KONGL. SV. VET. AKADEMIEN^S HANDLINGAR. BAND 36. N:0 8. 39 



Diplopsalis lenticula Bkkgh. — 1901 January, M. or. Fehruary, V. roo; Norw. 64° 

 N. 0°— 1°E. r; 68° N. 13°— 14°E. +; 70° N. 10° E. r. Match, Norw. 71°— 74° N. 19°— 

 22° E. r. June, M. or. Aiu/ust, sparingly W. and E. of Scotland, common off the rnouth 

 of the Scheldt and thence not rare to Skagen. M. r. Octoher, V. r + r. November, r 

 E. of Newcastle and in the centriil North Sea, not rare W. of Denmark. V. oro. De- 

 cember, V. + 00. M. oro. R.Sg. r. Nh. r. 



1902 January, J\I. r. Fehruary, sparingly in the area between the Orkneys and 

 Firth of Forth, S. Norway and W. Jutland; also oft' the niouth of the Scheldt. Gullmar- 

 fjord r. Mny, sparingly at 56°— 57°N. 2°— 9°E. July, M. + o +. V. roo. — S. 



Gonyanlax spinifera Claparede and Lachman. — 1901 January, V. rrr. Fehruary, 

 roo. April, V. oro. May, V. rro. M. roo. Atl. 62° N. 1° E. +. Auymt, rare E. of the 

 Orkneys and E. a.nd N.E. of Dogger bank. Skagen, central and north Skagerak r. Sep- 

 tember, M. rro. October, V. oro. November, scattered and sparingly in the northern 

 North Sea and W. of Denmark. V. ror. M. r. December, V. rro. M. rro. R.Sg. r. 



1902 January, M. r. February, sparingly in the area from the Orkneys and Firth 

 of Forth to S. Norway and W. Jutland. Gullmarfjord r. May, sparingly N.W. of Scot- 

 land and in the area between 56° N. 1° E., 58° N. 6°E., Skagen and 57° N. 8° E. July, 

 M. roo. — T, Tp, Ns. 



GfOiiyaiilax triacantlia Jörgensen (Ceratium? hyperboreum. Cl. K. Sv. Vet. Ak. Handl. 

 XXXIV n. 1 p. 15 P. VIII f. 14). 



1902 May, very sparingly at 58° N. 10° E. — Ny. 



Peridlnimu couicum *) Gran. — 1901 March, Norw. 71°— 73° N. 21°— 24° E. r. 



Peridinium depressmu Bailey. — 1901 January, V. rrr. M. ro. Fehruary, V. 7'oo; 

 Norw. 63°— 64°N. 0°— 5° E. r; 68° N. 13°— 14° E. +; 69° N. 16°— 17°E. r; 70° N. 10° E. 

 +. **) March, Norw. 71°— 74° N. 19°— 24°E. c to r. Ajml, V. + er. M. o + r. Norw. 

 69° N. 14°— 18°E. +. May, V. c + r. M. + rr. Atl. area 64° N. 5° VV., 61° N. 5° E. 

 and 68° N. 13° E., common in the east, rare in the west. August, rare W. of Scotland, 

 not rare east of Scotland and thence more or less sparingly to the west of Denmark, 

 rare along the Swedish coast in 30 — 40 m. September, M. oor. October, V. oro. M. 

 ro +. November, spai-ingly in the area between 58° N. 3° E., 55° N. 0° E. and Skagen, 

 common in Firth of Forth and at the coast of Holland. V. rr +. December, V. r + r. 

 M. orr. R.Sg. r. Nh. +. 



1902 January, V. r. M. r. February, not rare at 58° N. 0° — 8° E., sparingly south 

 thereof to 55° N. 0° — 8° E. Skagerak everywhere, r to c. April, M. or. V. rr +. May, 

 round Scotland to Newcastle, thence to Limfjord, Skagen and S.W. Norway, as a rule 

 common. M. + rr. V. r + r. June, V. + + ö. July, M. + + +. V. + r +. — T, 

 Tp, Ns. 



*) I have not noted this form, which I supposed to be not fully developed P. depressum or P. divergens. 

 **) Thus as Ceratium arcticum less sparingl}' in the west. 



