LECTURE IX. 
10 ^' 
surface of the ground, into which they retire at the 
time of their approaching change 5 and after lying, 
in some species a few weeks, in others many 
months, the chrysalis, by the motions of the in- 
cluded animal, forces itself up to the surface, and 
gives birth to the Insect in its perfect form. The 
insects of this genus are often called Hawk-Moths 
by the English collectors. 
Tlie genus Phalcena or Moth is distinguished by 
sharp-pointed horns, which in many species are 
simple, and in many are beautifully barbed or 
feathered along the sides. This genus, like that 
of Butterfly, is so very numerous, that it is di- 
vided into many sections, instituted from the habit 
or general appearance of the animals, combined 
with some other circumstances. These I shall not 
particularize, but shall merely observe that of one 
or two of the leading species. Of all the European 
Moths by far the most magnificent is the Phalcena 
Junonia, a name which I have myself applied to 
it, in order the more effectually to separate it from 
some smaller species of similar appearance, with 
which Linnseus has conjoined it. It often mea- 
sures six inches in breadth, when expanded, and is 
found in Germany, France, and Italy, where its 
