DIATOMACE^E — CHA^TOCEROS .A ) I 



CHiETOCEROS OSTENFELDII Cl,i 

 (K. Vet. Akad. Haiidl. Vol. XXXIV n. 1 PI. VIII fig. 19). 



18i),s April: 49^—48 N. 19°— 29° W., abundantly; Faroe Channel; 



S. of Iceland ; 59° N. 28° — 22° W., everywhere rare. 

 Mfiji: The area between the Orkneys, S. Iceland and 57° 



N. 34° W., more or less abundant along HO N. from 10 



to 34° W. 

 June: bl ' N. 4H° W. rare. 

 July: ()3 — 61- X. 14°— 23° W., rare. 

 AiKjust: 63' — (iiV X. 25" — 33° W., more or less common. 

 Sepuiiibi'r: Hi- X. 32° W to 62° X. 21° W., more or less 



rare. 



Temperature: h to 13.s. 



Salinity: 35..5() (extremes 33 and 35.5?). 



Plankton-type: s. 



CH.ffi:TOCEROS PERUVIANUS Btw. 



Ci,. Fifteenth annual report of the Fishery Board tor Scotland, for 1896, 



pag. 299 lig. 7). 



1897 l)ci-cnthci- and 



1898 January: 12°— 2()- X, 19°— 18 W.; 36° X. 27° W. to 4i> X. 



17° W.; 12° X. 50° W. to 7° N. 53- W.; 35° N. 71° W. 

 February: 13°— 16- N. 70"^— 71° W. 

 March: 33°— 36° X. ,^2-— 29° W.; 1° S. 28° W.; 3' N. 21° W.; 



10° X. 53 W. 

 April: W X. 29° W.; 15° X. 1-9° W. 

 Jutw: 31° X. 18° W. 

 Auyu>^l: Azores; 11° X. 57° W. 

 Scpteiuber: Azores. 

 Ovtober: 21° S. 3()" W. 



1899 Febrary: 31° X. 1(»° W. 



April: 1l°-r-1-6° X. 15°— 13° W.; 32° X. 75° W. 

 J,au': 3°— 1° S. 20°— 19° W. 



Ostenfeld's data for W. Idciniosits njl'.o used. 



