KONGL. SV. VET. AKADEMTENS HANDLINGAR. BAND 36. N:0 8. 53 



Thalassiosira byalina Gkunow. — 1901 Ajjril, Norw. 09° N. 14°— 18°E. c. — Ng. 



Thalassiosira Nordenskiöldi Cleve. — 1901 January, V. oro. February, V. oor. 

 March, V. ror; M. r. April, V. cro. M. rro. Norw. 69° N. 14°— 18° E. c. May, Atl. 

 62° N. 1° E. to 64° N. 5° W. c + c. 



1902 January, M. r. - February, 57° N. 4° E. and N. of Jutland. Along the coast 

 of Sweden sparingly. Stigfjord c, Gullmarfjord +. V. + ro. M. + + c. March, V. + r +. 

 M. ++ o. April, V. roo. May, N. and N.W. of Scotland, the Orkneys, 55°— 57° N. 0° 

 —3° E. and W. of Sylt. — Ng, JSTs. 



Thalassiothrix Frauenfeldi Grunow. — 1901 January, V. o + o; M. + r. February, 

 V. oor\ Norw. 63°— 64° N. 2°— 4° E. er. March, V. r ++; M. r. April, V. + + +. M. 

 + cc. Norw. 69° N. 14°— 18°E. + to c. May, V. + ro. M. cro. Atl. 62° N. 1° E. r. 

 October, V. + + e. M. or +. JSfovember, W. of Denmark r, very common at Skagen. 

 V. c + +. M. c. December, V. rr +. M. + + r. R.Sg. r. 



1902 January, M. +. February, Firth of Forth r, from 58° N. 5° E. to Skagen r, 

 W. of Denmark +. N. of Skagen c. Coast of Sweden c. The fjords c. March, V. (?co. 

 M. cco. April, M. + c. V. + + r. May, M. rro. V. roo. July, Ramsö r. - — Ns. 



Thalassiothrix longissima Cleve. — 1901 February, Norw. 64° N. 1°— 2° E. r. March, 

 NorAv. 72°— 74°N. 19°— 21° E. r. May, Atl. 63° N. 2° W. to 65° N. 11° W. + er; 67°— 

 68° N. 1°— 6°E. + r. 



1902 February, 58° N. 11° E. in 50—30 m. r. May, at 58° N. 3°29' E. and 57° N. 

 6° E. very sparingly. — T. 



Tryckt den 12 mara 1903. 

 K. Sv. Vet. Akttd. HiiDdl. Band 36, N:o 8. 



