20 



COPEPODS OF LAST CRUISE OF CARNEGIE 



Between stations 6 and 7 (c) 



A. July 8, 1928; 54° 33' N, 6° 55' E 



B. July 10, 1928; 58° 50' N, 1° 48' E 



C. July 11, 1928; 59° 21' N, 1° 28' E 



12 species 



Location of tow 



B 



Location of tow 



Acartia clausii a 



Calanus minor f 



Centropages hamatus a 



Clausocalanus arcuicornis f 



Eucalanus elongatus f 



Labidocera wollastoni r 



Metridia curticauda. . . . 

 Microsetella norvegica. . 



Oithona plumifera 



Paracalanus parvus 



Pseudocalanus minutus. 

 Temora longicornis 



The interval between June 8 and July 7 was spent in the 

 harbors of Plymouth, England, and Hamburg, Germany. 

 Three surface tows were taken in the North Sea on three 

 different nights as recorded above. Onh^ 2 of the species were 



taken in all three tows, but on the other hand only 4 species 

 were confined to a single tow. The total of 12 species for three 

 night tows is exceptionally small and indicates a restricted 

 copepod plankton. 



Depth of tow, m 

 Temperature, °C 

 Salinity, o/oo 



Station 7 

 July 13, 1928; 63° 20' N, 9° 25' W; bottom depth, 454 m; 11 species 



(pH) 



This station was just east of the southern coast of Iceland. 

 The temperature at the surface was very low and fell less than 

 a degree in the 100 meters; the salinity was exactly the same 

 at all three depths, and the hydrogen-ion concentration varied 

 extremely little. The bottom depth is next to the smallest for 



the entire cruise. Only 3 of the species were confined to a 

 single tow, and 6 were found in all three tows. This is the 

 farthest north for Oncaea during the entire cruise, and this 

 species may well have been brought into this vicinity by one 

 of the ramifications of the Gulf Stream. 



