COPEPODA PLEUROMMA 81 



October: 52° N. 14° W. (not rare) to 56° N. 25° W. (common). 

 November: 51° N. 21° W., rare. 



Temperature: 15.9, mean of 30 obs., max. 28.2, min. 8. (Only 

 such samples considered as contained this species in any abundance). 



Salinity: 34.88, mean of 30 obs., max. 36.52, min. 31.oi. 



Plankton-type. Noted from the Indian, Pacific and Mediterra- 

 nean. It occurs in the Atlantic both in the eastern and western 

 part. In the east it goes west of the Cape of Good Hope, in the Gulf 

 of Guinea to Cape Verde, the Azores, the English Channel, the Faroe 

 Channel and the North Sea at least to 61° N. In the west it has 

 been seen at Rio Janeiro, along the north coast of S. America and 

 in the Caribbean Sea, besides above the Newfoundland Banks. — S. 



PLEUROMMA ABDOMINALE (Lubb). 



1898 January: 16° N. 18° W. 



February: 48° N. 41° W.; 50° N. 31° W. 

 March: 40° N. 56° W. 



1899 November: 49° N. 40° W., rare. 



Temperature: 13.?, mean of 4 obs., max. 20, min. 11. 

 Salinity: 35.1? (one observation). 



Plankton-type. Noted from the Mediterranean, Indian and 

 Pacific, in the Atlantic from the Canaries. — .S. 



PLEUROMMA GRACILE Claus 



1898 February: 48°— 50° N. 41°— 31° W. 



March: 47° N. 27° W. to 40° N. 64° W.; Azores. 



May. 48° N. 30° W to 41° N. 54° W. 



June: 48° N 33° W. 



July: 48° N. 30° W. 



September: 33° N. 31° W. ; 35° N. 30° W.; 44° N. 16° W. 



November: 48°— 49° N. 29°— 28° W. 



1899 January: 48° N. 39° W. 

 November: 49° N. 40° W. 



Temperature: 15 6, mean of 18 obs., max. 25.8, min. 11. 

 Salinity: 35,69, mean of 16 obs., max. 36.«, min. 34 le. 



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