Abstract
The fine structure of the palmelloid and swimming cells of Chrysocapsella granifera (Mack) Bourrelly is described. Many features, for example the superficial deposit on the longer flagellum, the presence of a reduced haptonema, the pit penetrating the cell close to the appendages and the strongly refringent inclusion bodies, are strikingly similar to those of members of the genus Pavlova Butcher (Haptophyceae). The taxonomic position of C. granifera in relation to this and other genera is discussed. The organism is transferred to the genus Pavlova and a revised description of Pavlova granifera (Mack) comb. nov. given.