238 
MOTH. 
often oi very elegant colours. Of this tribe is the 
PhalcenciFadella: it' is of a pearly white colour, with 
very numerous black spots: its caterpillar is gre- 
garious, appearing in great quantities on various 
sorts of fruit-trees during the decline of summer, 
and committing great ravages on the leaves: these 
caterpillars inhabit a common web, and usually 
move in large groupes together: their colour is a 
pale greyish yellow, with numerous black spots: 
each caterpillar at the time of its change to chry- 
salis, envelops itself in a distinct oval web wdth 
pointed extremities, and many of these are sta- 
tioned close to each other, hanging, in a per- 
pendicular direction from the internal roof of the 
general enclosing web: the chrysalis is blackish, 
and the moth appears in the month of September. 
To this division also belong the Moths em- 
phatically so called, or Cloth-Moths. Of these 
the principal is the Phalcena vestianellay which, in 
its caterpillar state, is very destructive to woollen 
cloths, the substance of which it devours, forming 
for itself a tubular case wdth open extremities, 
and generally approaching to the colour of the 
cloth on which it is nourished. This mischiev- 
ous species changes into a chrysalis in April, and 
the moth, which is universally knowui, appears 
chiefly in May and June. 
In the last division, called AlucitcOj is one of the 
most elegant of the Insect Tribe, though not dis- 
tinguished either by large size or lively colours. 
It is a small moth, of a snowy whiteness, and, at 
first view', catches the attention of the observer by 
