The 
immoveable in this cavity; and immediately 
after they become, by degrees, by voiding the 
excrements and by the evaporation of their 
humidity, more flender, fhorter, and uneven 
in the body, with more furrows or wrinkles 
than before; thefe, however, are alfo difpofed 
on the fkin in a very beautiful manner: and 
hence both the diftention and clearnefs of the 
{kin difappears fo perfectly, that one would 
- think the creatures were ftarved by degrees, 
and their fubftance confumed with hunger. 
Tt is remarkable that at this time the internal 
parts of thefe Worms do not appear protube- 
rant through the fkin, as is the cafe in Silk- 
worms, and in the Worms of Bees and other 
infects ; though one may fee even thefe already 
under the skin, and alfo diftinguifh by what 
degrees they increafe. 
Before I profecute this matter further, it is 
neceflary to know, that if the Coffus be dif- 
feéted about this time, its divifion into the 
head, thorax, and belly, may be diftinguifhed 
very clearly. ‘The gullet, fig. v. a, keeps its 
original form: but the ftomach 44 is changed 
and greatly contracted: the fame likewife hap- 
pens about its appendages, ccc, for thefe al- 
moft totally vanifh. ‘The vafa crocea or va- 
ricofa dd, the yellow or knotted veffels before- 
mentioned become more loofe and free; though 
in the mean time they do not yet feparate from 
the ftomach. On the hinder part of the 
ftomach, about the pylorus e, is feen the in- 
fertion of thefe veffels ; for they arife there in 
four diftin@ tubes, fo that properly they ought 
to be called inteftina caeca, clofe or blind guts. 
The fame may be likewife feen in diffecting the 
Bee-worm, in the figures of which I have 
likewife delineated thefe veffels. ‘The in- 
140 
 teftine colon f to this time nearly keeps its . 
bignefs, nay, it now prefents g its little cells to 
view more diftinctly than ever. ‘Towards the 
hinder parts, under this, of towards the in- 
teftinum reétum #, are feen curious vefiels 
twifted in a wonderful and very beautiful man- 
ner, on each fide of that inteftine 77. 
may likewife at this time eafily divide the fub- 
ftance of the ftomach into its three coats, and 
diftinguith its moving fibres. 
It is admirable beyond all comprehenfion, 
- how the Worm of the Hornet that is to put on 
the form of a Nymph, difcharges at the fame 
time all its excrements, together with the in- 
ward coat of the inteftine, or rather of the 
ftomach, which embraces or contains them; 
fo that by this means this entire membrane 
and. all the colle€ted feces are thrown out of 
the body together. The fame thing happens 
in this cafe as does with refpect to infants 
whilft enclofed in the mother’s womb: for 
they likewife retain together in their inteftines 
until the time of birth all the excrements 
which are formed in the {pace of nine months. 
I have alfo obferved the fame thing exactly in 
the Calves from the Cow’s belly: nay, what 
is very fingular is, I have found in thefe ex- 
crements hairs in every refpect like thofe that 
B OJOMK ofl SALT URE; 
We. 
or, 
cover the furface of the body, and particularly 
thofe about their mouth. From this obferva- 
tion I really think it is moft clearly proved that 
animals often lick their body in the uterus with _ 
their tongue, and thus {wallow their own hairs 
with their food; and that thofe hairs are after- 
wards mixed with excrements as I have found 
them. Therefore it is moft ftrongly demon- 
ftrated, that the humours wherein the ani- 
mals fwim in the uterus, and which are like- 
wife found in their ftomachs, ferve them as 
food. ‘Their excrements are whitifh in the 
upper part of the inteftines, and yellow a little 
lower; a little deeper they are of a yellow 
green and blue; and at length, in the end, 
they are of a brown and blackifh colour, The 
excrements that are found in the Worms of 
Hornets are in all refpects of the fame form, 
figure, and fubf{tance: hence it is clearly evi- 
dent, that all the Worms of Hornets feed 
upon one kind of food, and this is principally 
a fmall fpecies of Cantharides. In thefe Flies 
the little parts over the eyes, the legs, and 
the cafes which cover the wings, are obferved 
to glitter like gold, and thefe are found in their 
feeces. The Hornets therefore bring up their 
young like birds of prey. 
After we have obferved the manner wherein 
the external and internal parts are changed by 
a flow accretion in the Coffus, it gives us 
pleafure to obferve that fuch of its parts as are 
not to be changed at all, and others which 
have lately increafed by degrees under the skin, 
are gently diftended by the force of the blood 
and impelled humours: hence it. happens, 
that the body in general contracting itfelf more 
and more, and all the blood being propelled 
towards the fore parts, the skull at length opens 
very artificially into three parts ; which like- 
wife happens, as we have before obferved, in 
the change of the skin, which the Worm un- 
dergoes. The skin then likewife opening in 
the middle of the back, is, by means of an 
undulating motion, which is obferved along 
the annular incifions of the back and the reft 
of the body, carried down infenfibly by de- 
grees: and hence the eyes and horns, the lip, 
and the fharp-pointed antenne, caft their 
exuvie or skins at one and the fame time, and 
aré extended, and inflated with blood, hu- 
mours, and air: they thus acquire by de- 
erees the fituation which they before had 
in the Coffus. Whilft all thefe things are 
doing, a watery and thin moifture is diffu- 
fed between the new and old feparating skin, 
which renders the parting of the two the. 
eafier. ? 
The firft part of the Nymph that appears 
after this change of the skin, is the horn on 
the nofe, fig. vi. vir. and vir1.a, which be- 
fore lay under the skull in the Coffus fate. 
Under this are afterwards feen fome very low 
prominenices on the bafis of the horn 6. At 
each fide of it alfo two fpherical tubercles ap- 
pear cc, iffuing from the teeth of the Coflus, 
which are much fhorter here in the Nymph * 
as 
