860 P. T. CLEVB, ON THE ORIGIN OF »GULF- TREAM WATER». 



August. The Azores. From 49° N. 20° W. to 41° N. 

 65° W. 



September. At 33° N. 31° W. The Azores. Frora 41° 

 N. 20° W. to 47° N. 9° W. Frora 48° N. 29° W. to 41°— 42° 

 N. 56' W. 



October. Madeira, 33° N. 16° W. From 37° N. 26° W. 

 to 42° N. 15° W. — At 56° N. 31° W. and 48° N. 38° W. 



November. Cape Verde, 20° N. 23° W. A t 34° N. 10° 

 W., 36° N. 14° W. and the Azores. Bay of Biscay, 45° N. 7° 

 W. The Space between 51° N. 20° W., 55' N. 36° W., 53° N, 

 50° W. and 40° N. 67° W. 



December. The Canaries, 30° N. 16° W. The Azores. 

 The Sargasso Sea at 25° N. 51° W. and 34° N. 38° W. At 

 38° N. 39° W., 50° N. 20° W. and 48° N. 40° W. 



1899 January. From the Canaries towards Gibraltar, 32° 

 N. 16° W. to 35° N. 9° W. 



February. In the Sargasso Sea at 32° N. 46° W. and 

 34° N. 40° W. 



Mar eh. From 30° N. 35° W. to 47° N. 8° W, nowhere 

 common. 



April. Very abundant between 37° N. 10° W., 43° N. 

 15° W. and 41° N. 18° W. Rare at 48° N. 9° W. 



May. Rare at 50° N. 33° W. The Benguela current, from 

 33° S. 16° E. (common) to 25° S. 7° E. (not common). 



June. W. of S. Africa from 20° S. 2. E. to 14° S. 7° E. 



The total distribution of Ciausocalanus arcuicornis in the 

 Atlantic is thus from the west of S. Africa (Benguela current) 

 to the Gulf of Guinea, Cape Verde, the Canaries towards Gibral- 

 tar and the Azores, between the Azores, the mouth of the 

 English Channel and to the east of New York. The area of distri- 

 bution was in March and April chiefly eastern, but in May it 

 had advanced considerably towards the west. In October and 

 November this area had greatly advanced to the north, above 

 55° N. In December and February this copepod was seen rarely 

 on sorae isolated spots in the Sargasso Sea. 



