870 P. T. CLEVE, ON THE OEIGIN OF »GULF-STREAM WATER:!>. 



between 55" and 48^ N., so it looks as if the water in which this 

 species occurs had been covered by another sheet of water which 

 disappeared in November. Chalhngeria xipliodon also points to 

 the same conclusion. 



Rhizosolenia styliformis Btw. ') 



1898 January. From Cape Verde to 0^ 26° W. The North 

 Equatorial current, from 7" N. 53° W. to 14° N. 49° W. — 

 The Caribbean Sea. The Florida current, 25=— 32° N. 74° W. 



— From the Azores to 46° N. 11° W. — At 63° N. 20= W. 



February. The Caribbean Sea and the Bahamas. At 26° 

 N. 74° W. The mouth of the English Channel, 50° N. 10° W. 



— At 63° N. 17° W. 



March. At 4° S.— 0°, 10—15° W. Cap Verde, 18° N. 

 18° W., south of the Canaries, 25° N. 16° W. From the south 

 of the Azores, 33° N. 32° W., to the mouth of the Channel. 



— Rare at some points in the Sargasso Sea, at 15° N. 49° W. 

 and 25° N. 41° W. — The Caribbean Sea. — The Florida 

 current at 28°— 32° W. 74° N. From 40° N. 68° W. and 40° 

 N. 72° W. to 51° N. 27° W. and the English Channel. 



April. The North Equatorial current, 7°— 10° N. 55°— 53° 

 W. — The Caribbean Sea. — The space between 34° N. 75° 

 W., 40° N. 70° W., the English Channel and 41° N. 19° W. 

 Very rare from 58° N. 38° W. to 59° N. 22° W. and at 60° 

 N. 4° W. 



May. The space between 11° N. 52° W., 16° N. 71° W. 

 and 23° N. 56° W. From New York to the English Channel. 



— Very rare in Davis Strait, 63° N. 54° W. — From the 

 Azores to the English Channel. — The space between 57° N. 

 38° W., 61° N. 28° W., 60° N. 9° W. and 57° N. 25° W. 



June. From 19° N. 63^ W. to 31° N. 50° W. - At 41° 

 N. 59° W. and 45° N. 41° W. The space between 45° N. 26° 

 W., 42° N. 9° W. and 48° N. 17° W. — The space between 

 the south of Iceland, the Fäiöes and 60° N. 9° W. 



') OsTKNFELu's data used. 



