1)1 ATOM ACk.K — CdSCIXOljISCliS 



• COSCINODISCUS (PLANKTONIELLA) SOL. Wallich. 



(A. Schm. Atl. PI. LVIII lig. 4n;. 



ISOS January: d S. l'<I W.; Ki N. IK^ W.; ;{;V N. HT W. lo 



l(r X. 11° W.; 7 —11° X. W^ —h2 VV.; ;)r) X. 71" W. 

 Mdfch: 1° S. lo — 2(r \V.; area hehvecn the Azores, the E. 



Channel and V.) X. ;'.H W.; Hl'' X. 71 \V. 

 April: area between the Azores, the Engl. Channel and 17- 



X. K) W.; 81" N. 7rr W. 

 May: area between Cape l-'inisterro, 11^ X. Iti W, iH" X". 



'lir W. and od N. I!" W. (most common north of Ifr X".); 



11° X. 59° \V. 

 June: 1(r— .')()- N. 12^ W., rare. 

 (Jcti)lii-r: hi-' X. IS- VV., rare. 

 Xnrriiilx'r: S. 81° W.; area between IS X. 20—11° \V. 



and 0.")-— ri(r X. 21-— 2:^ W. 

 18!)U Jatinary: HH- X. If)- W.; IS — oO X. and Hit —20" \V., rare. 

 Marr/r. Ur X. 11° W. 



Aj)ril: area between 1-1 —11 N. If) W. and 12 X. is W. 

 May: ;52- S. IH E. 

 Jlllic: 20- H. 1° I-:, to If) S. ;")- E. 

 (Jrtnhrr: M' X. 11° W.; .")(r N. 2H- W.. rare. 

 Xaretiihcr: ol" N. \':V VV., rare. 



Temperature: 1o..^,, mean of 72 obs., max. 27, min. U. 



Salinity: Ho.xo, mean of oH obs, max. HlJ.m, min. HLis; exrep- 

 tionally 20.«i. and 22. 51. 



Plankton-type. Noted from the Indian, Pacific, Mediterranean 

 and Red Sea. It occurs in the Atlantic along the west coast of 

 Africa, in March and April between the Azores and the E. Channel; 

 advances in May beyond If)-' X. From May rare or absent in that 

 region. In September rare specimens had drifted toward.'^ Rockall. 

 In November it reappeared between IS" X^. and oti" X. It has been 

 rari'ly seen in the western Atlantic, in the Florida current. — S. 



