[ 8i ] 
than of a polype. Its body is covered with a dufk* 
white fkin, in which a large opening appears at the 
thicker extremity of the body, and at the oppofite 
end of it are y fmall denticles, that furround a cavity 
placed in their middle. The furface of this cylin- 
drical body is marked with fix double rows of per- 
forated knots, which the animal can transform into 
as many legs, if occalion requires, by extending each 
tuberculum into a fmall tranfparent cylinder, whofe 
extremity, like that of the fuckers of the ftar-fifh, 
flicks fall to every thing, which the animal gets hold of, 
and confequently ferves it for an inflrument, not only 
to fix its body with, but alfo to pufh it forward, by 
the help of many of thefe fuckers, that are formed 
of the feveral knots of different rows. The head of 
the polype (vide fig. 3. lit. B) coming out of the 
above-mentioned opening in the .fkin, is of an oval, 
and fometimes of an hemifpherical figure, fomewhat 
like the corolla of an afarum, but much larger in 
fize. It is quite hollow within, and confifts of a dark 
brown, yet almoft tranfparent membrane, which, 
after having formed the head, produces the feelers, 
that furround the large aperture at the top of it. 
Thefe feelers are eight or ten in number, and of the 
fame fubflance and colour with the head ; they are 
divided into feveral branches, to which, as well as to 
the principal Items, many clufters of very minute 
papillae adhere, which make them exactly referable 
fmall branches of trees covered with their leaves. 
Thefe leaves, or papillce, not only contribute to the 
beauty of the feelers, being of a pale yellow, mixed 
with a fhining white like filver, but they alfo rendei 
Vol. LII. M the 
