PLATE X. 



PAGE 



Fragments and spicules of Waltena jiemmingii, F. E. S., . 96 



Fig. 1. Discohexaster from the parenchyma ; x 500. 

 Fig. 2. Floricome ; x 500. 



Fig. 3. Fragment of the tube wall, outside; x 50. 

 Fig. 4. Fragment of the framework of the tube wall, outside ; x 6. 

 Fig. 5. Discohexaster from the parenchyma ; x 500. 

 Fig. 6. Fragment of the framework of the tube wall, outside ; x 25. 

 This plate was arranged by Sir Wyville Thomson. 



