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DISCOVERY REPORTS 



St. WS598. 19.V.31. 35° 43' S, 73° 32' W. 

 Temp. 12-12° C. Salinity 34-22 °/ 00 . 



Corethron criophilum Castracane 

 Chaetoceros criophilum Castracane 

 Chaetoceros peruvianum Brightwell 

 Skeletonema costatum (Greville) Cleve 

 Thalassiothrix longissima Cleve et Grunow 



1 00-0 m. 



Thalassiothrix antarctica Karsten 

 Chaetoceros neglectum Karsten 

 Biddulphia longicruris Greville 

 Rhizosolenia alata Brightwell 

 Rhizosolenia hebetata Bailey 



St. WS600. 19. v. 31. 35° 40' S, 73° 55' W. 100-0 m 

 Temp. 13-57° C. Salinity 33-97 °/ 00 . 



Chaetoceros neglectum Karsten 

 Corethron criophilum Castracane 

 Thalassiothrix antarctica Karsten 

 Chaetoceros criophilum Castracane 



Chaetoceros peruvianum Brightwell 

 Rhizosolenia alata Brightwell 

 Skeletonema costatum (Greville) Cleve 



St. WS601. 20. v. 31. 35° 30' 30" S, 74° 18' W. 100-0 m. 

 Temp. 13-65° C. Salinity 33-87 % . 



Thalassiothrix antarctica Karsten 

 Corethron criophilum Castracane 

 Chaetoceros peruvianum Brightwell 

 Rhizosolenia styliformis Brightwell 



Skeletonema costatum (Greville) Cleve 

 Rhizosolenia alata Brightwell 

 Nitzschia seriata Cleve 



St. WS602. 28. v. 31. 32° 04' 45" S, 71° 34' W. 50-0 m. 



Temp. 14-02° C. Salinity 34-24 % Q . pH 8-25. 

 Thalassiothrix antarctica Karsten Nitzschia seriata Cleve 



Corethron criophilum Castracane Skeletonema costatum (Greville) Cleve 



Chaetoceros criophilum Castracane Biddulphia longicruris Greville 



St. WS621. 7. vi. 31. 24° 27' 30" S, 70° 43' W. 

 Temp. 17-20° C. Salinity 34-79 % . 



Corethron criophilum Castracane 

 Bacteriastrum delicatulum Cleve 



1 00-0 m. 



Planktoniella sol (Wallich) Schiitt 

 Rhizosolenia alata Brightwell 



St. WS622. 8. vi. 31. 23° 32' 36" S, 70° 38' 30" W. 100-0 m 

 Temp. 14-10° C. Salinity 34-59 7 00 . 



Corethron criophilum Castracane 

 Planktoniella sol (Wallich) Schiitt 

 Actinoptychus senarius Ehrenberg 

 Rhabdonema adriaticum Kiitzing 

 Navicula lyra (Ehrenberg) Kiitzing 



Biddulphia longicruris Greville 

 Biddulphia antcdiluviana (Ehrenberg) Van Heurck 

 Coscinodiscus Asteromphalus Ehrenberg 

 Trigonium arcticum (Brightwell) Cleve 



St. WS623. 8. vi. 31. 23° 32' 42" S, 70° 41' W. 

 Temp. 14-14° C. Salinity 34-64 % . 



Corethron criophilum Castracane 

 Rhabdonema adriaticum Kiitzing 

 Trigonium arcticum (Brightwell) Cleve 



1 00-0 m. 



Planktoniella sol (Wallich) Schiitt 

 Coscinodiscus Asteromphalus Ehrenberg 



St. WS629. 9. vi. 31. 23° 21' 30" S, 71° 28' W. ioo-om. 

 Temp. 18-04° C. Salinity 34-87 °/ 00 . 



Planktoniella sol (Wallich) Schiitt 

 Rhizosolenia alata Brightwell 



Biddulphia ajitediluviana (Ehrenberg) Van Heurck 

 Chaetoceros Lorenzianum Grunow 



