Ceratium Furca and Pedalion Mirum

Abstract

IN describing the specific characteristics of Ceratium furca, one of the Peridiniæ or Dinoflagellates, Saville Kent in his “Manual of the Infusoria” gives the habitat as salt-water, and he appends a note to the effect that, “although usually regarded as entirely marine, M. Werneck has reported the occurrence of an apparently identical species in fresh-water in the vicinity of Salzburg.”