Bull. U. S. B. F., 1924. (Doc. 968.) 
Fig. 114.— Phytoplankton dominated by Centrum tripos with fewer C. fusus. Surface haul in Massachusetts 
Bay, October 26, 1915 (station 10337). X 50 
^ lc: ' F, 5 ' Pendinian plank on dominated by Peiidinium, with Ceralium longipes and C. arclica 
Surface haul, eastern side of basin of the Gulf of Maine, May 6, 1915 (station 10270). X 40 
