BRITISH ZOOPHYTES. 157 



Tentacles imperfectly retractile. Mouth protrusile, 

 thrown into loose folds not furrowed. Acontia emitted 

 freely. 



1. A. PALLiATA, Adams. "The Cloak Anemone." 



Medusa palliata (i^o/iacZsc^), Actinia insiCula.ta.{AcJams, 

 Coldstream, G. J., Pennant), A. carciniopados {Otto), 

 A. picta (Risso), A. maculata {Forhes). 



Hab. : Wick (0. W. P.), Weymouth, Torbay, Fal- 

 mouth (P. E. G.), Arran (D. X.), Isle of Man {Forhes). 



Colour. Brown to white, spotted with purple, and 

 disc pure white, bordered with pale scarlet. Tentacles 

 white. Acontia lilac. 



This species is generally found on a shell inhabited 

 by a Hermit Crab, Pagurus Prideauxii. There would 

 seem to be " a treaty of union " between the Cloak 

 Anemone and the Pagui-us. In case the shell to which 

 the Adamsia attaches itself happens to be imperfect, it 

 has the power of secreting a chitinous membrane which 

 serves for its support, and this membrane often extends 

 beyond the outer whorl of the shell. 



Dr. Landsborough, in alluding to the association 

 between the crab and the anemone, says : '^ In all 

 likelihood they in various ways help each other. The 

 Hermit has strong claws, and while he is feasting on 

 the prey he has caught, many spare crumbs may fall 

 to the share of his gentle-looking companion. But 

 soft and gentle-looking though the anemone be, she 

 has a hundred hands, and woe to the wandering wight 

 who comes within the reach of one of them, for 

 all the other hands are instantly brought to its aid, 

 and the Hermit may soon find that he is more than 

 compensated for the crumbs that fall from his own 

 booty.-*^ 



