r igo ] 
fcribed, I fliall decline taking into any further con- 
lide ration. 
The females have at firfl altogether the fame ap- 
pearance with thofe of the former generations ; but 
in a few days their colour changes from a green to a 
yellow, which is gradually converted into an orange- 
colour, before they come to their full growth. They 
differ likewife in another refped, at leall from thofe 
which occur in the fummer, that all thofe yellow 
females are without wings. The male infects are 
however ftill more remarkable; their outward appear- 
ance readily diflinguilhing them, from the females 
of this and all other generations. When firfl pro- 
duced, they are not of a green colour like the reft, 
but of a reddifli brown ; and have afterwards, when 
they begin to thicken about the breaft, a dark line 
along the middle of the back. Thefe male infedfs 
come to their full growth in about three weeks 
time, and then caft off their laft covering ; the whole 
infedl being after this operation of a bright yellow, 
the wings only excepted. But they foon change to 
a darker yellow, and in a few hours to a very dark 
brown ; if we except the body, which is fomething 
lighter coloured, and has a reddifh caft. They are 
all of the winged fort ; and the wings, which are 
white at firft, loon become tranfparent, and at length 
appear like very fine black gauze. 
The males no fooncr come to maturity, than they 
copulate with the females^ in which adl they are 
readily difcovered, as they remain in conjundlion for 
a conliderable time, and are not eafily difturbed. 
The commerce between them continues the whole 
month of Odtober, and may be obferved' at ail times 
