ÖFVERSIGT AP K. VETENSK.-AKAD. FÖRHANDLINGAR 1899. N:0 9. 861 



As this species does not occur in the western Atlantic, south 

 of 40° N., it is irapossible to admit that it had been drifted by 

 the Gulf-streara towards the Newfoundland banks. 



Acartia Clausa GiESBR. 



This copepod belongs strictly to the eastern Atlantic, but 

 proceeds farther to the north than the preceding one. 



1898 Mar eh. The Azores. Between Scotland and Norway, 

 60°— 63° N. 4°— 2° E. 



April. From the Azores to 49° N. 18° W. and the English 

 Channel (50° N. 2° 40' W.). At 58° N. 1° 35' W. 



May. At 49° N. 14° W. From the Färöes to Norway, 

 58'— 64° N. 6° E. 



June. From the Azores to 46° N. 24° W. and the coast 

 of Portugal to Cape Finisterre. From the Färöes to Norway 

 (62° N. 2° 30' E. to 67° N. 10° 30' E.). 



July. The Azores. SW. of Ireland (50° N. 10°— 11° W.). 

 The Färöes. The Shetlands. 



August. From 49° N. 20° W. to 56° N. 13°— 28° W., 

 round Scotland to 60° N. 3° E. South of Iceland. 



September. S. of the Azores, 30° N. 34° W. The English 

 Channel. Along 56° N. from 28° to 12° W. North of Iceland. 

 Between Scotland and the Shetlands. North of Norway, 71° N. 

 20° E. 



October. Along 56° N. from 31° to 10° W. The Färöes. 



November. Along 55°— 56° N, from 30° to 14° W. The 

 Färöes. 



December. The Färöes. 



The Acartia Clausii lives at the Azores for the greater 

 part of the year, advances in April towards the English Channel, 

 in August to the region west of Scotland and reaches south Ice- 

 land. In September it arrives at the north side of Iceland. From 

 the region between Iceland and Scotland it proceeds towards 

 Norway and follows the coast of Norway to the north of Tronisöe. 

 It remains in the Färöe region in the winter and the spring. 



