Bulletin de l'Institut Océanographique 



(Fondation ALBERT I", Prince de Monaco) 

 No 384. — i5 Janvier 1921. 



Plankton list 

 and some new species of Copepods 

 from the northern waters of Japan. 



by H. MARUKAWA 



The Imperial Fisheries Institute, Tokyo 



Under the direction of the Fisheries Institute, the training 

 ship (( Unyomaru » made a long voyage from july to October 

 in 191 5 and from may to October in that next year, through 

 the northern Pacific, the Ochotsk and the Japan seas for 

 the fisheries experiments and the hydrographical works. 

 On the voyages 1 collected specimens using small silk tow 

 nets and also closing plankton nets, at the places indicated 

 on the attached map. Among those specimens I found 

 77 species of phyto - and 87 of zoo-plankton which are listed 

 as follows. 



Four new species of Copepods here described were met with. 



Remarks : In the column of « Local distribution » B. N., 

 T. N., Tr. N., B. O., P. O., Tr. O., A & B. O., Tr. & T. O., 

 Tr. & T. N. etc. are respectively Boreal Neritic, Temperate 

 Neritic, Tropical neritic, Boreal oceanic, Temperate oceanic. 

 Tropical oceanic, Arctic and Boreal oceanic, Tropical and 

 Temperate oceanic, Tropical and Temperate neritic etc. 



In the column of « Place where collected » J., O., P., etc. 

 mean respectively Japan sea, Ochotsk sea. Pacific ocean etc. 



