74 PL ArT EC coy 
are hatched, the young begin to fpin a ftrong white web, which they 
enlarge as their fociety increafes; they remain together till they have 
devoured all the leaves of the plant on which they are hatched, or 
till they are arrived at full fize to change into the chryfalis ftate. 
Thefe Caterpillars are not very uncommon in fome parts of the 
country, efpecially in Kent. They are ready to change to chryfalis 
{tate latein June. “The Moth is not produced till April following. 
The trivial Englifh name, Egger Moth, is given to this, and two 
or three other Moths, from the fimilitude of the cafe in which the 
chryfalis is inclofed to the fhape of egg. 
PLATE 
