KONGL. SV. VET. AKADEMIENS HANDLINGAR. FSAND 36. N:() 6. 45 



Chictooeros debilis Cleve. — 1901 January, V. roo. M. ro. Februari/, V. oo +. 

 il/rtrtVt, V. r + c. M. c. April, V. voo. M. ccr. Norw. 69° N. 14°— 18° É. c. May, 

 M. ?-oo. Atl. 68° N. 6°— 13° E. + e, 64° N. 5° W. to 62° N. 1° E. + c +. Octoher, V. c + c. 

 M. o + c. November, N. of Skagen, very common. V. cco. M. c. December, V. + ;■;■. 

 M. + r +. 



1902 January, M. r. February, sparingly W. and N. of JutUmd. Skagerak at 58° 

 25' N. 9°50' E. rare between 60 and 40 m., not rave along the coast and in the fjords. 

 Mardi, V. ccc. M. ccc. April, M. co. V. o + r. Ma]/, Orkneys r; area 55° — 56° N. 

 rW.— 2°E. as a rule sparingly; area 54°— 55° N. 5°— 8° E. very common. M. rro. V. 

 rur. — iVs. 



Chaetoceros decipiens Cleve. — 1901 January, V. + + r. M. + r. February, V. 

 om; Norw. 63°— 64° N. 0°— 5° E. r; 68° N. 13°— 14° E. r. Marek, V. cc +; M. +; Norw. 

 72° N. 23° E. r. April, V. ccc. M. ccc. Norw. 69° N. 14°— 18° E. c to r. May, Y. ccr. 

 M. ccc. Atl. area between 62° N. 1° E., 64° N. 5° W. and 67°— 68° N. 1°— 13° E. more 

 or less abundant. June, M. or. August, sparingly off Firth of Forth. Central Skagerak, 

 rare in 40 m. September, V. r. October, V. + + +. M. rrr. iVowe?)(6c'r, sparingly in the 

 area between 57° — 58° N. 0°E., 55° N. 0° E. and Skagen, not rare S. and S.E. of the 

 Dogger bank. V. rr +. December, V. + rr. M. rro. R.Sg. r. Nh. r. 



1902 January, V. r. M. r. February, from the Orkneys and Firth of Forth to S. 

 Norway and W. Jutland, as a rule sparingly. Skagerak, along the Swedish coast and in 

 the fjords c to +. V. ccc. M. c + +. March, V. ccc. M. c + c. April, M. + cc. V. 

 cc +. May, sparingly round Scotland and in the area between the Orkneys, 56° N. 2° 

 E. and Skagen. W. of Schleswig. M. c + r. V. + + +. June, M. +. V. + oo. — T. 

 ( Chcetop lankton.) 



Chaetoceros densus Cleve. — 1901 January, V. + oo. August, sparingly from the 

 raouth of the Elbe to Holland and S. Jutland. Vinga, 40 — 50 m., r. October, V. rrr. 

 M. 01^0. November, sparingly between Holland and Skagen. V. rrr. December, V. rro. 

 R.Sg. r. Nh. r. 



1902 February, N. of Jutland r. Off Väderöboda 70 — 25 ra. ■;■. Central Gull- 

 marfjord 50 — 10 m. r. May, W. of Jutland r to c. M. roo. V. orr. June, V. + or. 

 — Nm. 



Cliaetoceros diadema Ehrenberg. — 1901 January, V. oro. M. ro. February, V. 

 ooc; Norw. 62° N. 5" E. r. March, V. ccc\ M. c; Norw'. 73° N. 19° E. r. April, V. rro. 

 M. cc +. Norw. 69° N. 14°— 18° E. c to +. May, M. roo. October, V. ++ r. M. roo. 

 November, N. of Skagen +. V. oro. December, V. or +. ]\1. ror. 



1901 January, M. r. February, 56° N. 1° W., 58° N. 0° E., S. of Norway, W. and 

 N. of Jutland r. Vinga 85 — 50 ra. c, O m. r, not rare along the coast of Sweden and in 

 the fjords. M. ccc. V. c + o. March, V. ccc. M. ccc. April, M. cc. V. ccr. May, 

 r N.W. of Scotland and W. of Sylt. M. roo. V. roo. — Ns. 



