Bull. U. S. B. F., 1924. (Doc. 968.) 



Fia 119 — Phytoplankton of early spring dominated by neritic species of the diatom genus ChBetoceras. Sur- 

 face haul near Cape Elizabeth, March 4, 1920 (station 20059). X 150. (Sec list, p. 425.) 





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Fig 120 -Diatom plankton near Lurcher Shoal, April 12, 1920 (station 20101), surface haul, dominated by 

 oceanic species of Chsel ras. X 150. (Seelist,p. 128.) 



