168 
NATTTEAL HISTOBY OF 
scales, which are either white or green. The head 
and central portion of the thorax are more or less 
green, but the scales are usually abraded, when they 
appear shining black; the sides of the latter are 
whitish. The elytra are marked with deep furrows, 
which approximate in pairs, and are more or less 
filled with white scales, making the surface appear 
as if lined with white. The under parts of the body, 
and the legs, are green, except where the black sur- 
face is exposed by the scales being rubbed off. 
Found in considerable abundance in Brazil, Cay- 
enne, and other parts of tropical America. It is 
almost always found on the trunks of trees, and falls 
to the ground when the hand is extended to seize 
it. 
ELATER LINEATUS. 
PLATE VII. Fig. 3. 
Fabricius Olivier, ii. No. 31, pi. 6, fig. 63.— Hemirhipua 
lineatus, Latreille , Dejean. 
The prevailing hue of this large and conspicuous 
insect is black, and the surface is covered with a 
fine pubescence, which gives it a silky gloss. The 
body is elongate, and rather obtuse at the two ex- 
tremities. The antennas are black. The head, 
outer margin of the thorax, and a line down the 
middle, are covered with silky pubescence of a red- 
dish colour. The elytra are striated, black, with a 
