ÖFVERSIGT AF K. VETENSK.-AKAD. FÖRHANDLINGAR 1 900, N:0 J). 1033 



C. (didymus var.) lonsricruris Cl. — 27 N. 34' E. — As- 



■cension, temperate Atlantic. 



C. Loreuzianiis Grun. — 16—28' N. 41'— 34' E. (ternj). 

 19,65 to 25,5; sal. 38,8 to 40,82). — Arabian Sea, Indian 

 Ocean, Malay Archipelago, tropical Atlantic. 



C. peruvianus Brightw. — 16° — 27° N. 41° — 34" E. (temp. 

 25,5; ml. 38,8). — Arabian Sea, Indian Ocean, warmer At- 

 lantic. 



C. Schiittii Cl. — 27' N. 34° E. — Temperate Atlantic. 



Cliraacodium biconcavum Cl. — 27' N. 34' E. — Indian 

 Ocean, tropical Atlantic. 



C. Frauenfeldii Grun. — 13°— 27' N. 43'— 34' E. {temp. 

 23,65 to 25,5; sal. 36,20 to 39,5). — Arabian Sea, Indian 

 Ocean, tropical Atlantic. 



Coscinodiscus anguste-lineatiis A. Schm. — 27° N. 34' E. 

 — Arabian Sea, Atlantic. 



C. sol Wallich. — 13'— 27' N. 43°— 34° E. — Arabian 

 Sea, Indian Ocean, temperate Atlantic. 



Daetyliosolen liyalinus Cl. — 16' N. 41' E. {temp. 24,5; 

 sal. 37,41). — Malay Archipelago, temperate Atlantic. 



D, mediterraneus H. P. — 27° N. 34' E. — South and 

 temperate N. Atlantic. 



Eucampia cornuta (Cl.). — 27° N. 34' E. — Malay Ar- 

 chipelago and at the Azores. 



Hemiaiilus Heibergii Cl. — 27' N. 34° E. — Indian Ocean, 

 Malay Archipelago and tropical Atlantic. 



Leptocylindrus danicus Cl. — 27° N. 34' E. — This spe- 

 cies is of so frequent occurrence in the northern Atlantic, be- 

 sides oif Spitzbergen, that I have classified it as a boreal spe- 

 cies. This may be doubtful, as it has been found off Cormla 

 and in the Mediterranean (Schröder). 



Navicula membraiiacea Cl. — 19' — 27 N. 39° — 34° E. 

 {temp. 25,5; sal. 38,8). — Northern Atlantic (Plymonth, Scot- 

 land, Skagerak). 



