NORTH ATLANTIC PLANKTON. 61 



Coscuiodiscus radiatus (common). 

 Globigerina bulloides (few). 

 Copepoda : — Calanus propinquus (few). 

 Pleuromma abdominale (few). 

 Oitlwna spinifrons (few). 

 Ectinosoma atlanticum (few). 



IX. September 30th, 9 a.m. to 6 p.m. ; from lat. 55° 

 24' N., long. 41° 10' W. } to lat. 55° 50' N.", long. 38° W. 

 (Comparatively little, much same forms as in morning.) 



Peridinium diver gens (abundant). 



Ceratium tripos (abundant), several varieties. 



Dinophysis atlantica (many). 



Tintinnus denticulatus. 



Coccospheres & Coscinodiscus radiatus (common). 



Globigerina bulloides (few;. 



L imacina retroversa. . 

 Copepoda : — Calanus propinquus (common). 



Oitlwna spinifrons (common). 



I, on bath tap, September 30th, 1 to 6 p.m. 



Coscinodiscus radiatus (common). 



Tintinnus denticulatus (few). 



Peridinium diver gens (abundant). 



Dinophysis atlantica (few). 



Geratium tripos (abundant), several varieties. 



Globigerina bulloides (few). 

 Copepoda : — Calanus propinquus (common). 



Pleuromma abdominale (few). 



Oitlwna spinifrons (few). 



X. September 30th, 7 p.m., to October 1st, 10 a.m. ; 

 from lat. 55° 50' N., long. 38° W., to lat. 56° 10' N., long. 

 31° 40' W. (Rather more material than usual. 



Peridinium diver gens (very large). 



Geratium tripos (abundant), several forms. 



