236 PHALENAs 
8—i0. PHavmna. Spec. @o7 1. 
Remarks. ‘This is the mosit extensive genus 
among insects. ‘The larva are mostly hairy, and 
in many other particulars resemble those of the 
butterfly. They generally occupy a silky bag, 
when in the crysalis state, which they previously 
prepare froma tenaceous fluid contained in two 
pouches, placed along the back, beneath the stom- 
ach. ‘This fluid they spin into very fine threads, 
by means of a tube placed behind the mouth. 
These constructions are remarkable in some in- 
stances, for their apparent artificial formation, and 
in some, (as the silk worm,) for their great utility. 
See Gore’s Blumenbach, p. 207. ‘The larva of 
this genus prey voraciously on the leaves of plants, 
and are thus more injurious to fruit trees, than any 
ther genus. All the species fly in the evening 
or night only. | 
The following are the divisions into which the 
species of this genus are distributed. Somealtera- 
tions of the Linean divisions are here adopted 
from the improvements of Gmelin, Fabricius, &c. 
4. Div. Bombyx, anteune filiform ; feelers two, 
compressed, reflected ; tongue short, membrana- 
ceous, obtuse, bifid; tarva 16-feoted, often hairy 3 
chrysalis pointed at ihe tip. Wings either, 1. ex- 
panded ; 2. reversed 3 3. deflected ; 4. incumbent ; 
or 5. convolute. A distinct genus, Bombyx, is 
made of this section. It includes about 280 spe- 
cles. 
See MS. P. 
2. Div. GeomeTra, antenne filiform ; feelers 
eylindrical ; tongue projected, membranaceous, | 
setaceous, bifid ; larva 8 to 10-footed, 6 of which 
