ÖFVERSIGT AF K. VETENSK.-AKAD. FÖRHANDLINaAR 1899, N:0 8. 795 



Rhizosolenia obtusa Hensen in 1898. 



March. W. of Norway at 58° N. 6° E. 



April. NW. and S. of Iceland. 



May. W. of Jan Mayen (70°— 72° N. 13° W.). — At 61° 

 N. 11" W. — The Shetlands. — W. of Norway, 60°— 62° N. 

 2°_3° E. — WSW. of Greenland (58°— 60° N. 35°— 38° E.). — 

 S. of Greenland (59° N. 49° W. and 63° N. 54° W. 



June. N. of Iceland (69° N. 15° W.). — Sound of Den- 

 mark. — SE. of Iceland (62° N. 14° W.). — W. of Norway 

 (62° N. 2° E.). — SE. of Beeren Island. 



July. W. of Spitzbergen. 



August. N. and SW. of Spitzbergen. 



September. S. of Spitzbergen. — SW. of Greenland. — 

 At Disco. 



December. At 41° N. 66° W. 



Cyttarocylis denticulata Ehb. s. 1. ^) 



January. At 37° N. 73° W. (E. of Chesapeake.) 



March. At 61° N. ll°-26° W. 



April. S. and SW. of Iceland, Färöe Channel, the Shet- 

 lands — N. of Rochall — Irminger Sea, from 59° N. 22°— 28° 

 W. to the S. of Greenland, 57°— 58° N. 43°— 50° W. — New- 

 foundland banks from 42° N. 47° W. to 43° N. 50° W. 



May. Between Jan Mayen and Greenland — S. of Iceland 



— The Färöes. — W. of Norway, from 58° N. 2° -5° E. to 66° 

 N. 9° E. — Between Scotland, East Greenland (63° N. 38° W.) 

 and 57° N. 28° W. — From the Newfoundland banks (42° N. 

 50° W.) to 40° N. 72° W. 



June. N. and S. of Iceland — The Färöes to 62° N. 2° 30' E. 

 and to Scotland and N. of Rockall. — W. of Norway from 67° 

 N. 10° E, to Trorasöe, Beeren Island and the SE. of Spitzbergen. 



— At 57° N. 34°— 38° W. — S. of Cape Farewell to Disco. 



') Having mapped out the distribution of the new and nearly allied species, dist- 

 inguished by Brandt and Ostenfeld, and having convinced myself that their 

 distribution is identical, I have included all under the above name. 



