14 



Caroline Leegaakd. 



Skeletonema costatum (Geev.) 



1866 Melosira costata Greville, p. 77, pl. 8, f. 3 — 6. 



1878 Skeletonema costatum Cleve, p. 18. 



1883 Van Heurck Synopsis, pl. 91, f. 4, 8. 



1893 Schott, p. 568, pl. 30, f. 1—2. 



1898 Karsten, pl. 1, f. 1—7. 



1900 Schutt, p. 482, pl. 12, f. 1 — 10. 



1908 Gran, p. 15. 



1910 Meunier, p. 259, pl. 28, f. 33-36. 



Some few délicate chains were found at stations F 61, F 30 and F 23. The dia- 

 meter of the cells was 4 u. 



Thalassiosira baltica (Grun.). 



(Fig. 13.) 



1880 Coscinodiscus polyacanthus v. baltica Grunow, at Cleve and Grunow, p. 112. 



1884 Grunow, p. 81, pl. 3, f. 17 a— b. 



1891 Coscinodiscus balticus Cleve, p. 68. 



1901 Thalassiosira baltica Ostenfeld, p. 290. f. 3. 



1908 Gran, p. 18. 





,C^5^.,__ 



MBÊLA-) 



Fig. 13. Thalassiosira baltica. 

 1150 



1 

 U00 



1 



a. Cell in front-view 



b. Cell in side-view 



Tom. XLV111. 



