DISCOVERY REPORTS 



St. 673. 24/25. iv. 31. 38 7' S, 30° ioj' W. 100-0 m. 



Temp. 17-39° C. Salinity 35-16 % . pH 8-17. P 2 O s 9. N0 3 60. 

 Planktoniella sol (Wallich) Schiitt Coscinodiscus radialus Ehrenberg 



Coscinodiscus curvatulus Grunow Synedra pelagica Hendey 



St. 675. 26. iv. 31. 34° 08' S, 29° 50 J' W. 100-0 m. 



Temp. 19-02° C. Salinity 35-44 



Planktoniella sol (Wallich) Schiitt 

 Asterolampra marylandica Ehrenberg 

 Rhizosolenia Castracani Peragallo 

 Hemidiscus cuneiformis Wallich 

 Rhizosolenia alata Brightwell 



7 00 . ^H8-i6. P,0 5 10. N0 37 . 



Rhizosolenia Bergonii H. Peragallo 

 Coscinodiscus marginatus Ehrenberg 

 Coscinodiscus curvatulus Grunow 

 Chaetoceros decipiens Cleve 

 Guinardia flaccida (Castracane) Peragallo 



St. 677. 27/28. iv. 31. 31° i6J' S, 29° 56!' W. 100-0 m. 



Temp. 21-43° C. Salinity 35-68 % . pH 8-i8. P 2 5 8. N0 3 6 



Hemiaulus Hauckii Grunow 

 Hemidiscus cuneiformis Wallich 

 Coscinodiscus curvatulus Grunow 

 Coscinodiscus marginatus Ehrenberg 

 Asterolampra marylandica Ehrenberg 



Coscinodiscus Charcotii M. Peragallo 

 Fragilaria striatula Lyngbye 

 Coscinodiscus oculus-Iridis Ehrenberg 

 Asteromphalus heptactis (Brebisson) Ralfs 



St. 679. 29. iv. 31. 26° o6|' S, 30° 06^' W. 100-0 m. 



Temp. 25-24° C. Salinity 36-56 °/ 00 . pU 8-25. P 2 5 o. N0 3 6. 

 Hetniaulus Hauckii Grunow Hemidiscus cuneiformis Wallich 



Rhizosolenia curvata Zacharias 



St. 681. i.v.31. 2i°i3'S,29°55i'W. 

 Temp. 27-20° C. Salinity 37-34 °/ 00 



Hemidiscus cuneiformis Wallich 

 Coscinodiscus radiatus Ehrenberg 

 Rhizosolenia stylifonnis Brightwell 

 Asterolampra marylandica Ehrenberg 

 Melosira sulcata (Ehrenberg) Kiitzing 



1 00-0 m. 



pU 8-30. P 2 5 o. N0 3 2. 



Hemiaulus Hauckii Grunow 

 Chaetoceros coarctation Lauder 

 Chaetoceros atlanticum Cleve 

 Rhizosolenia setigera Brightwell 

 Asteromphalus heptactis (Brebisson) Ralfs 



St. 684. 3.V. 31. 15° 38' S, 29° 51!' W. 100-om. 



Temp. 26-80° C. Salinity 37-24 ' 



Planktoniella sol (Wallich) Schiitt 

 Rhizosolenia Castracani Peragallo 

 Asterolampra marylandica Ehrenberg 

 Rhizosolenia Bergonii H. Peragallo 



/ 00 . /.H8-28. PAo. N0 3 2. 



Hemidiscus cuneiformis Wallich 

 Rhizosolenia Shrubsolii Cleve 

 Asterolampra Grevillii (Wallich) Greville 



St. 687. 5. v. 31. 09° 47' S, 29° 51' W. 100-om. 



Temp. 27-51° C. Salinity 36-55 % . pH 8-28. P s O s o. N0 3 5. 

 Rhizosolenia alata Brightwell Rhizosolenia Bergonii H. Peragallo 



Asterolampra marylandica Ehrenberg 



St. 690. 7/8. v. 31. 3 19' S, 29° 58' W. 100-om. 



Temp. 28-20° C. Salinity 36-00 % . pH 8-28. PA °- 



NO, 



Hemidiscus cuneiformis Wallich 

 Planktoniella sol (Wallich) Schiitt 



Asterolampra marylandica Ehrenberg 

 Chaetoceros convolutum Castracane 



