UNIVERSITY OF CALIFORNIA PUBLICATIONS 

 ZOOLOGY 



Vol. 3, No. 13, pp. 299-340, PI. 22-33 April 13, 1907 



CONTEIBUTIONS FROM THE LABORATOEY 



OF THE 



MARINE BIOLOGICAL ASSOCIATION OF SAN DIEGO. 



XVII. 



DINOFLAGELLATA OF THE SAN DIEGO 



REGION, III. DESCRIPTIONS OF 



NEW SPECIES. 



BY 



CHARLES ATWOOD KOFOID. 



The investigations of the plankton of the waters off the coast 

 of Southern California, carried on since 1901, principally at the 

 Marine Laboratory at San Diego, have brought to light an ex- 

 ceedingly rich protozoan fauna, in which the Dinoflagellates are 

 abundant and often predominant. In addition to practically all 

 of the species of this order known from warm temperate seas in 

 other parts of the world, there have come to light a number of 

 new forms which are here described. A fuller account of some 

 of them, especially in the genus Ceratium, will appear in a later 

 paper. 



The present paper includes 22 new forms distributed as fol- 

 lows in the system : 



Gymnodinidae. 



A mphidinium sulcatum. 

 Peridinidae. 

 Ceratunae. 



Heterocapsa pacifica. 



Ceratium calif orniense. 



Ceratium gallicum. 



