858 P. T. CLEVE, ON THE ORIGIN OF »GULF-STREAM WATER». 



these styli-plankton organisms are confined exclusively, or nearly 

 so, to the eastern Atlantic. Sonie have a very wide ränge of 

 distribution and occur both in the eastern, western and northern 

 Atlantic, or round the Sargasso Sea. 



It will be found from the following data that such styli-plankton 

 organisms as have a very wide ränge of distribution follow 

 both the eastern side of the Atlantic, or along the coasts of 

 Africa between the Azores and Europé, and the equatorial 

 current towards South America into the Caribbean Sea, and 

 thence the Antilles and Florida currents towards the Newfound- 

 land banks and farther to about 45° to 50° N, where they seem 

 to unite with those coming from the east Atlantic. They 

 proceed then to the north, towards Iceland and the Färöe 

 Channel, and a small number finally reach Spitzbergen. 



Corycseus rostratus Claus. 



I choose this species as representing forms, which have been 

 found both in the Benguela current and in the Azores region. 



1898 March, The Azores and at 40° N. 56° W. (S. of 

 the Newfoundland banks). 



June. The Azores and at 35° N. 21° W. 



July. Round the Azores. 



August. The Azores and from 40° N. QG" W. (the New- 

 foundland banks) to 45° N. 40° W. 



September. Cape Verde Islands. Madeira. The Azores 

 and at 46° N. 39° W. 



October. Round the Azores and at 39° N. 21° W. 



November. The Azores. At 48° N. 29°— 41° W. At 

 34°— 36° N. 10°— 14° W. (W. of Gibraltar). — At 18° S. 31° W. 



December. The Canaries. From 34° N. 38° W. to 42° 

 N. 16° W. 



1899 January. The Canaries, Madeira, Gibraltar. 

 February. At 34° N. 40° W. 



March. From 36° N. 29° W. to 44° N. 16° W. 



