II. Flagellatæ. 

 A. Chrysomonadineæ. 



Dinobryon Ehrbg., 1838. 



1. Dinobryon pellucidum Levander, Acta Soc. Fauna & Flora 

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

 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; Öfv. К. 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 Norwav, etc. 



B. Coccolithophoridæ. 



Coccolitliophora Lohmann, 1902. 

 3. Coccolithophora pelagica ( Wallich) Lohmann, Arch. f. Proti- 

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



