106 
vLEC^URE EX. 
■Oil: We now pass to^the most splendid : of all the 
ordere. of insects, '^entitled Lepidoptera or scaly- 
winged bisects, b it consists of all the ^ Moth and 
Butterfly tribes or > the Papilionaceous insects, as 
they are often called. The powder or down on 
the wings of these insects has been often eon- 
psidered naturalists as composed of a kind : of 
.cfeathcrsj but in reality it is composed-ot’ a?kind 
of very minute scales, which differ -in siee and 
form in the different species, as well as on . the 
different parts of the same species their general 
appearance is that of an abrupt oyaf, terminating 
in several projecting points at the abrupt orebroad 
end, and fastened by a small quill or point at the 
root or opposite end to the membrane of the 
wing. Tiie Lepidopterous insects, or the Butterfly 
and Moth tribe are divided by Linnagiis into three 
distinct genera or sets, under the titles of Papilio, 
•. SphiliT, and Phalccna, or Butterfly, Sphinx, and 
Moth. Tliey all proceed from Caterpillars, which 
afterwards change into a chrysalis, out of which, 
after a certain period, emerges the complete 
insect. 
This ciiange is so familiarly known as to su- 
, - persf.fle tlie ne<'es.sity. of any particular description 
