A Short Explanation’ of the PARR EES, * xxxix 
kk The two main trunks of the pulmonary 
_ tubes, fhewing themfelves through the belly. 
Thefe tranks have their mouths in‘ the ap- 
pendage of the Worm’s tail. 
/ The anus difcharging fome excrements. 
m Excrements diffolving.in the water. 
n A little tranfparent inteftine, fhewing in 
what manner the excrements are extruded. 
‘EB Pe WL. 
The great Worm changed to.a Nymph, of tts na- 
tural fize, in two different fituations. 
FIG. VIL and VIL. 
Two reprefentations of the fad Nymph fomewhat 
magnified, One of thefe reprefentations conjifis 
of nothing but outlines, the better to exhibit the 
_ parts of the sees shih it is intended to 
Loreprefent. 
a One of the eyes on the fide of the head. The 
head itfelf at this time lies higher up. 
& One of the two-antenne. digidec into black 
joints. 
c A fting, or prickle, with its fharp point 
lying between thé wings’ 
dddd The legs; the hinder ones coiled up in 
a very furprifing manner, and lying for the 
moft part under thé wings, through which 
however, thofe belonging to one fide fhew 
_themfelves in this figure. 
ee One of the wings. 
Ves 
ing ene 
iz The antenne of the Worm, altered by caft- 
ing afkin. It is by means of thefe antenna, 
that the Nymph now hangs by its head on 
the furface of the water, and in this fituation 
breathes, and is enabled to perform its mu- 
- tation with the greater facility. 
T A B.« XXXH. 
Eee, ma. 
The male Gnat, of tts natural fize. 
og EF PG. I. 
The male Gnat viewed by the microfcope. 
aa The eyes, refembling a net. 
66 ‘The antenne, much more beautiful than 
thofe of the female. 
cc One pair of the antennz, or articulated 
briftles.. each of which confifts of three 
joints. 
d The external théaths of the fting. 
@ The fting itfelf, or one of the five ftings 
projecting beyond the fheath. 
Shff Vhe Gnat’s fix legs, confifting each of 
feven joints. 
goer ‘Sharp, fealy,, feathers srowing on the 
two wings. 
bb Two little hanimers, again{t which the Gra? 
_ ftrikes. its wings, and fo makes a buzzing 
noile 
77-The thorax, covered with fiff hairs. 
kk The belly, confifting of eight Hinge as, in 
the Worm. 
Bo icGe dik: 
The fiings of the Gnat, and their ee Sheath, 
or borny channel, 
a The’ external Meath’ of the ota cut off 
near the head, and feparated from the’ flings, 
‘and their chainel. 
6 The internal tubulated’ thexth:, or channel, 
‘ containing five ftings. The blood’ flows in 
this channel along” or amoneft the ftin Y 
There are befides in here two drops of 
tranf{parent liquor or humour, which abr 
haps is the poifon faliva that produces the 
the tumour, in the wounded fkin. 
cc The very flender ftings, extracted’ from the 
faid channel. 
ddd Three thicker ftings, pulled likewife out 
of the faid channel. 
é The neck of the Gnat | REGS from its 
body. 
J The head. 
gg The eyes of a reticulated form. 
bb Vhe horns cut off. 
zz A pair of articulated briftles cut off likewife. 
F.L.G;. TV, 
The head, and fling of the female Gnat. 
aa The antenne, or horns, which differ con- 
fiderably from thofe of the male. 
bb The fhorter articulated briftles. 
¢ The external fheath of the fting. 
BF oinGsy. 
The female Gnat of its natural fize. 
TAB A OEXNTIY, 
Which exbibits the nocturnal Butterfly or Moth. 
No. I, The Worm or Caterpillar of the noc- 
turnal Butterily, fticking in its firft coat or 
fkin, and of its natural fize. 
II. The hardened thell of the egg, divided in- 
to two parts, as quitted by the Worm. 
If. The Caterpillar itfelf, having attained its 
full fize, remarkable on account of its won- 
derful form. 
@ Four little bundles of hair, behind the head, 
like fo many cloaths bruthes, clipt even at the 
tops; they are of a white colour, inclining 
to yellow, and fet along the back. 
bb Two other bundles ae black hairs of un- 
equal lengths, placed about the fore part of 
the head, and which appear like horns. 
cco Twe 
hs 
