he el di Sena Re Vi vol kk NaS Bee ures. 
are joined two other pair of f{maller parts like 
legs: and in the middle, between each pair of 
thefe, are obferved fome peculiar little bones, 
whereby thefe legs are joined to the thorax. 
The firft pair of them, Tab. XI. fig. 1. f/f, 
has indeed five joints, and, in other refpects, 
it is of the fame ftructure with the arms or 
forceps, and has, like them, a very {mall 
thumb. The other pair likewife confifts of 
five joints, and is very worthy of notice gg, 
becaufe the firft pair of thefe joints, that next 
to the thorax, or the fifth, if you compute 
from the extremities, is perforated with two 
{mall tubes, iffuing fron the abdomen, through 
which the femen or eggs are fecreted ; which 
indeed deferves very great confideration. The 
upper part of the thorax, or back, 1s furnifhed 
with a {mall thield; behind which is placed 
fuch another, but lefs. On the fides of the 
thorax the cruftaceous covering of the back is 
thin, and if it be raifed up, which may be 
done without diffecting it, the branchie or 
gills are obferved underneath, placed on each 
fide of the thorax. ; 
The abdomen is foft, and has no fhelly or 
cruftacious covering ; fince the {hell itfelf is 
its coat, and does the office of that hard fkin: 
The body is in this part bent near the duct of 
the fpiral windings of the fhell, with which it 
is furrounded. But this bending of the body 
is not fo remarkable asin Snails ; becaufe the 
body of the Hermit is not extended through 
all the turnings of the fhell. The abdomen 
has on the right fide three teftaceous briftles 
bbb, each of which confifts of two joints. Ron- 
deletius, in his Hermit, feems to delineate fix 
fuch little parts, which are interwoven or 
planted with little eggs or {pawn like beads. 
_ Among many things worthy notice in the 
belly, what deferves moft particular confidera- 
tion is a certain eminent or prominent point 7, 
which is naturally the firft thing obferved in 
the thorax, and is as the center, wherein all 
the tendons of the mufcles, and that part of the 
abdomen meet; and by the help of which, 
the Hermit is in that part fixed in his thell or 
{tony fkin, fo that it can never go entirely out 
of it. Though its thorax, and the hinder 
part of the abdomen and the tail adhere to 
nothing, and that there is fuch large room of 
fpace in the fhell, as that the Hermit can 
freely move itfelf therein; yet the thorax is 
forced to remain fixed in the fhell, like the 
Tortoife in its houfe or fhell. 
The tail of the Hermit is alfo furrounded 
with acruftz. That this may appear the more 
plain, I have delineated it larger than it natu- 
rally is. ‘This tail confifts of two teftaceous 
articulations, Tab. XI. fig. 111. 2, to which 
are added at the end a verge as in Snails 4, 
_which forms the third joint, and ferves to hide 
the fundament: for the inteftinum rectum ¢ 
terminates there in the fecond joint. On each 
fide of the tail are three pair of teftaceous little 
‘gun the diffection there. 
89 
bones dd; which, like the arms, are larger 
on one fide than on the other, and beautifully 
decorated with {mall hairs. The Hermit makes 
ufe of them when it finds an enemy approach- 
ing, to hide itfelf in the thell, or when it de- 
fires to teft; for then by their affiftance it lies 
fixed in the hinder parts of the fhell, or draws 
itfelf back into it. But if the Hermit draws 
to it, or contracts thefe litile parts, it can then 
protrude its tail forward into the entrance of 
the fhell, and thus it evacuates its excrements. 
For this purpofe, I think, nature has given it 
fo large a fhell; the hinder windings whereof 
are not all filled with it, as we have before ob- 
ferved. 'The fame is found in Snails that inhabit 
fhells; which, for that reafon, difcharge their 
excrements through their neck, and have not 
a very moveable tail. Thefe little bones of the 
tail are formed, fome larger than others, in 
Pepe) to the {pace in the fhell, for this is 
arger on one fide than on the other. In the 
fame artificial manner are built the wheels of 
french chariots made for afcending. , 
The internal parts. 
Receive, illuftrious fir, this brief defcription 
of the external parts of the Hermit Fith, and 
permit me now to pafs to the internal, begin- 
ning with the abdomen, becaufe I have be- 
When the abdomen 
is opened, the firft thing that appears is the 
outer and inner fkins, which are glandulous; 
and immediately under there is feen a flefhy 
membrane. After thefe integuments are dif- 
fected or taken off, a great number of whitith 
filaments prefent themfelves; which are deli- 
cately and orderly placed on very numerous 
and beautifully digefted parts,in form refemb- 
ling inteftines, fig. rv. gg. As I purfued the 
courfe of thefe white filaments to their origin, 
I faw they were blood vefléls, though of a 
white colour like a cob-web. .What I Arft 
took to be the inteftines were all appendages *, 
fometime plain, and fometimes divided; which 
were of a tubular ftructure and whitith colour, 
and contained a matter feparated into diffimu- 
lar parts, and condenfed into a ferum and 
coagulum. Thefe appendages were fo nume- 
rous as to cover almoft all the abdomen ; but 
they were all connected by the blood veffels, 
which I was obliged to break open with great 
attention, in order to difcover their origin and 
beginning. ‘Thus I at length difcovered that 
thefe were on each fide united, Tab. XI. fig. 
v. 6b, into two common duéts, which grow 
near the ftomach where the pylorus is placed, 
and are terminated in many unopéned tubes 77. 
What ufe thefe appendages are of, and whether 
they ferve inftead of a pancreas, which is 
formed in that manner in many Fifh, may be 
more accurately inveftigated in the larger 
Crabs. 
* This is a conftruction very frequent in the inteflines of Fithes. 
“Aa 
Among 
