PLATE VI. 



Syncoryne pdlchella, Syncoryne frutescens. 



Fig. 



1. Syncoryne puJchena, magnified. 



2. The same, natural size. 



3. A planoblast of Syncoryne jndchella, shortly after liberation, as it appears while floating 



passively in the water. 



4. Syncoryne frutescens, magnified. 



5. The same, natural size. 



G. Planoblast of Syncoryne frutescens, shortly after liberation. 



