C0LE0PTEE0T7S INSECTS. 
247 
tice has been noticed in a large species of Oncyde - 
res found in Brazil ; and it is conjectured that simi- 
lar observations will soon be made in relation to 
others of the long-horned beetles. The larva of 
F. cervicomis is said to live in the wood of the 
Gossampinus, and is frequently used as an article 
of food. 
PRIONUS CORTICINUS. 
PLATE XXIV. Fig. 1. 
The body of this species is rather depressed. The 
head and antennae are brown, the former having a 
deep furrow between the eyes, and a dense tuft of 
hair in front covering the base of the mandibles. 
The thorax is brown, having a few tubercles in the 
middle, and several spines on the sides, of which 
that next the hinder angle is longest. The elytra 
are elongate, and nearly of equal width throughout 
their whole length ; they are of a brown colour, and 
have a small spine at the apex of each. The un- 
der side of the body, and the legs, are brown. It 
is a native of Cayenne. 
The tribe of Cerambycidce bears a considerable 
resemblance to the preceding in the general ap- 
pearance of the body; but they differ in having 
mandibles of ordinary size, and nearly alike in the 
two sexes. The eyes are notched on the inner side, 
and partly surround the base of the antennae ; — and 
