribe Acanthoderitse by being as long as the third. The fore 
tarsi in the 6 are strongly dilated and fringed. 
Cyclopeplus Batesii, Thomson. 
Cyclopeplus Batesii, Thoms. Class, de C^-amb. p. 32. 
Ega, Upper Amazons, on dead branches on the margins of small 
tobacco plantations in the forest. The form of the insect is quite 
