The musk beetle, or goat-chaffer, frequently found in the willow,
is a Cerambyx. ,.
The larvae of this'genus subsist on the inner part of the bark of
trees, and in which situation they mostly undergo their transformations.
GENUS XVII. LEPTURA. Tab. 27 and 28.
Linn. Syst. Nat. page 637.
The antennae of this genus are setaceous, or taper gradually to
their points.
The elytra diminish in breadth towards their extremity.
The thorax is of a globular and slender make.
There are two sections or families of the Leptura:
1. Those whose thorax is something oblong, but broader at its
base than at the head ; and whose elytra are truncated, or cut off
in a direct line at their extremity.
2. Those with the thorax of a globular form, with their elytra
obtuse at their extremity.
Their larvae are found in similar situations with those of the preceding
genus: and the insect, both in figure and manners, is nearly
allied to the Cerambyx.
GENUS XVIII. NECYDALIS. Tab. 23.
Linn. Syst. Nat. page (AO.
Their antennae are setaceous, as in the Lepturae. The elytra are
either shorter than the abdomen; or narrower, and of equal length
to that part.
They are formed intOitWh familiesthose:which have the,elytra
shorter than the wings and abdomen; and the others, whose elytra
are, as long as the body, nartowihg to the extremity, which; is, a little
curved.
The insects of the first division of this genus, have this peculiarity
in their form ;—their wings being of equal length, and extended on
their bodies; whereas in all the other Coleopterous: tribes they are
considerably longer than the elytra, under which, except in flight,
they,are kept folded: their larva: at present are unknown.
GENUS XIX. LAMPYRIS. Tab. .7.
Linn. Syst. Nat. page 643.. ,
The antennae of this genus are/filiform: the elytra tender and
flexible.
The thorax is flat, and nearly orbicular, concealing the head. .
The ridges, or segments of the abdomen,, terminate on the sides
in papillae, or small appendices,, curving upwards .towards the
elytra, and in part cover each other. It is observed, most of the
females want wings.
The few larvae of the Lampyrides that are known, are in form
exactly similar to the female, and feed1 on leaves.
The insect so universally known under the appellation of glowworm,
is of this genus! .
GENUS XX. CANTHARIS. Tab. 29.
Linn, Syst. Nat. page 647.- •
The antennae of this genus are setaceous. ,