[ 79 ] 
I doubt whether thefe animals have yet been taken 
notice of by the curious, though they are very fre- 
quent upon the fea-coafts. A rough /ketch of an 
animal fomewhat like this is to be found in Aldro 
yandus * with the infcription, Urtica marina faxo 
mnata. But as neither he, nor John/ton T, who 
copied the figure from Aldrovandus, gives any farther 
explanation of it, it is incertain what fpecies of urtica 
the faid figure reprefents. 
. T ^ e polype belonging to the fecond clafs, conceal- 
ing their feelers when irritated, are the following • 
Hydra calyciflora, tentaculis retratfilibus variegatis 
corpore verrucofo. b 
The fecond figure reprefents a polype of this fort, 
r rom its fmall bafis rifes a cylindric /talk, which fup- 
ports the roundiih body of the animal, from whence 
afterwards the calyx, being a continued membrane 
of the body, draws its origin. The folk, or the 
pedunculus of the polype, is quite fmooth, and its 
colour inclines towards the carnation. The outfide 
of the calyx, and the body of this animal, are marked 
with a number of fmall white protuberances, refem- 
bnng warts, to which fragments of /hells, fand- 
grams, &c. adhere, and hide the beautiful colour of 
the/e parts, which, from that of carnation, is infen- 
hbly changed towards the border of the calyx, fir/f 
into purple, then violet, and at laffc into a dark 
bi own. 1 he infide of the calyx is covered with the 
feelers, that grow in feveral ranges upon it : they 
diiier confiderably in length j thofe that are near the 
* Aldrov. de Zoophyt. lib. iv. p c68 
t Johnft. Exang. Tab. XVIII. 
edge. 
