56 COPflPODA — CLAUSOCALANUS 



1899 Jawmrii: H2^ N. 16° W. to 35° N. 9° W. 

 February : 32° N. 46° W. ; 34° N. 40° W 

 March: 30° N. 35° W to 47° N. 8° W., rare. 

 April: area between 37° N. 10° W., 43° N. 15° W. and 41° 

 , N. 18° W., very common; 48° N. 9° W., rare. 

 May: 50° N. 33° W., rare; 33° S. 16° E. (common) to 25° S. 



7° E. (rather rare) 

 June: 20° S. 2° E. to 14° S. 7° E., rare. 

 October: 53° N. 31° W.; 49° N. 40° W., rare. 

 November: 51° N. 28° W., not rare. 



Temperature: 17.5, mean of 20 obs., max. 22.9, min. 8. (Only 

 such samples considered as contained this species abundantly). 



Salinity: 35.89, mean of 20 obs., max. 36.8o, min. 33.88. 



Plankton-type. This species is noted from the Pacific, along- 

 the west coast of S. America to 53° S. and from the Mediterranean. 

 The total distribution in the Atlantic is, according to the above state- 

 ments, from the west of S. Africa (Benguela current) to the Gulf 

 of Guinea, Gape Verde, the Canaries towards Gibraltar and the 

 Azores, between the Azores, the mouth of the English Channel and 

 to the east of New York. The area of distribution 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 some isolated spots in the Sar- 

 gasso Sea. 



CLAUSOCALANUS FURCATUS (Brady). 



1897 December and 



1898 January: Azores to 7° N. 52° W.; Caribbean Sea; 25°— 35° 



N. 74° W. 

 February: 5° S. 9° E.; Caribbean Sea to 34° N. 73° W. 

 March: 6° S. 4° W. to the Cape Verde Islands and the 



Azores, thence to 7°— 9° N. 55°— 59° W.; Caribbean Sea 



to 28° N. 74° W. 

 April: 7°— 12° N. 55°— 51° W.; Caribbean Sea to 27° N. 75° W. 

 May: area between 32° N. 36° W., 6° N. 56° W. and 20° N. 



60° W.; Caribbean Sea; 41° N. 65° W. to 41° N. 51° W. 



