27 
They are formed into two families ; those which have the elytra 
shorter than the wings and abdomen ; and the others, whose elytra 
are as long as the body, narrowing 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 larvæ at present are unknown. 
GENUS XIX. LAMPYRIS. Tab. 7. 
Linn . Syst. Nat. page 643. 
The antennas 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 larvæ of the Lampy rides that are known, are in form 
exactly similar to the female, and feed on leaves. 
The insect so universally known under the appellation of glow- 
worm , is of this genus. 
GENUS XX. GANTHARIS. Tab. 29. 
Linn. Syst. J\ r at. page 647. 
The antennae of this genus are setaceous. 
