258 NATURAL HISTORY 
dreffcd round with fourteen fangs, / / ; the back is round and 
convex, like that of the reft ; the whole tranlparent, colourlels, 
and cartilaginous ; and to diftinguifti it from the reft, may be called 
Ur tied marina ex trunco oElopedalis limbo imbricatim undante. Theft 
five are defigned by the fcale, A A. 
But the moft beautiful of this kind which I have met with, and as 
far as I can learn has not been yet deferibed, is Fig. xvi. ib. p. 254, 
which, being large, is here deferibed by the fcale, B B : It is all 
of the moft pure cryftal jelly ; Ibme have a greenifti caft ; the mar- 
gin is formed by little femicircular fangs about half an inch diameter, 
and as much diftant from each other ; tranfparent as the reft, but 
that at their very brim they are tipped with a very beautiful blue. 
Four ftutcheon-like figures, e e, aptly joining their baft points, 
form a fiender fulcus in the form of a crols at the center j four 
figures in the form of a heart, fill the vacancies between the fides 
of the fcutcheons ; from the circumference of this compounded 
nucleus proceed fixteen notched fangs, d Y, contiguous to each other 
at their baft ; on the outfide of which at every fulcus betwixt the 
fcutcheons and the heart-like appendixes are inftrted the legs or ten- 
cles in number vm; they are here turned back and difplayed b b\ 
thoft parts of the legs next the body (which is here marked c c) are 
flat ; but what is next the eye is divided into three blades about 
three quarters of an inch thick, jagged, carved, or furbelowed at the 
edges, but the lower part, f f , flattened like the blade of an oar, with 
three angles for the better cutting the water, as may beft be appre- 
hended from the icon : between theft legs are eight crefcent-like 
mouths, a a , which have a bunch of jelly at their aperture to cloft 
and open them ; all theft mouths are inlets to one common open- 
ing which extends within the central nucleus , making a circular 
cavity, the dimenfions of which may beft be feen at e e e, in Fig. 
xvii. within this cavity are the inteftines, confifting of a continued 
ftries of gut, yellow without, faftened to the body by a common 
membrane of about three inches deep, on which the guts are de- 
pendant : Fig. xvii. reprefents the back of this creature with the legs 
pendant , as Fig. xvi. repreftnts the various imagery of the under 
part. Till I am better informed of a name, I fhould call this Urtica 
marina oElopedalis 0EI0 faucibus et variis appendicibus ventralibus 
difinEla. It was found on the landy beach betwixt Penzance and 
Marazion 1756. 
Theft creatures fwim obliquely, contracting alternately, and ex- 
panding their brim and promoting their reft and motion by the legs 
which they are lupplied with : their motion however cannot be 
fwift, which makes them an eafy and probably a nourilhing and 
delicious prey to larger fifh ; but they are fometimes eaten by man. 
Rondeletius, 
