DlATOMACEy^l': — DACTYLIOSOLOA' 82H 



DACTYLIOSOLEN ANTARCTICUS Castr.i 



(Cliallenger Exp. Diat. PL IX lig. 7). 



FchrtKtry: KO'^ N. 8° W., very rare. 



March: 11° X. L'l°— 28° W. to WV N. IH- W. 



April: area between 8U" N. 21'' W., \sy N. !)" W. and 1-7- N. 



82^ W. 

 May : i-S"— lit" N. 2(r"— t f" W.; area between oX'- N. 28' W.; 



the Faroe Channel and Hl° N. 1° 80' W. 

 June: HO- N. H" W. to ()2^ N. 2' 80^ E. 

 July: from liO'- X. 28- W. along 59°— ()2^ N. to 0° 20' W. 

 August: o()° N. 81° W.; N. and S. of Iceland to the N. and 



S. of the Faroes and to the Shetlands. 

 Si-],tfinber: 5(i° X. 2H° W. to 57° X. 11° W.; X. and S. of 



Iceland to the Faroes, the Shetlands and the Orkneys. 

 Ocrohtw: S. of Iceland to 5'.)° N. 8° W. and thence to oH- N. 



82° W. and 5(;' N. 211° W. 

 Xovcinhi'r: S. of Iceland to the Faroes and the Shetlands; 



5(i° X. 28°— 8t)° W. 

 IHllil March: 8.5° X. 1()° W.. rare; 17° N. .s° W, rare. 

 April: i(i° X. 18' W. and W- N. 0^ W., rare. 

 Xovciiibcr: 51° X". 18 W., rare. 



Temperature: 11. ;, mean of io obs., max. 15.8, min 7. 



Salinity: 85.3?, mean of 81- obs., max. 85.ii4, min. 88.78. 



Plankton-type. This species is very characteristic for the 

 S(yli-plankton of the eastern and norlhern Atlantic. It occurs 

 abundantly the Antarctic Ocean (Castrac). — .S. 



DACTYLIOSOLEN HYALINUS Cl. 



(K. Vet. Akad. Handl. Vol. XXXIV n. 1 PI. VII fig. 33.) 



1898 January: 81° X. 78° W. 

 February: ,84° N. 71° W. 

 March: 11° X. t)(r W. to 15° X. 8f)° W. 



Ostenfeld's data used. 



