PLATE 2. 



Fig. 3. Cell contents of chain of Gonyaulax series, sp. nov. X 1120. 

 Fig. 4. Midventral view of 5th to 7th members of the chain. X 1400. 

 Fig. 5. Ventral view of chain of two individuals of Gonyaulax catenata 



(Levander). After Levander (1894). X 780. 

 Fig. 6. Ventral view of parts of two individuals of Ceratium bucephalum 



in chain showing structure of the ventral region and method 



of attachment in chain. X 700. 



