BRYOZOA. 



239 



ledge of tliis curious process. He says : "This most beautiful pearl- 

 coloured coralline adheres by small tubes to fuci, from whence it 

 changes into flat cells ; each single cell, like the bracket of a shelf, 

 broad at top and narrow at the bottom : these are placed back to back 

 in pairs, one above another, on an extremely slender tube that seems 

 to run through the middle of the branches of the whole coralline. The 

 cells are open at top. Some of them have black spots in them ; and 

 from the top of many of them a figure seems to issue out like a short 

 tobacco-pipe, the small end of which seems to be inserted in the tube 

 that passes through the middle of the whole. The cells in pairs are 

 thought by some to have the appearance of the small pods of the plant 

 Shepherd's Purse, by others the shape of the seed-vessel of the Veronica, 

 or Speedwell. 



fig. 107. 



1. Notamia busaria, or Shepherd' s-purse Coralline. 2. Anguinaria spatulata, or 

 Snake Coralline, growing with the Campanularia integra* 3. The Shepherd's- 

 purse Animalcule drawn into its cup, the internal organism of which is shown 

 greatly magnified. 4. Coryne stauridia, or Slender Coryne. 5. One of the tubercles 

 detached and magnified. 



The polypidom of this bryozoon, like those of most of its con- 

 geners, may be said to consist of a radical portion, by which it is affixed 



