CORALLINES. 



305 



tentacles, waving from out the horny " pipes," is 

 a well-known object, and this may be seen at the 

 Crystal Palace, together with the " lobster's horn " 



Fig. 236. 



Oaten-pipe Coralline ( Tubitlaria indivisa). 



coralline (Antennularia antennina), and the true sea- 

 fir (Sertularia abietina, Fig. 183), all of them hydroid 

 zoophytes. It is difficult to preserve jelly fishes, 



