HALF AN HOUE WITH CORALLINES. 



87 



conical or " club-shaped " form gives the name of 

 Corynida to them, the latter word being the Greek 

 for a club. The mouth is situated at the apex of 

 this club. The number of tentacles varies in the 

 different species, and the generative buds, or young, 

 are produced at their bases. One species, the 

 " Oaten Pipe Coralline " (Tubularia indivisa, Fig. 35) 

 is really a very beautiful object. It lives in about 



Fig. 36. 



Branched Pipe Coralline, magnified. 



thirty or forty feet of sea-water, and when its 

 tentacles are expanded, it resembles a brilliant scarlet 

 flower, or rather the pipes seem like so many small 

 glasses, each containing a flower. This species can 

 hardly be called " compound " in the sense in which 

 other corallines are. There is one nearly allied to 

 it, however, which is truly compound, the " Branched 

 Pipe Coralline " (Tubularia ramea, Fig. 36). It is 



