174 



DISCOVERY REPORTS 



St. 451. 13/14. x. 30. 47 19!' S, ii° 05' E. 100-om. 



Temp. 5-15° C. Salinity 33-86 % . />H 8-13. P 2 5 91. 



Dactyliosolen antarcticus Castracane 

 Planktoniella sol (Wallich) Schiitt 

 Fragilariopsis antarctica (Castracane) Hustedt 

 Rfrizosole?iia hebetata Bailey 

 Coscinodiscus excentricus Ehrenberg 

 Asteromphalus heptactis (Brebisson) Ralfs 



Coscinodiscus variolatus Castracane 

 Corethron criophilum Castracane 

 Hemidisciis cuneiformis Wallich 

 Chaetoceros atlanticum Cleve 

 Chaetoceros pelagicum Cleve 



St. 452. 14. x. 30. 49 50' S, 8° 32!' E. 100-0 m. 



Temp. 1-94° C. Salinity 3379 °/ 00 . pH 8-09. P 2 5 79. 

 Fragilariopsis antarctica (Castracane) Hustedt Hemidisciis cuneiformis Wallich 



Planktoniella sol (Wallich) Schiitt Tropidoneis antarctica Grunow 



Corethron criophilum Castracane Coscinodiscus oculoides Karsten 



Chaetoceros dichaeta Ehrenberg 



St. 453. 16/17. x. 30. 54° 06' S, 4 00' E. 100 

 Temp. - i-6o° C. Salinity 34-07 % . pU 



Corethron criophilum Castracane 

 Fragilariopsis antarctica (Castracane) Hustedt 

 Dactyliosolen antarcticus Castracane 

 Coscinodiscus lentiginosus Janisch 

 Tropidoneis antarctica Grunow 

 Asteromphalus heptactis (Brebisson) Ralfs 

 Chaetoceros radiculum Castracane 



-o m. 



7-98. P 2 5 95. 



Chaetoceros peruvianum Brightwell 

 Chaetoceros criophilum Castracane 

 Coscinodiscus oppositus Karsten 

 Actinocyclus corona Karsten 

 Chaetoceros dichaeta Ehrenberg 

 Coscinodiscus oculoides Karsten 



St. 460. 20/21. x. 30. 56 46' S, o° 41I' W. 100-om. 



Temp. - 1-29° C. Salinity 34-08 °/ 00 . pB. 7-95. P 2 5 104 



Fragilariopsis antarctica (Castracane) Hustedt 

 Chaetoceros cruciatum Karsten 

 Rhizosolenia hebetata Bailey 

 Corethron criophilum Castracane 

 Chaetoceros dichaeta Ehrenberg 

 Rhizosolenia Shrubsolii Cleve 

 Chaetoceros criophilum Castracane 



Chaetoceros atlanticum Cleve 

 Melosira sphaerica Karsten 

 Rhizosolenia alata Brightwell 

 Thalassiothrix longissima Cleve et Grunow 

 Coscinodiscus radiatus Ehrenberg 

 Dactyliosolen antarcticus Castracane 

 Coscinodiscus hexagonalis Karsten 



St. 461. 21/22. x. 30. Position 56 44' S, 2° 23! 

 461A-461G, are here included. 



Temp. -i- 7 2°C. Salinity 34-15 °/ 00 . P 2 O s 



Corethron criophilum Castracane 

 Rhizosolenia alata Brightwell 

 Fragilariopsis antarctica (Castracane) Hustedt 

 Chaetoceros criophilum Castracane 

 Thalassiosira antarctica Comber 

 Dactyliosolen antarcticus Castracane 

 Coscinodiscus hexagonalis Karsten 

 Chaetoceros dichaeta Ehrenberg 

 Chaetoceros cruciatum Karsten 

 Rhizosolenia rhombus Karsten 



' W. 1 00-0 m. Seven stations in close proximity, 



104. 

 Actinocyclus intermittens Karsten 

 Asteromphalus Hookerii Ehrenberg 

 Eucampia balaustium Castracane 

 Rhizosolenia crassa Schimper ex Karsten 

 Rhizosolenia styliformis Brightwell 

 Charcotia bifrons (Castracane) Peragallo 

 Schimperiella valdiviae Karsten 

 Biddulphia striata Karsten 

 Rhizosolenia truncata Karsten 



