DIATO.MACE.I', — CH/liTOCEROS 2^95 



CH^TOCEROS CRIOPHILUS Castr. 

 (Cl a Treatise on the Phyto-plankton PI. I fig. 6.) 



1898 Murch: 23^ N. 17^" W.; Mr X. 69° W. 



April: 49° N. 19° W.; 40°— 41° N., 70° and 58^ W. 



Mail: 42= N. 45° W.; 70^—72° X. 14°— 16° W.; 67°— 68° N. 



25—21° W.; ()2° N. 2° W, 

 June: 66 N. 26° W. to ()7- N. 29^ ^\^ and thence to 69- N. 



15° W. (common); 68° N. IH" E.; 73° N. 28° E. 

 Juhj: 62° N. 0° W. 



August: Faroes; 76°— 80° N. 12-— 11° E.; 81= N. 24° E. 

 Sepk'iiibcr: 60= X. ;V W.; Azores; 7o°— 76° X. 17°-^13° E. 

 ()et<)Ijer: Azores. 



Xoreiiibfi-: 45°— 48- X. 52-— 49° W. 

 December: 45° X. 51° W to 41° X. Mr W. 



1899 Ma;/: 65° N. 13° W. to 67= X. 16= W. 



Ju/)r: ()8- X^. 0-' W to ay N. 13° W. (everywhere common), 

 71° X. 10° W. to 73" X. 4° W. (at some spots common). 

 Aufjiisi; 73° X. 22°— 24= W. (rare). 

 Septeiiihcr: 1'2' X. 16= \V. (rare). 



Temperature: 6.-, mean of 46 obs., max. 20.2, min. — l.s. 

 Salinity: 34.2.s, mean of 45 obs., max. 36.25, min. 31.98. 

 Plankton-type. Decidedly arctic, pelagic species. — T. 



CH.ffi:TOCEROS CURVISETUS Gl. 



(Gran D. Norske Nordhav-Expedition 1876—78 Protophyta. PI. Ill flg. 43). 



1898 January: 11° X. 20 W. to 20= X. 18° W. 



March: 21= X. 18= W.; 23 X. 17 W.; 58= X. 6= E.; 7° N. 



55° W.; 33° N. 48= W. 

 June: 42° X. 9= W. 



Aiiiiunt: 58= X. 2-' W.; <iO X. 2°— 3° W. (rarei. 

 September: 59°— 60° X. 2° W.; 66= X. 18= "W. 



Temperature: 14.?. mean of 12 obs., max. 25.9, min. 6. 

 Salinity: 34.9i, mean of 6 obs., max. 35,i7, min. 33,7s. 

 Plankton-type. Neritic form of the temperate Atlantic, occur- 

 ring only occasionally in the ocean. — Nm. 



