88 The BO: OFR” “of 
falis, viewed through a microfcope, plainly ex- 
hibited the form of the Butterfly, to which it was 
thereafter to be changed. It was oblong, fome- 
what flatted and broad on the fore part, where it 
terminated in a point, Tab. XLIV. Fig. xix. a, 
whilft its hinder part grew gradually narrower, fo 
as torefemble a pyramid or cone, 6. Each fide 
of the body was covered with a few, very deli- 
cate hairs, cc. Its furface was of a pale brown 
colour. ‘The eyes appeared on the head, dd, 
and under them a double trunk e. A little lower 
down, and juft by this, the firft and fecond pairs 
of legs were feen, ff. ‘The antenne or horns, 
which were of an extraordinary length, extended 
from the eyes to the very extremities of the two 
firft pairs of legs, gggg. Near thefe lay the 
wings, 66, ‘The hinder pair of legs was placed 
between the antenne, and firetched beyond the 
extremities of thefe parts, 7. The body confifted 
of feveral rings, &. ‘This Chryfalis looked as 
if it had caft its {kin but a few days, and it 
moved its tail very vigoroufly, making ufeof it to 
turn itfelf, and indeed to move from one place 
to another. 
On the 26th of Auguft, two of thefe Aurelie 
yielded two very elegant Butterflies, lefs than _ 
Moths of cloaths; but like them in colouring 
and ornaments, as may be feen by the draw- 
ing I have given of them, where they are re- 
prefented of their natural fize, Fig. xx. It 
is hardly poflible to conceive a more beau- 
tiful little animal, than what this Butterfly ap- 
peared to be, when viewed with: a microfcope, 
Fig. xx1.. It confifted of a head, thorax, and 
abdomen. ‘The head was furnifhed with two 
antenne or horns, aa, and a fhort and crooked 
double probofcis or trunk, 4. From the fhoul- 
der blades of the thorax {pring four wings, 
and from the under part fix legs. The wings 
were partly of a mere membranaceous {ub- 
ftance, and partly compofed of delicate fea- 
thers, or fcaly hairs. The upper pair fhone 
and glittered moft glorioufly with crefcents of 
gold, filver, and brown, cc, furrounded by 
borders of a delicate black: befides this, they 
had a black fpot at the extremity of each. 
StheO OPN DORR 
ae HE 3oth day of Auguft I found, between 
the fame coats of Alder-leaves, a flattith 
Worm, of the fize and form reprefented at 
the letter d, Fig. xv11l. as it appeared on re- 
moving from it a part of the coat belonging 
to the leaf on which it had fed.’ The body 
_ was oblong, and fomewhat broader about the 
thorax than at the belly or tail. The head 
was large, of a pale brown colour, fomewhat 
. flattith or deprefied; and on its fore part fur- 
nifhed with two eyes, and a pair of fharp teeth. 
From each fide of the lower part of the thorax 
there arofe three legs.. In the tranfparent body 
there appeared a little green ftreak, produced 
by the Worm’s food. Counting the head and 
tail, this Worm confifted of twelve rings. 
' J difcovered alfo, that this infect had caft a 
fkin, in the fame place where I found it. The 
N AMP Re Et ot 
Moreover, thefe extremities were edged with 
little feathers, which made them look like a 
creft, when they lay clofe upon the body, one 
folded over the other. The lower wings are 
likewife in a great meafure covered with fea- 
thers, dd, and are of a pale colour, and fil- 
very brightnefs. Along the middle of the 
wings there runs 2 membranaceous little tem, 
from which iffue the feathers that, in a man- 
ner, compofe them; and even this {tem has, 
as it were, its own {caly feathers to defend and 
adorn it. 
All the ornaments beftowed with fach pro- 
fufion on the wings of this little infect, confit 
in reality of feathered fcales of different lengths, 
and various diverfified colours; and they are 
divided, more or lefs, into lateral branches, 
like the feathers of the larger winged animals. 
The colours are more lively or faint, according 
as the fcales forming them lie together in 
greater or fmaller quantities; and from the 
fame conftru@tion, and contrivance alone, re- 
fults all that ftriking variety in the wings of 
Butterflies: for, on rubbing of their feathers, 
they appear entirely even and plain, like the 
furfaces of all other membranes. 
The legs of this Butterfly are entirely co- 
vered with the fame kind of plumage, and 
they are divided into joints: every extreme or 
loweft joint is armed with two little claws: 
The hinder legs have, befides thefe, three little 
white prickles, or fpurs, Tab. XLIV. ig ets 
ee. ‘The body is divided into rings, and co- 
vered likewife with feathered {cales of a bright 
filver whitenefs. This little animal, being put 
in a box that had ferved to keep Brazil-inuff, 
began immediately to tremble, and in lefs than 
two minutes expired in a convulfion that feized 
every limb, As yet Ihave made no more ob- 
fervations of this infect. The furprifing man- 
ner wherein the Worm, from which it is pro- 
duced, neftles and feeds between the coats of 
the Alder-leaf, will, I hope, alone be judged 
fufficient to recommend to the curious what I 
have faid upon this occafion. 
SED Re eA COUN: 
internal fubftance of the leaves, where it re- 
fides, ferves it for food ; and it had accordingly 
gnawed this fubftance away, without offering 
to touch the adjacent coats, into a great many 
windings and turnings. As this parenchyma, 
or pulpy matter, had been but lately devoured, 
the leaf, even in the {pot where the devatta- 
tion had been made, ftill retained its verdure ; 
but foon after it withered, and changed to the 
colour of the leaves of the Alder that fall in 
Autumn. The external coat of the leaf, in 
which the ribs appeared, was very ftrong and 
thick; but the other fide, or internal coat, was 
very thin and delicate. The excrements, which 
"were at firft green, and then grew black, rolled 
freely backwards and forwards within thefe 7 
two coats. I could not difcover in thefe leaves 
the fmalleft opening, by which the enclofed 
ect Worm 
Bi) 21 
