EXPLANATION OF PLATES 



PLATE 17 

 Peridiniiim granii Pauls 



Fig. 1. Ventral view of type from Sausalito, California, September 24, 1913. 

 X 1500. 



Fig. 2. Ventral view of type from Union Bay, Bayne Sound, Alaska, May 14, 

 1906. X 1500. 



[472] 



