2«)4 '"■ "■ ()sii:m i;i.i). 



In Ihc samples iVom I'.IOC) lliis species was only lomid twice and 



in very lew specimens; also in lilOT, in the samples IVoni Danmarks 



Havn il was rare. In 1908, on llie otlier hand, it was common in 



many of the samples on the whole way from Danmarks Havn through 



the pack-ice. In several samples the cells were very small, so-called 



hunger-specimens. The resting spores (Coscinod. suhglobosus) were 



l)resent in two samples (Septm. 1907, July 19()(S). July August — 



Sej)teml)er. 



Dislril). Xorthern nerilie species widely dislrihiited alonj^ the const 

 bordering the Arctic i^ni] North Atlantic Oceans and their tributaries. 



(i. Thalassiosira bioculata (Grun.) Ostenfeld, lîol. of the Færoes, 

 vol.2, 19();{, Copenhagen, p. 564, figs. 120-121 ; Gran, Nord. Plankton 

 XIX, p. 19, lig. 14; Coscinodiscns b. Grunow, Diat. v. Franz Josefs Land, 

 1884, p. 30 et 56, pi. C, lig. 30, pi. D, figs. 1-2. 



Single individuals were found in several of the samples from 

 Danmarks Havn, the coast water and also in the pack-ice. Chains 

 are not seen and the species was not found in stage of strong growth. 

 Juh' — August— September. 



1) i strib. Xorthern neritic species known from the coast re.Ljions of the 

 northern countries bordering the Davis Strait, northern Atlantic and .\rctic 

 Oceans. 



Bacterosira Gran, 1900. 



7. Bacterosira fragilis Gran, Nyt Mag. Naturvid., Christiania, 

 38, 1900, p. 114: Nord. Plankton, 1905, XIX, p. 21; Laiideria f. Gran, 

 Bibliotheca botanica, Heft 42, 1897, p. 18, pi. 1, figs. 12—14. 



Found very sparingly in samples from Danmarks Havn anrl the 

 coast-water, not in the pack-ice. July — August. 



I) i strib. Arctic neritic s])ecies known from the coasts of the arctic 

 Sea West- and Kast-(ireenland, Sjiitsbergen, Nova Zendda) and from the 

 northern coast of Norway. 



Laiideria Cleve, 1873. 



8. Lauderia glacialis (Grun.) Gran, Nyt Magaz. Naturvid., Chri- 

 stiania, Bd. 38, 1900, p. Ill, pi. 9, figs. 10—14; Nord. Plankton, XIX, 

 p. 23; Podosira hormoides, var. glacialis Grunow, Diat. Franz Josefs 

 Land, 1884, p. 56, pi. C, fig. 32; P. glacialis Cleve, Bih. K. Svenska 

 Vet. Akad. Handl., Bd. 22, afd. 3, No. 4, 1896, p. 12, pi. 2, figs. 17-20; 

 Porosira g. Jørgensen, Bergens Museums Skrifter, 1905, p. 97, pi. 6, 

 fig. 7. 



Rare in the samples, found in Danmarks Havn and in the coast 

 water, not in the pack-ice, July— August. 



Distrit). Northern (subarctic) species known from tlie coastal regions 

 of the arctic Sea and along the coasts of Nortli-Europe (in winter). 



