[ S3 3 
fotne fnakes, with feveral crofs-lines, and brown 
fpots of an irregular figure. The difk of this polype 
is always convex, and chiefly of an orange colour, 
except towards its periphery, which is marked with 
many dark brown fpots, that furround the infertion 
of the feelers. 
At the lead: irritation, this animal contracts its 
body, and changes the cylindrical figure of it into a 
conoidal one. (Vide fig. 4. lit. A.) 
The fi fibres of the rocks in the fea are the only 
place, where I met with this fort of polypes, which 
is not common upon the coafts of Cornwall. 
Of this fpecies I found two varieties. The top 
parts of the one are in fhape and colour much the 
fame with thofe of the already deferibed animal ; the 
dalk only is of a deep green colour. The fecond 
variety has likewife a green ftalk ; but its feelers are 
not variegated, being throughout of a pale and trans- 
parent red colour. 
The animal flowers of Mr. Hughes *, and the 
fea-nettle, with a fhagreen fkin (Or tie a peau cha- 
grinee), of Mr. de Reaumur •f', may, perhaps, be- 
long to this fubdivifion. 
The lad fpecies of thefe polypes I have to propofe, 
is the 
Hydra difeiflora, tentaculis retra&ilibus, extimo 
difei margine tuberculato. (Vide fig. 5. lit. A 
et B.) 
* Philof. Tranfaft. Vol. XLII. p. 590. 
t Mem. de I’Acad. Roy. des Sciences, Tab. X. jig. 21 . 
M2 I only 
