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INTRODUCTION 



This paper is the seventh part of a work the intent of which is to 

 describe and illustrate the Foratninifera of the Atlantic Ocean, 

 especially those species which have occurred in the waters adjacent 

 to the shores of the United States, including the whole of the Gulf 

 of Mexico and the Caribbean Sea, that being the area in which most 

 of the work of the vessels of the United States engaged in dredging 

 work has been done. This part includes the families Nonionidae, 

 Camerinidae, Peneroplidae, and Alveolinellidae. Many of the species 

 of these families live in warm, shallow waters and are not abundant 

 in the deeper waters dredged by the United States Bureau of Fisheries 

 steamer Albatross. Some of the Nonionidae, however, are very 

 abundant in these dredgings. 



Joseph Augustine Cushman. 



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