ADAMSIA. 229 
1. Apamsia PALLIATA, J. 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 hght 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 Zrochus 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 
