II. Flagellatæ. 

 A. Chrysomonadineæ. 



Diuobryon Ehrbg., 1838. 



1. Dinobryon pellucidum Le vander, Acta Soc. Fauna & Flora 

 Fenn., 12, No. 2, 1894, p. 31, pi. 2, fig. 1 ; Dinodendron balticum Schüii: 

 Dinobryon b. Lemmermann, Ber. Deutsch, bot. Ges., 1900, p. 514, 

 pi. 18, figs. 9— 10; Nord. Plankton, XXI, p. 4, figs. 13-14. 



Single specimens occurred in a sample from Danmarks Havn in 



1906, but besides that the species was distributed in the outer parts 



of the pack-ice, east of ca. 12° W. Long., in some samples it was 



common, especially in 1908 (in 1906 found only in two .samples). 



When the temperature rose above 7'^ and the salinity over 34*^'oo it 



disappeared. July — August. 



D i strib. A boreal neritic species, known from the coastal waters of 

 Greenland, Iceland, Spitsbergen, Norway-, Færoes and the Baltic. 



Phæocystis Lagerheim, 1893. 



2. Phæocystis Pouchetii (Hariot) Lagerh., Botan. Notiser, 1893, 

 p. 32; Ofv. K. Sv. Vet. Akad. Forhandl., 1896, p. 277, figs. 1—5; Osten- 

 feld, Arch. f. Protistenkunde, III, 1904, p. 295, fig. 1. 



Found scattered over the area, in two samples of 1908 rather 



common, but not in great quantities, probably because the season 



has been too late. Not seen in the samples taken in Danmarks 



Havn, but only recorded from the coastal water and the pack-ice. 



July— August. 



D i strib. A boreal-arctic neritic species which often plays a conspicu- 

 ous part in the plankton, f. i. in Davis and Denmark Straits, around Iceland, 

 off northern Xorwav, etc. 



B. Coccolithophoridæ. 



Coeeolithophora Lohmann, 1902. 

 3. Coeeolithophora pelagiea ( Wallich) Lohmann, Arch. f. Proti- 

 stenkunde, I, 1902, p. 138; Coccosphœra p. Wallich, Ann. Mag. Nat. 



