1901] . The Hydrography of the North Ocean. 29- 



St. 6. 16 / 6 1897. 30 miles N. of Jan Mayn. 

 The diatoms preponderating. 



Calanus-l&rvdd r. 



0. similis r. 

 The plankton in 4, 5, 6 is of the same character, with 

 diatoms in large mimbers. 

 „ 7. 25 / 8 1897. 15 miles NE. of Jan Mayn. 



Calanus hyperboreus, Q cc. 



Parathemisto oblivia, juniores c. 



Gammazm locusta, Linn. 



var. mutata, Liljeb. rr. 



Pseudalibrotus littoralis 1 ), Krøtee, r. 

 „ 8. 29 / 6 1897. 20 miles NNE. of Jan Mayn. 

 Many diatoms. 



Calanus hyperboreus, Q cc. 



C. finmarchicus c. 



Oithona similis c. 



Oncæa conifera r. 

 „ 9. y 7 1897. 25 miles N. of Jan Mayn. 



Clione limacina rr. 



Cal. hyperboreus r. 



— finmarchicus rr. 



Oithona similis c. 



Copepoda jun. c. 



Hyperid jun. cc. 



Ctenophora jun. r. 

 „ 10. 4 A 1897. 30 miles N. of Jan Mayn. 



Ctenophora -(-. . 



Parathemisto oblivia c. 



Pseudalibrotus littoralis r. 



Gammarus locusta var mutata rr. 

 „ 11. 5 A 1897. 35 miles N. of Jan Mayn. 



Ctenophora -\-. 

 Hyperid r. 

 „ 12. 10 / 7 1897. 23 miles N". t. W. of Jan Mayn. 

 Many diatoms. 



Oithona similis +. 



L ) The identification of the Amphipocla is due to prof. G. O. Saks. 



