RECENT FORAMIXIFERA. A DESCRIPTIVE CATALOGUE OF 

 SPECIMENS DREDGED RY THE U. S. FISH COM- 

 MISSION STEAMER ALBATROSS. 



By James M. Flint, M.D., U. S. N., 

 Honorary Curator, Division of Medicine, U. S. Xational AfuseKm. 



PREFACE. 



The purpose of this catalogue is to record tlie results of an examina- 

 tiou of a portion of the bottom material obtained duriug the dredgiug 

 operations of the U. S. Fish Commission steamer Albatross, and at the 

 same time to furnish a convenient book of reference for those who are, 

 or may become, sufficiently interested to continue the study of this 

 material. 



The examination, while very far from exhaustive, has been pursued 

 with greater or less diligence, as time and opportunity offered, for sev- 

 eral years. Material from about one hundred and tweuty-tive stations 

 has been carefully studied, and specimens from more than a hundred 

 localities have been preserved and identified. Of these localities, 

 fifty-eight are in the Korth Atlantic Ocean, twenty one in the Gulf of 

 Mexico, seven in the Caribbean Sea, one in the South Pacific, and 

 five in the North Pacific. The depths at these stations vary from 7 to 

 l.',51- fathoms. 



The figures in illustration are from photograj^hs of mounted speci- 

 mens on exhibition in the U. S. National Museum, Division of Marine 

 Invertebrates. A uniform enlargement of about 15 diameters has 

 been maintained in the figures, sometimes at a sacrifice of detail in 

 the smaller specimens which would have been made clearer by the use 

 of a higher magnifying power, but for the j)urpose of identification it 

 is believed to be more useful to mark distinctly the relative size of the 

 objects. The exhibition series has been mounted expressly for public 

 dis])lay. The individuals of each species are attached in various atti- 

 tudes to the bottom of the shallow cavity of a concave, blackened disk 

 ot brass. For security each disk is provided with a removable fenes- 

 trated brass cap having a top of thin glass. These disks are arranged 

 in concentric rows upon a large circular metal plate which occupies 

 the place of the stage of an ordinary microscope. The circular plate 

 IS given both a rotary and a toand-fro movement by means of a fric- 



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