3H4 DIATOMACK-M — XITZSCHIA 



.lif/zc: Fiiroes, rare to common; Denmark's Sound, common. 

 Jii/y: V-Aroe Channel; BO"— 58'' N. 23"— 32'' W.; common. 

 Aiifjiisf: Westmannao, common; 65" N. 33 W.. not rare. 

 Scjtrcitihc/': Faroes, very common; H4 N. 32 W., connnon-; 

 ♦ii- x\. 3r \V., rare. 



Temperature: ^.a, mean of 15 ob.s.. max. 11. min. 5..-;. 



Salinity: vU.its, mean of 15 obs., max. 35.43, min. 34.oo. 



Plankton-type. The abundant 0(?currence of this species in tiie 

 spring in the northern Atlantic makes it probable that it belongs to 

 the Cha^to-plankton. — ('.':' 



NITZSCHIA FRIGIDA (Irlx. 



Gran Bibliotheca botanica llcff. 42 I'l. 1 iii;. 11. 1 

 IS^Ii) Jit/i/: 74—75" N. 20-— 18^ W., rare. 



Temperature: — O.s to — o.«. 

 Salinity: 29. <..-,. 



Plankton-type. Noted from K. and W. (Jreenland, llarent's 

 Sea, Kara Sea and the Haltic IJay of Finland. Aland\ — A//. 



NITZSCHIA LINEOLA Cr.. 



iFifteentli annual report of Llie Fisliery Board for ScoUand, for lS!)(i 

 pag. 300 lig.' 11.) 



1898 Marrh: Azores; IF N. 23' W.; 44' N. 17' W. 

 April: Azores; 5(f N. 9' W.; 49' N. 22—25' W. 

 Aiif/iisr: Azores. 



Temperature: lis, mean of 7 obs., max. 23.?, min. ll.i'. 

 Salinity: 35. to, mean of i obs., max. 35. st, min. 35.]?. 

 Plankton-type : N 



NITZSCHIA PUNGENS Cuux. 



Ci.EVE A Treatise on tlic t'tiytop-lankton t'l. II )ig. 23.) 



1898 Miirrh: 7 N. 55" \V. 

 Jiuir: 10' N. 53" W. 



