164 THE OCEAN WORLD. 
single orifice in the centre of the peduncle, with four long, fur- 
belowed, unfringed arms. Gaudichauds Chrysaora is found round 
the Falkland Islands. The disc forms a regular half-sphere, very 
Fig. 55.—Rhizostoma Cuvierii. 
smooth, and perfectly concave, forming a sort of canopy in the 
shape of a vault. The circle which surrounds it is divided into 
sections by means of vertical lines, regularly divided, of a reddish- 
brown colour, which form an edging to the umbrella-like disc. 
Twelve broad regular festoons form this edging. From the summit 
of these lobes issue twelve bundles of very long, simple, thread- 
