P. T. CLEVE, THE PLANKTON OF TIIE NORTH SEA, ENGLISH CHANNEL, ETC. 



Ciliata. 



Anipliorolla Steenstrupii Clap. & Lachm. — This species was seen in January ;it 

 35 N. 9°W., in Mardi at 87° N. 26° W. and 44° N. 16° W., in May at 50° N. 33° W*. 



February: centre of the North Sen and S. of Norway r. July-August: between the 

 Shetlands and Norway r; at 5° N. 4° E. r; along the W. coast of Jutland r; Gullmarfjord r. 

 September: 59° N. 5° E. r; Skagerak r. Oktober- November: Skagerak rr. 



Ainpliorclla subulata Ehb. — Neritic species, which occnrs from the Mediterranean 



and the Spanish coast to the White Sea and in the Baltic. 



June: 62° N. 5 E. r. July-August: Plym. r; off Heligoland +; Gullmarfjord r. 

 September and November: Skagerak rr. 



Cyttarocylis Claparedii v. Dad. — August: Plym. r. 



C. denticulata Ehb. Arctic species. 



May: 58° N. 5° E. r. June: 62°— 58° N. 5°— 7°E. + r; Skagerak r +. July-August: 

 rare at some points between Scotland and Skagen; W. Skagerak r; Gullmarfjord c, rr. 

 November: E. of Scotland r; Måseskär v. December: Väderö rr. 



C. serrata Möb. {Ptychocylis Ehrenbergii Cl., Kongl. Sv. Vet.-Akad. Handl., XXXII, 

 n:o 8, pag. 16, fig. 2). — July-August: Plym. c, r; Irish Channel r; near the Orkneys ?•; 

 Helder r; off Heligoland and W. of Schleswig r; Gullmarfjord r. September: Helder r. 



Fungella aretica Cl. (Kongl. Sv. Vet.-Akad. Handl., XXXII, n:o 3, Pl. I, fig. 1). — 

 February: 57° N. 5° E. r; off the Dutch coast r; NW. of Skagen r. April: E. of Firth 

 of Tay and the centre of the North Sea rr. 



Ptychocylis acuta Biiandt. — January, Februa.ry: S. of Norway, Väderö, Måseskiir r. 

 Mardi: Skagerak r. July: Gullmarfjord c. +. 



Tintinnopsis beroidea Stein. — January, February: Plym. r; St Vaast +; Helder + r; 

 W. of Denmark, W. Skagerak and Måseskär r. March: Plym. +; Helder r. April, May: 

 Irish Sea r; Hebrides r; Helder r; Måseskär r. November: W. of Scotland r; Skagerak rr. 



T. campauula Ehb. — January: St Vaast rr; Helder rr. July, August: Plym. re; 

 Helder +; off Heligoland +; Skagerak v; Gullmarfjord + r. September: Plym. +; Helder? 1 ; 

 Skagerak c; Måseskär r. October: Skagerak r +. November: Irish Sea r; Skagerak rr. 



T. Davidoffii v. Dad. — September: Skagerak +. 



T. iistularis MöB. — July, August: Gullmarfjord r. September: Skagerak r. 



T. Lobiancoi v. Dad. — September: Skagerak rr. 



