NORTH ATLANTIC PLANKTON. 65 



XV. October 2nd, 9 a.m. to 7 p.m. ; from lat. 56° 30' N,, 

 long. 22° W., to lat. 56° 22' N., long 18° 43' W. Nets on 

 overflow pipe. 



A canthometra pellucida (few) . 

 Globigerina bulloides (few). 

 Perldinium diver gens. 

 Ceratium tripos. 

 Euphausia sp. (many young). 

 Euthemisto compressa (all immature, abundant). 

 Hyperia promontorii, Steb. 

 Sagitta sp. (few). 

 Creseis acicula. 

 Young Syngnathid fish. 

 Copepoda, many small, including : — 

 Acartia longiremis (abundant). 

 Centropages hamatus (few). 



XVI. October 2nd, same time and locality as XV. 

 Nets at tap (brilliantly phosphorescent). 



Peridinium divergens. 



Ceratium tripos (common), several varieties. 



C.fusus (common), and C.furca (common). 



Globigerina bulloides (common). 



Haliomma sp. 



Stylodictya heliospira (?). 



Pteropods. 

 Copepoda: — Calanus finmarchicus, and C. tonsus 



Acartia longiremis, and A. discaudatus. 



Pseudocalanus elongatus (abundant). 



Euchceta philippi (several). 



Centropages typicus (common). 



Oithona spinifrons (common). 



Mtidius armatus (several). 

 M, on bath tap, October 2nd, 3 p.m. to 7 p.m. 



Globigerina bulloides. 



