ADAMSIA. 229 



1. ADAMSIA PALLIATA, /. Adams. (Plate XIII. fig. 43, 

 frontispiece.} 



Hab. Milford Haven, Mr. Adams ; Torbay and Rothesay, 

 Dr. Coldstream ; Stevenston shore, Ayrshire, and Brodick 

 shore, Arran, D. L. ; Isle of Man, Prof. Forbes ; Belfast 

 Bay, Mr. W. Thompson and Mr. Hyndman. 



Dr. Johnston gives a description of this interesting zoo- 

 phyte by Mr. Adams, who was the first to discover it. He 

 gives a still better description by our friend Dr. Coldstream. 

 The general mass of the animal is flattened and extended ; 

 the margin minutely crenated ; colour of the body reddish- 

 brown, passing into a light cream-colour towards the oral 

 disc ; the whole surface striated with white and bluish lines, 

 marked with bright reddish-purple spots. The oral disc is 

 white, bearing on its outer margin numerous short tenta- 

 cula, arranged in three or four irregular rows. Base fixed 

 to a thin horny expansion attached to the apertures of va- 

 rious dead shells, such as Trochus magus, and forming an 

 extension of the body- whorl of the shell in a spiral form. 

 " The case,"says Dr.C., " thus formed by the old shell and the 

 horny membrane, and covered by the Actinia, I have always 

 found inhabited by a variety of the hermit-crab." " It 

 seems probable that the horny membrane is produced by the 



