FIGURES 6-9 



Fig. 6. Variation in C. candelabrum (Ehr.) Stein. A, specimen from station 87, 

 near Tuamotu Islands; B, from station 83, near Tuamotu Islands; C, from station 91, near 

 Samoa; D, from station 48, north of Easter Island; E, from station 97, near Phoenix Is- 

 lands; F, from station 85, near Tuamotu Islands; G, from station 46, warm southeast Pa- 

 cific; H, from station 1, Gulf Stream; I, from station 31, Caribbean Sea; J, from station 

 50, near Easter Island; K, from station 52, near Easter Island. 



Fig. 7. Ceratium furca (Ehr.) Dujardtn. A, specimen from southeastern Pacific, 

 station 79; B, from southeastern Pacific, station 50; C, from off Peru, station 71; D, 

 from north of Hawaii, station 140; E, from southeastern Pacific, station 77; F, from 

 southeast of Greenland, station 10; G, from southwest of Ireland, station 6; H, two-celled 

 chain from station 73, southeastern Pacific. 



Fig. 8. Ceratium belone Cleve. A, specimen from station 49, north of Easter Is- 

 land; B.and C, specimen from station 100, east of Marshall Islands; D, station 53a, Easter 

 Island; E, from station 81, east of Tuamotu Islands; F, from station 18, Sargasso Sea; G, 

 from station 158, northeast of Samoa; H, from station 47, southeastern Pacific; I, from 

 station 94, near Samoa. 



Fig. 9. Ceratium incisum (Karsten) Jorgensen. A, from station 99, north of Phoenix 

 Islands; B, from station 95, north of Samoa; C, from station 158, northeast of Samoa; D, 

 from station 103, north of Marshall Islands; E, from station 98, north of Phoenix Islands. 



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