Plate A 



4 







^* 



k. & 



Fig. 1. Peridinian Plankton, consisting 

 mainly of Ceratium tripos. 



4- 



Fig. 2. Plankton, consisting almost 

 wholly of Noctiluca miliaris. 



n ^WW*WSm 







31 »k"\ 



.<* .V' 



^Joli 





r *«*>.:< ^v, 







« 





!$ffEjN$fi 



%&& 





sS&Kziiati 



Fig. 3. Diatom Plankton, consisting 

 mainly of Coscinodiscus and Biddulphia. 



Fig. 4. Mixed Plankton, consisting of 

 Diatoms, Nauplii, Polj/chaet larvae, &v 



