364 THE RED-LINED CHRYSAORA. 



narrowing limits of the Bristol Channel. Each of 

 these three localities, — the shores of the English 

 Channel, the Irish Sea, and the Bristol Channel, — 

 receives its portion of oceanic productions brought by 

 the winds and currents ; but the former two are open 

 passages, while the last-named, being closed, retains 

 such as are brought within its boundaries. And the 

 southern side of the Channel is likely to receive the 

 greatest part of such deposits ; for the winds setting 

 them upon the Cornish coast, the current would natu- 

 rally follow the bending line of the shore ; and thus the 

 rocky coves and inlets of North Devon might be 

 expected to be more than usually rich in those rare 

 and accidental stragglers, which the waves bring in 

 from their roamings in the boundless sea. 



So I have proved it. Two new species of Mquorea 

 I had already found here, a genus of which but one 

 example had been recorded as British ; and I have 

 now to add a magnificent species of Chrysaora, which, 

 though not new, appears to be rare on the British 

 coast. It occurred to me on the 14th of September, at 

 low water, embayed in a little tide-pool in the rocks 

 below the Tunnels, where it attracted my attention 

 by its vigorous and regular pulsations. (See Plate 

 XXVII, where it is represented about half the natu- 

 ral size). 



The umbrella (fig. l.) is about three inches in 

 diameter, depressed and sub-conic in expansion, 

 hemispheric in contraction, pellucid and nearly 

 colourless, but tinged about the summit with a deli- 

 cate flush of rose-colour. The surface is slightly 

 frosted or tomentose, and studded with a multitude 



