[ 8 ° 3 
edge of the calyx being but fmall papillae, in propor- 
tion to thofe, that furround the difk, or the central 
part of the body. (Vide fig. 2 . lit. C.) They are 
almofl tranfparent ; and fome of them are of a 
pale afh colour, with brown fpots; others, on the 
contrary, are of a chefnut colour, marked with white 
fpots. The difk is formed like a ffar, which, ac- 
cording to the figure, that is traced out by the inner- 
mofl row of the feelers^ confifls of many angles. 
The colour of this part of the body is a beautiful 
mixture of brown, yellow, afh-colour, and white, 
which together form variegated rays, that from the 
center, or the mouth of the animal, are fpread over 
the whole furface of the difk. 
This polype contracting itfelf, (vide fig. 2 . lit. B) 
changes its body into an irregular hemifphere, which 
is fo covered with the feveral extraneous bodies that 
flick to it, that it is extremely difficult to know the 
animal in this flate, and to difcern it from the rub- 
biffi, that commonly furrounds it. 
Thefe animals are frequently found in the pools 
about the Mount’s-Bay. It is rare to meet with a 
fingle one in a place, there being mofl commonly four 
or five of them living fo near together in the fame 
fiffiire of the rock, which they conflantly inhabit, 
that their expanded calyces form a row of flowers like 
bodies, that feem . to grow upon the cliffs under 
water. 
The fecond fpecies, is the 
Hydra corolliflora, tentaculis retra&ilibus fron- 
dofis. 
This animal, in its contracted flate (vide fig. 3. 
Jit. A), has more the appearance of a caterpillar, 
than 
