H2S ItlATO.MAC.K.H- - (lOSSI.ERlKIJ.A, HIUXAHDIA 



GOSSLERIELLA TROPICA Scmutt. 



(V^\ Hki lu.K Treatise on the Diatomactie pag. 513). 



18M7 DficinbiT: and 



IS(),S January: \V1' -HI- X. Hll — HO W.; H5'' N. 71 W., rare. 



February: HI' X. 7r!'^ W., rare. 



Dccci liber: Azores, rare. 



Marcli: H7" X. 2ir W., very rare. 



Temperature: 1H^. mean of (i dbs., max. ■2().», min. 1.5. 7. 

 Plankton-type. My .specimens were found in Styli- and Des- 

 mo-plankton intermingled. — NP ])? 



GUINARDIA FLACCIDA (Castk.)' 



iH. Pera(,ai.i.o Le niatomiste PI. XIII fig, 3—5) 



189S January: 1(r-^21° N. 18°— 20° W. 



March: 21° N. 18= W.; \-l° N. 60° W. to 1-2° X. 12° W. 



April: 47°— 48° N. 10^— 33° W. 



May: 42° N. fil° W., 18° X. :5H^ W. 



Aiujin^t: 63° N. 8° W. (very rare) to 58° X. 2° W. (common at 



60° N. 3° W.) 

 Scpti-nihrr: 59° X. 2° W. (rare); H0° N. 2 \V. (common). 

 ■ Octobnr: 11° N. 67° W,, not rare. 

 Noveiiibrr 51° N. 2(P W., common; 1-2 N. 61° W. to 1-7- X. 



41° W., not rare. 

 DrreiuJirr: 18- X. 68^^ W., rare; 11° X. 6H- W. to 13' X. 



58° W. 

 1899 January: 1-1° N. 69 W., not rare; 15' X. 49' W. 



Temperature: 12.8, mean of 25 obs., max. 2().s, min. H. 



Salinity: HI.t-, mean of 22 obs., max. 36.ii, min. Hl.ini (very 

 common, when salinity 32.99). 



Plankton-type, Occurs in the Mediterranean, the Xorth Sea 

 and the Skagerak. — Xm. 



Ostenfeld's data used. 



