DI.VTdMACK.K NAVICCLA, MTZSCIIIA HHIJ 



Temperature: ".... ineim of ;> obs.. iii;i.\. — f) i, rniii. — O.r,. 

 Salinity: .'!.■) m. max. IJ^J.ts, inin. ;i2..i.-,. 



Plankton-type. Found at K. and W. (iiccnland, in Hudson 

 liay, IJaront's Sea and tlu' llallic — A//. 



NAVICULA MEMBRANACEA Cr.. 



(A Treatise on tlie Pliylo planklon I'l. II lig 25—28. 



lcS98 Mnrrh: 21 N. \^ \V.; 1:5 N. 18^ W.; 12 N. (Wi W, 

 April: 29 N. 24- W. 

 XnrciiihiT : 42- N. (ii W. 



Temperature: lo.^, mean of ;'> ol)s.. max. 17.,-,. niiji. !.'». 

 Salinity: .'>o.i7 and H5..->4. 



Plankton-type. I have seen llii.s .species in samples from the 

 Red Sea. Lkmmkkmaw mentions it from New Zeahmd. — .S. 



NAVICULA SEPTENTRIONALIS OKsTuir.' 

 f Marine Diatoim^er fra Ostgroiiiand Khhn. 1896 PI. Vlil f. !)7.i 



1898 Ji'/>r: m- N. 54^ W. 



1899 Mai/: lb" N. 2^ HO' K. 

 Jii/(/: 74 N. 20- \V. 



Temperature: — 1 to H.i. 

 Salinity: 29...-, to ^4...... 



Plankton-type. Noted from K. and \V. (ireenhind and the 

 r.altic. — A//. 



NITZSCHIA DELICATISSIMA Cl.' 



(A Treatise on tlie Pliyto-|.lankton. PI. II lig. 22.) 



1898 Aj,/-i/: 59 N. 22^—28" W., common. 



Mai/: r)9^ N. lo'— 15' W.; Faroes, common; 57—00- N. 28' 

 \V.; (K)-— 58' N. 81'— H5 \V., common. 



Ostenfeld's data used. 



