"^"y DINOFLAGELLATJv- STEIXIELLA 



J«//r: area between 1(1 N. 5H W., 19" N. (iH W., ;'i;V N. 



48 W and 20" N. -Hr W.; 42 N. 50" W.; 48° N. HH" W'.; 



()0^ N. 4 AV 

 ./h/^: Caribbean Sea; 25 — 38° N. TT \V ; 41 X. (iO W., 



14 N. 8',r W.; 31" N. :!9' W. 

 Aiigiisi: 22' N. 7i" W. to 34 N. 73" W.; 40' N. 67'' W. to 



12' N. 50° W.; Azores; Bl° N. 8- W. 

 Sipcinhr/-: 12° N. 27° W ; 9" N. 53' W.; 25' N. 74' W.; 



47' N. 33 W.; Azores; 59' N. 2' W. to fiO' N. (>' W.; 



66° N. 18 \^^ 

 ()(iohrr: 34° N. 74' W.; 5S- N. 32' W. to HO' N. 3- W. 

 Xan'/iilxv: 8' N. 28° W.; Cape Verde Islands; 22- N. 53' W ; 



47° N. 41° W.; 60'— 61° X. 1°— 5' W 

 December-: Caribbean Sea; Canaries. 

 1899 May: 35" N. 75° W. 



June: 20" S. 1° E. to 4' 8. 19' W.; ,15' N. 50' W.; 21' N. 



45' W. 

 July: 11° N. 26 W.; 40' N. 38' W. 



Temperature: 23.5, mean of 77 obs., max. 28.2, min. 7. 



Salinity: 35 to, mean of 57 obs., max. 37.o5, min. 33. 20 (excep- 

 tionally 20.27). 



Plankton-type. Occurs in the Red Sea, the Indian ( )cean 

 and the Pacific. It enters the Atlantic W. of S. Africa, advances 

 towards the Cape Verde Islands, follows the Equatorial Current into 

 the Caribbean Sea, the Florida Current and spreads into the Sar- 

 gasso Sea. It goes in July— August beyond 40° N. and advances 

 thence towards Iceland and the Faroe Channel as well as towards 

 the Azores and the Canaries. In the North Sea it enters the Tripos- 

 plankton. — 1). (S). 



STEINIELLA FRAGILIS SchOtt. 

 (D. Peridineen d. Plankton-expedition PI. VI fig. 2li 

 1898 July: 39' N. 23" W. 



