804 P. T. CLEVE, SOME ATLANTIC PLANKTON-ORGANISMS. 



Peridinium ovatum PoucHET. in 1898. 



May. S. of Iceland. The Färöe Channel. Scotland. The 

 Shetlands. W. of Norway, from 62° N. 4" E. to 6Q" N. 9° E. 

 — At 50= N. 22° W. From the S. of Iceland and W. of 

 Rockall to 28° W. — SW. of Greenland. 



June. N. and S. of Iceland. W. of Norway, i'rom 67° N. 

 10° E. to 68° N. 13° E. — SW. of Spitzbergen. — W. of 

 Portugal, 40°— 41° 39' N. 9° 40'— 9^ W. — SE. of Greenland 

 57° N. 34°— 38° W. — W. of Greenland, 63—66° N. 



July. N. and S. of Iceland, N. of the Färöes. S. of the Shet- 

 lands. — From about 59° N. 21° W. towards Cape Farewell. 



August. SW. and S. of Iceland. The Färöe Channel. 

 The Irish Channel. N. and SW. of Spitzbergen. — East of 

 Greenland, at about 65° N. — At 52° N. 55° W. 



September. N. and S. of Iceland, between Iceland, Rochall 

 and the Färöes. S. of Färöe. — Beeren Island, Spitzbergen. — E. 

 of Greenland, 65°— 66° N., 36°— 31° E. — At 56° N. 35° E. — 

 W. of Greenland from the south end to Disco. 



October, S. of Iceland to the Färöes. — SW. of Cape 

 Farewell. 



November. S. of Iceland. — At öt N. 20' W. — 47° 

 N. 41° W. to 45° N. 52° W. 



December. SW. of Iceland, 68° N. 19°— 21° W. — From 

 42° N. 49° W. to 43° N. 61° W. 



Chsetoceros oonstrictus Gran in 1898. 



March. Abundant at 41° N. 60°— 70° W. and W. of 

 Norway, at 58° N. 6° E. 



April. NE. of the Azores at 39° N. 24° W. — At 40 

 N. 70° W. 



May. Not rare from 59' N. 9° W. to the Shetlands, 61" 

 N. 1° 30' W. (abundant). 



June. Rare S. of Iceland. 



July. Not rare N. of the Orkneys. 



