■-itiO l)lNI)l''f.A(iHIJ,AT/i;— PEKIIIINIUM 



Ovtolwr: 02 N. l'1° W. 

 Xorriiihcr: ol N. 1H and L'8 W. 



Temperature: In.d, mean of 77 obs., max. 28, min. (i.r.. 



Salinity: 35.37, mean of 7:5 obs., max. :-}7.bo, min. 31,s9. 



Planlcton-type. The typical Pcrid. dinciyciix occurs in the 

 Mediterranean, the lied Sea, Indian Ocean and in the whole tropical 

 and temperate Atlantic, but is rather rare in the Sargasso Sea and 

 Florida Current. Its principal area of distribution is between the 

 Azores and Iceland to Scotland, whence it enters the North Sea 

 and the Skagerak and follows the coasts of Norway towards Spitz- 

 bergen, thus from 20^ S. to 78- N. It enters, as a constant, but 

 scarce constituent, the Tripos-plankton of the North Sea. — .S'. [D). 



PERIDINIUM (DIVERGENS VAR.) ELEGANS Cl. 



(K. Vet. Akad. Handl. Vol. XXXIV n. 1 PI. VII lig. 15, Ki.^ 



1898 January: 12' N. 50^ W.; 32" N. 74' W. 

 March: 4° S. 10'" W.; 7" N. 17MV.; IP N. 59" W 



May: area betweeen 23" N. 45° W., 29" N. 39^ W. and 



28'^ N. 47"" W. 

 June: 19" N. 63° W.; 31° N. 50" W.; 29" N. :!()" W 

 July: 21° N. 58° W.; 33" x\. 74" W.; 41"— 42" N. 58"- -48" W. 

 August: Caribbean Sea; 34" N. 73° W.; 40" N. 66^ W to 



44° N. 42" W. 

 September: 9° N. 53° W.; 20" N. 74- W.; 41° N. Ii5" \^^ 

 October: 21° S. 36° W.; 26" N. 76" W.; 34° N. 74" W. 

 November: 8° N. 28" W.; 26" N. 48° W.; 42" N. 64° W. to 



47" N. 41° W.; 36° N. 14° W.; Canaries. 

 December: 18° N. 67" W 



1899 January: 34° N. 12" W. 

 March :.2i° N. 43° \V 

 April: 36° N. 74" W. 

 May: 35" N. 75° W. 



July: 11°— 12" N. 26—27" W. 



Temperature: 23.8, mean of 43 obs., max. 28. s, min. H). 

 Salinity: 35. si, mean of 40 obs., max. 37.28, 'min. 32. st. 

 Plankton-type. Occurs in the Indian Ocean. — D. 



