EECENT FORAMINIFEEA FROM THE ATLANTIC COAST 



OF SOUTH AMERICA 



By Joseph A. Cushman and Frances L. Parker 



Ciishman Laboratory for Foraminiferal Research, Sharon, Mass. 



This is the third of a series of papers on the recent foraminifera 

 from the collections made by Dr. Waldo L. Schmitt, of the United 

 States National Museum, on his trip about South America under the 

 auspices of the Walter Rathbone Bacon scholarship of the Smith- 

 sonian Institution. Those from Juan Fernandez have already been 

 studied and the results published,^ as well as those from the west 

 coast of South America.^ 



D'Orbigny's memoir on the foraminifera of his voyage around 

 South America, published in 1839, contained figures and descrip- 

 tions of many new species that have not been recorded or referred 

 to since that date. Very little has been added to the knowledge of 

 the foraminiferal fauna of the South American coast, including the 

 Falkland Islands. The Challenge?' occupied a few stations along the 

 eastern coast of South America, but mostly in the offshore waters. 

 The paper by Brady, Parker, and Jones on the foraminifera of the 

 Abrohlos Bank, together with the records given by Pearcey, furnished 

 most of the few additional records from the region. Flint studied 

 a very few of the Alhatross collections made on the trip around South 

 America, and Heron-Allen and Earland are now publishing papers 

 on the fauna of the Falkland Islands collected by the Discovery 

 Expedition. 



The relations of the fauna are interesting. Our stations from off 

 Brazil, especially the harbor of Rio de Janeiro, show that the fauna 

 at that point is essentially a West Indian one, and most of the 

 species are to be found in d'Orbigny's work of 1839 on the West 

 Indies, or in more recent works on the fauna of the same region. The 

 stations to the south along the coast of Argentina and the shallow 

 water of the Falklands give a cold-water fauna, which is not closely 



' Cushman and Wickendon, Proc. U. S. Nat. Mus., vol. 75, art. 9, 1929. 

 2 Cushman and Kellett, Proc. U. S. Nat. Mus., vol. 75, art. 25, 1929. 



No. 2903.— Proceedings U. S. National Museum, Vol. 80. Art. 3 



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