THE CLOAK ANEMONE. 127 



pointed out by myself in " The Aquarium," in which I have 

 thus explained its manner of growth. — " The Adamsia 

 is evidently an Actinia of a long-oval form, capable of 

 development in its long diameter into two lengthened 

 wings. Its instinct invariably leads it to select as its 

 support the inner lip of some univalve shell ; having ad- 

 hered to which, the lateral expansions creep along the shell, 

 following its surface until they have surrounded the aper- 

 ture, and meet each other on the outer lip. Here the 

 meeting edges unite by mutual adhesion, and seem to grow 

 together ; yet the suture is always distinctly visible, both 

 by a slight depression, and by a pale line which assumes a 

 zigzag form, owing to the terminations of the body-stria? 

 fitting into the interspaces of the opposite ones."* 



In Plate III. fig. 8, 1 have depicted an individual, adherent 

 to the shell of Buccinum undatum, in which the lateral lobes, 

 though projected around the edges of the mouth of the 

 shell, have not yet met each other on the outer lip, but are 

 separated by a space of a quarter of an inch. And I have 

 seen a very young specimen, less than half an inch in 

 diameter, the outline of which was exactly like that of a 

 normal Anemone ; the lateral lobes not having yet com- 

 menced their extension. This little individual was adherent 

 to the inner lip of the shell of a Garden Snail (Helix aspersa) , 

 which had been accidentally washed into the sea. A 

 Pagurus Prideauxii had selected the same shell as his 

 abode, and to his wanderings it was probably owing that 

 the shell had found its way into eight fathoms' water, a 

 mile or two from land. 



This manner of growth is further illustrated by what 

 takes place at the disease and death of the animal. The 

 adhering base begins to peel off, and shrink away from the 



* Aquarium ; Ed. i. p. 139 ; et seq. 



