C. H. Ostenfeld: A List of Phytoplankton from the Boeton Strait, Celebes. 



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Fig. 4. Biddulphia sinensis Grev., a very large cell, probably the cell which 

 comes from the auxospore. (Drawn by Dr. Justesen.) 



Chaetoceras coarctatum Lauder, Trans. Microc. Soc, London, 

 1864, p. 79, pi. 8, fig. 8; Cleve, Bih. Sv. Vetensk. Akad. Handl., Bd. 1, 

 No. 11, 1873, p. 9, pi. 2, fig. 10; G. Karsten, Deutsche Tiefsee Exp. 

 1898-99, Bd. 2, Teil 2, 1906, p. 166, pi. 31, fig. 3. 



Common in the plankton of Boeton Strait, both found in the 

 sample and drawn by Dr. Justesen. 



Ch. compressum Lauder, 1. c., 1864, p. 78, pi. 8, fig. 6; Cleve, 

 1. c., 1873, pi. 8. 



Drawn by Dr. Justesen. 



Ch.didymum Ehbg.; Cleve, Bih. Sv. Vetensk. Akad. Handl, Bd. 20, 

 III, No. 2, 1894, p. 13, pi. 1, figs. 3-4; Gran, Diatom, in Nord. 

 Plankton, 1905, p. 79. 



As the foregoing. 



Ch. diversum Cleve, 1. a, 1873, p. 9, pi. 2, fig. 12; Gran, 1. c., 

 1905, p. 87. 



As the foregoing. 



Ch. furca Cleve, A Treatise of the Phytoplankton, Upsala, 1897, 

 p. 21, pi. 1, fig. 10; Karsten, Deutsche Tiefsee Exp. 1898-99, Bd. 2. 

 Teil 2, 1906, p. 169, pi. 32, fig. 13. 



As the foregoing. 



Ch. Lauderi Balfs, in Lauder, 1. c, 1864, p. 77, pi. 8, fig. 4; 

 Ch. Weissflogii Schutt, Ber. Deutsch, bot. Ges., 1895, p. 44, lig. 17; 

 Gran, 1. c, 1905, p. 77. 



As the foregoing. 



Ch. Lorenzianum Grunow, Verhandl. k. k. zool.-botan. Ges. Wien, 

 1863, p. 157, pi. 14, lig. 13; Gran, 1. c, 1905, p. 76. 



