22 v. T. CLEVK, THE PLANKTON OF THE NOHTH «EA AND THK SKAGERAK. 



Codonellii Jörgensenii Cl. N. Sp. — November: very rare N. of Holland and 

 at Skagen. 



Descr.: House as long as broad, with a short ai)ical spiiie; its 

 wall indistiiictly malleate. Proboscis short, nearly as Ijroad as the 

 house, with soiue few rings. Length and breadth of house 0, 05 mm.; 

 length of the proboscis 0, 01, diameter of the opening 0,044 mm. 



This species reminds one of Codonella orthoceroK Möbius (non 

 Hkl.) in the Fifth Ber. der Commission zu Kiel (1887, fig. 33), for 

 Avhich form Brandt has proposed the name Tintinnopsis baltica, but 

 which seems to me to represent a young specimen of Tintinnua Jiatu- 

 Codonclla Jörgensenii Cl.. ^^''"'* MöB., the latter probably the same as Tintinnus helix Clap. & 



450 t. m. LaCHM. 



c. (Tintiunopsis) veutricosa Clap. & Lachm. — January: Dröbak (30 metres). Fe- 

 br uary: W . of Scotland and of Jutland. April: r. E. of Firth of Tay. Jdly — August: 

 W. of Jutland. October: M and V. rr. November: common W. and N. of Scotland, 

 thence to the W. of Jutland and the Sk.; ;it Dogger Bank; oö' the Dutch coast; Vinga 

 (30 m. +), M. r, V. r. December: M. r, V. r. 



Cyttarocylis deuticulata Ehb. — January: M. r. Febr uary: from E. Scotland to the 

 W. of Jutland. Mardi: M. rr. May: not rare N.E. of Scotland and at M. June: the 

 Shetlands more or less common. July — August: the Shetlands, Skagerak and Måseskär; 

 not common. November: N. of Scotland, the central North Sea, Sk. as a rule rare, Vinga 

 r (30 m. +); M. and V. + r. December: M. rr, V. r. 



Cyttarocylis serrata Möb. — July — August: c E. of the Firth of Tay; r oft' the 

 Dutch coast and in the Skagerak. October: M. rr. November: N. of Jutland r. December: V. r. 



|,,., Dictyocysta elegans Ehb. — November: N. of Scotland r. 



Fuugella arctica Cl. — Febniary: Firth of Forth r. April: at Skagen r. 



Ptycliocylls acuta Brandt. — January: M. c, Vinga /', V. r. February: W. of Sk. 

 rr\ M. r. March: M. rr. April: from the depression of the bottom E. of Dogger Bank 

 to W. Jutland and Skagen; Skagerak not rare. May: M. r. November: rare at 57° N. 

 4°E. December: M. and V. rr. 



Tintiunopsis beroidea Stein. — January: central Skagerak, M. and GuUmaretjord r. 

 February: W. of Jutland. November: common oft' the Dutch coast, more or less rare W. 

 and N. of Jutland. ■ ": i-- '■>'':■' ■'^' .a, v. - 



' i T. caiupanula Ehb. — June: V. r. July — August: Mouth of the Scheldt, Skagerak, 

 M. and V. r. September: M. and V. not common. October: M. r, V. rr. November: N. 

 of Holland, W. and N. of Jutland, sparingly; V. r. 



T. tistularis Möb. {Tintinnus helix Clap. & Lachm.?) — July — August: sparingly 

 in the Skagerak and less rare along the Swedish west coast. September: M. r. October: M. rr. 



