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Protoperidinium subcurvipes 

Dinoflagellate usually found in higher salinities in the lower Chesapeake Bay. Drought conditions during late 2001 brought this species farther up the Bay to shallower warm waters. Cell has distinctive curve to spines and a pinkish color to the cell contents when viewed live. This sample was collected in November 2002 from the Patuxent River near the mouth. It averages 47u long and 38-45u wide, with a total volume of 3.7x104. (See Dodge in Taxonomic References.)