^28 DINOI'LAGELLAT^ — f.ERATIUM 



Xiircniber: IH S. 36'' W'.; Azores; 'iV' N. 6() W. to 47' N, 



11° VV.; 51° N. 2(f W.; 36° N. 14° W. 

 December: Canaries; Azores; 41° N. 66° W. to 19' N. ^r)W., 



at some points common. 

 1899 January: 34° N. 12^ W., rare; 41°— 40° N. (19^—66° W. 



March: Azores; 46" N. U" W,; 47° N. 8" W., everywhere 



rare. 

 April. 41° N. 17^ W.; 46° N. 13' W., rare. 

 Matj: 2rr S. 7° E.; 49°— oO" N. 39°— 33° W; 57° N. 3°— 9' 



E., rare to common; 59° N. 2" E,, very rare. 

 June: 7^—9° N. 25'" W.; 24° N. 42° W.; 64°— 67" N. 7^— 



11° E.. common 1o rare. 

 July: 12" N. 27" W.; 35°— 38° N. 40" W.; 4i°— 49' N. 33"— 



23" W., rare; 62" N. 0" W., rare. 

 August: 48° N. 17° W., rare; 60° N. 3° E., common; 72' N. 



26° E., very rare. 

 September: 56° N. 33° W., rare; 60° N. 3" E. to 62° N. 1° E., 



very common, thence rare to 67° N. 4° W.; 72" N. 19' E. 



(very common) to 77° N. 14° E. (rare). 

 October: 56° N. 23° (rare) and 31° W. (not rare). 



Temperature: 12.3, mean of 20 obs., max. 24.2, min. 7.9 (only 

 such samples as contained this species abundantly considered). 



Salinity: 34.i8, mean of 19 obs., max. 35.85, min. 30.62. 



Plankton-type. The principel area of distribution is in the 

 spring between the Azores, New York and the British Islands. It 

 enters the North Sea, north of Scotland, and follows the Scandina- 

 vian coast into the Skagerak and to the north of Norway. In June 

 1898 it was seen scattered in several parts of the tropical Atlantic. It 

 occurs in the Indian Ocean. — .S. 



CERATIUM PARADOXIDES Cl. 



(K. Sv. Vet. Akad. Handl. Vol. XXXIV n. 1 PI. VII fig. 14) 



1898 March: 37° N. 24° W. 

 September: 46° N. 39° W, 



1899 January: 33 N. 15° W. 



Temperature: 17.3, mean of 3 obs., max. 18.4, min. 17. 



