The vo 1 8 7 OER Y" chat Nr Se Ger 8: 
as alfoin the future Beetle, than they were 
in the Coffus or Worm. Near thefe tubercles 
on each fide are likewife feen two other 
pair of {phericle fimilar tubercles ee, which 
iprung from the horns ff of the Coffus, and 
which are to be afterwards changed into the 
horns of the Beetle. ‘Two fuch little parts 
alfo, but more oval in their {hape, are obferved 
&g to be placed on each of the inward parts of 
the fides of the former tubercles: Thefe little 
parts have their origin from the jointed 44 
briftly hairs of the Coffus; and are likewife, 
though in another form, found afterwards in 
the Beetle. Three beautiful fhort tubercles 
prefent themfelves alfo in the middle 7, which 
upon changing the skin have likewife arifen 
from thofe particles, which may be feen in the 
head of the Worm under the letter 4. A little 
under thefe there appears alfo a larger fphericle 
divifion 4, which is horny or bony in the fu- 
ture Beetle, and forms the neck which is be- 
fet on each fide with hairs. Above this, near 
the horn, is feen on each fide the breaft bone m. 
A little lower on the breaft is feen the firft pair 
of legs 1,1, with their joints: and under thefe 
another pair 2,2. Then follow the zx fheaths 
or cafes of the wings on each fide, under which 
a patt of the covered wings oo is likewife pro- 
minent. Thefe wings appear at this time beau- 
tifully expanded by the force of the blood and 
air that are by degrees impelled inwardly, 
though they were before complicated, and ap- 
peared as if grown together under the skin of 
the Coflus. Below thefe is placed the laft 
pair of legs 3,3, which are in fome meafure co- 
. vered with the wings and their cafes. All thefe 
legs and their joints are ftretched out ftiff, and 
diftended with the fluids of the body and air, 
and thus remain without any motion fixed in 
the fame pofture, until the Nymph is changed 
into a Beetle, Finally, under the laft pair of 
legs may be feen the rings of the abdomen p 4, 
divefted of their skin; and the extremity of 
the fundament g, out of which the inteftinum 
rectum has caft its exuvia or skin, as the gul- 
let did with the upper parts. Thefe. little 
parts are like two {mall fhields. As to the 
eyes they are very confpicuous in the Nymph, 
but they cannot be reprefented by the fame 
figure, becaufe they are fituated a little deeper 
behind the horns. The whole motion of the 
external parts of the Worm is now totally loft, 
in the fame manner as it was before when the 
Worm was in its egg: hence the creature is 
twice as it were in a uterus, and twice in the 
ftate of a foetus. Some {mall motion remains 
in the tail or fundament of the Nymph, be- 
caufe the extremity of the abdomen undergoes 
the leaft change of all. Thus the Nymph, 
by moving-the hinder rings of its body or tail, 
* Jn the outer cafes of the wings in Beetles there is a vaft diftin@tion, 
TAL 
can move itfelfand change its fituation in its 
little cell: this is likewife performed by the 
Chryfalis of the Silk-worm when it lies in 
its web. 
In this moft wonderful change of the skin, 
and tranfpofition of linbs and parts of this 
infect, nothing demands greater attention, than 
what we may obferve about the points of ref- 
piration: for though each of thofe nine points 
which are fituated on each fide of the body 
cafts a skin, yet this can be diftinctly affirmed 
only of the five foremoft ones, for the four 
loweft or laft points on each fide change their 
skin a3 the reft, but they lofe all their priftine 
form at the fame time; three of them on each 
fide become fhorter, and the fourth is entirely 
clofed up. At the very fame time that the 
Worm, under this prodigious change of its 
skin, is transformed into a Nymph, a vaft 
number of diftiné tubules or pipes is likewife 
thrown out from all -thofe refpiratory points, 
and thefe tubes, being each obliged to pafs 
through that narrow orifice, appear like fo 
many {mall and fimple filaments, though, in 
reality, each of thefe eighteen little fibres, as 
they feet, is compofed of many pulmonary 
pipes, that are laid clofe together. 
In order to underftand thefe things the better, 
I fhall add a figure to the defcription of them, 
and in Tab. XXVIII. fig. rx. a Nymph of the 
Coffus laid on its belly, and fhall exhibit all the 
annular divifions and points of refpiration in its 
back. Thefe points fhall be afterwards feverally 
reprefented in their fituation, as they appear 
after the Nymph is changed into a Beetle. ‘The 
firft thing then feen here is the horn of the 
nofe i; fixed on the head, which conttitutes 
as it were the firft ring of the creature: then 
follows the fecond annular incifion 2, wherein 
the firft point of refpiration is placed, fo fituated 
laterally under the firft pair of legs in the 
breaft, that it does not appear but when the 
Nymph is killed. The third and fourth rings, 
3, 4, are feen both without points of refpiration, 
becaufe the wings and cafes thereof are placed 
there *. Befides thefe, two annular incifions in 
the Nymph are concreted into one ting, and 
then form the lower part of the thorax or 
back, In the mean time, when thefe parts are 
cafting their fkin, on each fide between the 
rings of the thorax, two little ropes as it were 
of pulmonary tubes are caft out of the body, 
as has been before reprefented in the figure, 
where we have defcribed the change of the 
skin which the Worm itfelf undergoes. But 
thefe apertures are afterwards clofed up in the 
Nymph, until having caft its skin, it at length 
becomes a perfect Beetle, wherein thefe orifices 
are at length totally abolifhed. The fifth ring 
55 contains the fecond point of refpiration, which 
not only in colouring and ornament, butin fhape ; fome 
cover the whole body, and are a defence to the inner wings, with little foldings of thofe more delicate parts: but in others the(e 
outer wings or cafes of wings are fhort, and only fall over the fhoulders. This is the cafe in that common. and diftafteful black Beetle 
which crawls about damp hedges, with its body naked and annular ; the under wings are beautifully folded up under their {mall 
safes. 
Oo 
eannot 
