PLANKTON OF THE JAPANESE COAST. 



127 



Loc. in Japan : Prov. Tosa. 

 Other known loc. : Italy (fossil). 



IV. Peridiniales. 



7. Amphisolenia bidentata Schröder. (Pl. III., fig. 15). 

 Schröder, 1901, p. 20; Pl. L, fig. 16. 



The specimen figured measures: Total length of body ca. o. 1 

 mm. ; thickness of stem in the slender portion 0.0075 mm. ; that in the 

 fusiform portion 0.02 mm. ; sagittal length of upper valve 0.017 mr n. ; 

 breadth of marginal list 0.0075 mm. 



Loc. in Japan : Prov. Tosa. 



Other known loc. : Mediterranean Sea ; Indian Ocean. 



8. Blepharocysta splendor maris Ehrb. (Pl. V., fig. 34). 

 Schutt, 1896, p. 24 ; fig. 34. 



Diameter of the specimen figured measures 0.064 mm. 

 Loc. in Japan : Prov. Tosa. 

 Other known loc. : Red Sea. 



9. Ceratium lineatum (Ehrb.) Cleve var. longiseta Ostf. and Schm. 



(PI. III., fig. 7). 



Ostf. and Schm., 1901, p. 163 ; fig. 12. 



Loc. in Japan : Provinces of Tosa and Shima. 

 Other known loc. : Red Sea. 



10. C. gravidum Gourr. (PI. III., fig. 5). 

 Gourr., 1883, p. 58 ; Pl. I., fig. 15. 



Okam. and Nishikawa, 1904, p. 127 ; Pl. VI., fig. 21. 

 Loc. in Japan : Provs. Tosa and Böshyü. 



Other known loc. : Indian Ocean ; Atlantic Ocean : Mediter- 

 ranean Sea. 



11. C. limulus Gourr. (PI. III., fig. 8). 

 Gourr., 1883, p. 33 ; PI. I., fig. 7. 



The specimen figured measures: Height of body 0.054 mm - » breadth 



