•>1H DIATOM ACK.I'; — COSCINODISCUS 



Plankton-type. This s])r!cies belongs almost exclusively to 

 tlip eastern Atlanti(% havinj^ only once been seen north of South 

 America. It was found in the spring west of Africa and in the area 

 lietvveen the Azores and the E. Channel, had in May advanced to 

 the north of Rockall, in June to the Fiiroe (Channel, reached Iceland 

 in July and drifted thence in August towards E. Greenland. In the 

 winter it was seen in the region of the Newfoundland Banks. Lem- 

 MERMAXN mentions this species from the northern Pacific. — .S. 



COSCINODISCUS ANGUSTE-LINEATUS A. Sch.vi. 



Atlas der Dial. Kunde PI. LIX (ig. 'i4.) 



W)<i) Julij: 57" N. 2;5 W., common. 



Temperature : 18. 

 Salinity: 35. n 

 Plankton-type : S. 



COSCINODISCUS BENGALENSIS Gki n. 



(Van Hkirck Synopsis PI. CXXXII lig. !l.) 

 1898 Aittjiist, September, (Jiiahe/'-. Azores. 



Temperature: 19.9, mean of 4 obs., max. 21.2, min. I8.5. 



Salinity: 36.2s, mean of 3 obs., max. 86.2.5, min, 36. is. 



Plankton-type. Noted from Elephant Point, Bengale. 1 have 

 seen this species in plankton from the Red Sea. Probably a neritic 

 term. — A7. 



COSCINODISCUS BIOCULATUS (tRun. 

 (D. Diat. von Franz Josef-Land ISK-i PI. HI f. 30.) 

 1898 .yajj: 72" N. 13-^ W. 



Temperature: ^ O.i. 

 Salinity: 34.2«. 



Plankton-type. Noted from the North Siberian Sea and the 

 iioasts of Greenland — A/y. 



