Bull. U. S. B. F., L924. i Doc. 968.) 



Fig. L12. — Phytoplankton dominated by Ceraiium longipes, with only an occasional <". //v/mw The photograph 

 also shows copepod nauplii. Surface haul ofl Cape Elizabeth, August 14, 1914 (station L0251). X 50 



&& k^ a 



'a* 





T 



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Fir.. 113 Monotonous Ceratium tripoa plankton, with occasional C. fusus, Peridiniu n, and copepod nauplii, 

 Surface haul off Capo Cod, Octobei 28, 1915 (station I033B). ■' aboul K 



