PLATE IX. 



BOUGAINVILLIA FRUTICOSA, BoUGAINVILLIA RAMOSA, BoUGAINVILLIA BrITANNICA. 



Fig. 



1. Bougainvillia fndicosa, magnified. 



2. The same, natural size, attached to the under surface of a piece of floating timber. 



3. A planoblast of the same, just after liberation, and in the act of swiuiming away from its 



trophosome. 



4. The planoblast floating passively in the water. 



5. BougainvUUa ramosa, magnified. 



6. A colony of BoiigainvilUa ramosa, natural size. 



7. A planoblast of Bougainvillia ramosa, shortly after liberation, as it appears while floating 



passively in the water. 



8. Mature planoblast [BougainviUia Brifatinica), drawn from a specimen captured in the open 



sea. This planoblast has not yet been referred with sufficient certainty to its 

 trophosome. 



