Dl.NOFLAGIiLLATJi DINOPHYXIS 24H 



September : 05"— <)S^ N. 55^ — 53'' W., rare. 

 1899 May: 56° N. 1° VV. to 59° N. 2° W. 



Jitiie: Westmannao, common to rare; H2° N. 1° E.; 65" N. 10 



E.; 78° N. V2° E. 

 July: 52° N, 5-1° W, not I'are. 

 September: 72° N. 19'^ E. to 81° N. 16° E„ as a rule rare, 



but common at 78" N. 12° E.; 52" N. 55'' W., not rare. 



TemperatUFe: 5.9, mean of 21 obs., max. 9.8, min. — 0.9. 



Salinity: 34-.3.-), mean of 21 obs., max. 35. n, min. 32.03. 



Plankton-type. I found this species in a sample from Jedo 

 Bay, .Japan. It is difficult to decide to what plankton-type this spe- 

 cies belongs. It occurs at Spitzbergen among drift-ice and together 

 with arctic forms, but on the other hand it has not been seen, as 

 true arctic species, north of Iceland along east Greenland. — Xs ? T. ? 



DINOPYXIS COMPRESSA (Bail.) 

 tliriiricllii. iiuirinii Si'.iiuTT D. Peridineen d. Plankton-exp. PI. I fig. 1.) 



1898 Jannary: ~r N. 53" W 

 March: (? S. i° W 

 July: 31° N. 39" W. 



Si'ptember: Azores; 56" N. 12" W.; 57" N. 11" W.; 60- N. 



4° W. 

 October: Azores; 57" N. 27" W 

 Xnrember: 17" N. 11° W. 



1899 April: 46" N. 13° W. 



June: 15" S. 5" W.; 9 N. 25" W.; 27° N. 25° \V. 



July: 12" N. 27° W.; 33° N. 36° W.; 35°-36° N. 40" W.; 



iO-— il° N. 38°— 37° W.; 48" N. 23°— 25° W. 

 August: 4-8" N. 17"— 20" W. 



Temperature: 20.6, mean of 26 obs., max. 27, min. 9. 

 Salinity: 36.io, mean of 22 obs., max. 37.5o, min. 35, 19. 

 Plankton-type : >>' 



