Tank Nr. 4. 



11 



Tank ISir. 4. 



AscidJans (Sea-squirts, p. !S4i. ('i/nf/ii(( (tit;". 28^, {'rimsoii-seaiiet, 

 saiisiij;e-shapod; the mouths of tlio two tubes can be seen 

 projecting. Phallusia (fig". 29), knobbed white mass. Cioiia 

 (fig. 30), white half-transparent double lubes. Colonies of 

 D'lazona { fig. 31 ). Many other Ivinds. Tubicolous worms 

 (see Tank 22) , a foot liii;li, like fcatlicry pahns. 



Fig. 



28. Four specimons of 

 Ci/iithia jiapillofia, 

 '/ij nat. size p 81. 



Fig. 



29. 



Ph alius ia m a mm illata, 

 '/^ nat. size. p. 85. 



Fig. 30. Four specimens of 

 Cionn intesthialis, 

 '/jj nat. size. p. 84. 



Fig. 31. A colony of 



Diazona violacea, 



'/a nat. size. p. 85. 



