322 



APPENDIX. 



into some cranny in the rock, 

 and the arms are reduced to 

 mere knobs. (Woodcut, fig. 

 446). 



It is difficult to understand 

 why Prof. Filippi applies the 

 name Eleutheria to the gono- 

 zooid of Clavatdla. He admits 

 that the latter is generically dis- 

 tinct from Quatrefages's zoo- 

 phyte, yet ranks it under his 

 name ! Eleutheria should be 

 restricted to the form described 

 by the French naturalist; the 

 species bearing arms with dis- 

 similar branches must be referred 

 to Clavatella. 



Filippi has frequently seen 

 gemmation commencing on the 

 young zooid before its separation 

 from the parent, just as in Hy- 

 dra, so that three generations 

 were for the time organically 

 united. The number produced 

 by budding must be immense. 

 (Woodcut, fig. 43.) 



Fig. 44. 



Family Tubulariidse. 

 Genus TUBULARIA, Linnaus. 



T. INDIVISA, Linnaeus. 



I HAVE not included the T. calamaris of Van Beneden 

 amongst the synonyms of this species. The description of 

 it does not agree in some points with T. indivisa ; and Mr. 

 Alder, who had examined specimens supplied by Van 



