hairs of a gold colour. 
The 
fiance which looks like gold, on account of the 
brightnefs of the uvea, which is feen through. 
The thorax andabdomen, are black; but they are 
covered with hairs of a golden yellow. The 
legs and horns confift of a black, bony, or horny 
fubftance, and are adorned alfo with fcales and 
The wings look as if 
they had been flightly wathed over with a deep 
red blood-coloured paint; and they haye, befides, 
four great and four fmall {pots of different forms. 
Near the thorax, the upper wings appear moft 
elegantly fprinkled and waved with glittering 
gold; and thelower wings near the belly, are 
covered with hair of a gold colour. The {paces 
Gi A 
EG £.S$, DO; RivY. 4; 08 
Peps Gh Code. 8. at 
between the {pots cf the upper wings inclines - 
to yellow; but near the third pair of thof2 {pots 
which lie towards the edges, are two other marks 
of afnowy white. The borders of the wings are 
elegantly indented, and fet off with four princi- 
pal colours, a black, a sky-blue, a pe.ch-bloffom 
colour, anda yellowifh red. The sky-blue, by 
bending its courfe upon the black, which ferves’ 
as a ground to the other colours, forms a beau:i- 
ful crefcent; whilitthe other colours, making fo 
many circles, feparated by the black ground, 
heighten the elegance of the difpofition in a very 
delicate manner, 
Pap ddl. 
Containing a defcription of the internal parts of the male and female Butterfly, 
defcribed in the preceding chapters. 
AVING defcribed the external and in- 
ternal parts of the Caterpillar, and of the 
Chryfalis, and alfo fome of the Butterfly’s exter- 
nal ornaments; my next task is to defcribe its 
internal ftructure ; though I cannot fay I have 
fucceeded. perfectly to my wifhes, in examining 
and inveftigating them one by one, as I propofed 
to myfelf. For, as I did not begin to diffe& 
the infect in this ftate, till towards the end of 
Autumn, and had fuch only to difleét as had 
been changed to Butterflies within doors, and 
under my infpetion, and had not acquired their 
full perfection; for this kind of Butterfly out- 
lives the year in which it makes its firft appear- 
ance I could not therefore obferve all its parts 
fo accurately as I wifhed: befides, there was no 
bright weather during the time my examination 
lafted ; but the air was continually darkened 
with rain and clouds. However, fome things 
in my obfervations appeared worthy of notice, 
which I fhall now briefly relate. 
On opening the Butterfly’s back, there imme- 
diately appear in the thorax, fome little wrinkled 
veffels, Tab. XXXVI. Fig. 1. a2, which lie near 
the gullet, and have their infertions in the fore- 
part of the body. I take thefé little veffels to be 
the fame with thofe already reprefented in the 
_vth Figure of Table XXXIV. Their beginning is 
a flender little channel, 46, which divides into 
two fine tubes; and thefe tubes again dilat- 
ing themfelves, c, terminate at laft about the 
beginning of the ftomach, d; and they are fo 
firmly united and faftened to it, by means of 
the fat and mufcles, that I have not yet by any 
means been able to loofen them from that part, 
or to trace them higher. What greatly increafes 
the difficulty is, that the beginning of the fto- 
mach itfelf, is here very ftrongly connected. 
What the office of thofe veffels is, and whether 
they may not be the falival duéts, I cannot take 
_ upon me to determine; for I know not how they 
terminate in front, or whether or no they have 
a communication with the trunk, e e. 
Amongft the curled veffels I have been treat- 
ing of, appears the gullet, f, which dividing in 
the upper part, near the root of the trunk, into 
two little tubes, conveys to the ftomach the 
juices fucked in by that organ. From the lower 
part of the gullet near the {tomach, there iffues 
a fhort and fmall channel, g, which ends in a 
little flender bag, b, ‘This bag is no other than 
an air-bladder, into which the air ruthes, whilft 
the infects food is making its way to the ftomach. 
This bladder is endued with a very confiderable 
periftaltick motion: it is almoft always found in 
the Butterfly’s back, placed over the ftomach. 
In the Chryfalis, I found it full of a deep red 
liquid, as has been already obferved. 
The ftomach itfelf, 77, is ftrangely altered in 
‘regard to fhape, from what it was in the Cater- 
pillar, as before reprefented in the ivth Figure of 
Tab. XXXVI.. It is now entirely fwoln and tu- 
berous, and it refembles an inflated large gut; fo 
that, on account of its many folds, hollows, 
and wrinkles, it exhibits a very pleafing fight in 
the hinder part. It fo much refembles one of the 
{maller inteftines, 2, full of moft delicate folds, that 
I cannot take upon me to determine whether or 
not it ought to be confidered as fuch, rather than 
as a portion of the ftomach Under the pylorus, 
appear fix inteflina coeca, or vafa varicofa, /////, 
which are much more flender in this fate, than 
they were in the Caterpillar, and of a perfectly 
different form. They are likewife feparated here 
from the ftomach, to which, in the Caterpillar, 
they always clofely adhered by means of the 
pulionary tubes, I have not as yet been able . 
to find out where and haw they terminate in 
the Butterfly, fo that I fhall only reprefént them 
here as they appeared to me on this diffleCtion. - 
Under thefe lie the {maller intefines, m m, which 
are tran{parent and full of a globular fubftance, A 
little lower the gut widens confiderably, fo as to: 
form the cloaca, 2; then it contraéts again, to 
dilate a fecond time into a leffér finus, 0, in which 
it terminates. Next follows the firaight gut, 2, 
terminating in a ring, of a fubftance between 
bone and horn, which forms the anus, g, 18 COm 
vered with hair, and drawn up within the. ab- 
domen, At the fides of the anus appear its 
ey proper 
