76 



P. T. CEEVE. THE PLANKTON (>F THE NORTH SEA, EXGLISH CHANNEL, ETC. 



Table IX (con E 



Month 



Day 



13 



24 



13 21 



28 



16 



27 



13 



21 



9 18 . 



Sm. 



Chaetoceros diademe Ehb. 



C. didymus Ehb. . . . 



C. hicmalis Cl 



I Schfittii C% 



C. scolopendra Cl. . . . 



C. socinlis Laiper . . . 



Coscinodiscus concinm 



Ditylnm Brighlwellii West. . . 



Gninardia flaccida Castr. . . . 



Rhizosolenia ralcar a\is SCHULZE 



R. gracillima Cl 



R. semispina Hensen .... 



K. styliformis Btw 



Skeletouema costatum Grev. 



mopyxia turgida Grev. . 

 Thalassiosira Nordenskiöldii Cl. 

 Thalassiothrix Erauenfeldii Grin. 



Planktontype 



Tp. Ne. 



I Tp. 

 INc.T. 



Tp. \ 

 Ne. | 



— 





c 







— 



— 



IT 

 C 



( C 



— 



c 



rrc 



cec 



— 



+ 



— 



+ 

 te 



+ 



— 



+ 



1 



— 



Xc. 



Xc. 



Si. Xc. 



Xc. Si. 



c — 



C( C 



+ 



c 



+ 



(c. Si 



I Ns. 



Xh. 

 Tp. 



Xs. Si. 



: 



Xh. 



Xs. 

 (Tp.) 



Nh. 



Xs. 

 (Tp.) 



Xs. C. Xs. 

 Balt. Balt. 



