166 HISTORY OF BRITISH ZOOPHYTES. 



rather suffered in the ti'ansit, I shall not attempt to add any- 

 tliiiig to Mr. Macgillivray^s good description. 



3. Campanularia intertexta, R. Q. Couch. 

 Hab. Parasitical on Sertularince, 



This is described by Mr. Couch as differing greatly from 

 the kindred species, and as being like a loose-textured 

 sponge, having minute campanulate cells, with even, trun- 

 cated apertures. Dr. Johnston speaks doubtfully respect- 

 ing it. 



4. Campanularia syringa. Creeping Bell Coralline, 

 EUk, (Plate XI. fig. 37.) 



Hab. Parasitical on other corallines, and the lesser fuci. 



After describing C. voluhilis, Ellis says there is another 

 species of this creeping kind of bell coralline, which is found 

 adhering to the sea-fir coralUne. The difference between 

 them is, that the twisted stalks of this are much shorter, 

 and the cups are longer-shaped, and not indented about the 

 brims. This seems rare on the west coast of Scotland, but we 

 observed it lately on Sertularia arr/entea, which is also rare 

 with us ; we have received it too from Allardyce, Cromarty. 

 Dr. Johnston says, what distinguishes this from every other 

 species, is its operculum — a name which Van Beneden 

 gives to a hd of a conical shape formed by a prolongation 



