NOETH ATLANTIC PLANKTON. 49 



Coscinodiscus radiatus. 

 Euthemisto compressa. 

 Limacina retroversa. 

 Copepoda : — 



Calanus finmarchicus (common). 

 Oithona spinifrons (few). 

 Ectinosoma atlanticum (few). 



11. August 10th, 9 a.m. to 6 p.m. ; from lat. 55° 22' K, 

 long 44° 11' W., to lat. 54° 30' N., long. 47° 28' W. ; 51° F. 



Nets on overflow pipe had quantities of large red Calanus 

 finmarchicus ; the nets on tap had only a few Calanus, 

 and the outer finer net had only Diatoms and Dinoflagel- 

 lates ; 30 cc. in all. 



Coscinodiscus radiatus. 

 Ceratium tripos. 

 Peridinium diver gens. 

 Globigerina bulloides. 

 Sagitta sp. 

 Annelid larva (?) 

 Euthemisto compressa. 

 Nyctiphanes norvegica. 

 Copepod Nauplei, and 



Calanus finmarchicus (common). 

 Euchaeta marina (few). 

 Oithona spinifrons (few). 



12. August 10th, 7 p.m., to August 11th, 9 a.m. ; from 

 lat. 54° 30' N„ long. 47° 28' W., to lat. 52° 55' K, long. 

 52° 40' W. ; 125 cc. 



The coarser net on overflow pipe had the very large red 

 Calanus and Euchceta, and a few large Amphipods. The 

 finer net had a large mass of grey stuff, chiefly Copepoda. 

 The coarser net on the tap had a number of red Calanus 

 and Euchceta, and some larval Schizopods, while the 



