REVISION OF RECENT BAIRDIIDAE 



Material 



The most fertile source of living material for this study was in the 

 collections of the U.S. Program in Biology, International Indian Ocean 

 Expedition, which include three types of collections: (1) Shore-based 

 collections by the author from littoral and reef environments around 

 Nosy Be, Madagascar; (2) collections, mainly by dredging, of cruises 

 7-9 of the RV Anton Bruun in the Mozambique Channel; (3) collec- 

 tions by various participants at islands visited on these cruises. Be- 

 cause of the great number of specimens and species involved, the 

 shallow-water subfossil assemblages included in these collections 

 have not been systematically covered here. The species selected for 

 inclusion in this report are those for which abundant Uving material 

 is available, aU species of the Nosy Be fauna, and the characteristic 

 bairdian constituents of the relatively monotonous abyssal faunas. 

 Thus this paper represents a "reconnaissance" survey -with emphasis 

 on taxonomic diversity rather than regional comprehensiveness. 



Also included here are the bairdiid components of the assemblages 

 currently (1967) being studied by R. H. Benson for his analysis of the 

 abyssal ostracode biofacies. These include collections of the USNS 

 Eltanin, chiefly in Antarctic waters; collections of cruise 11 of the 

 Anton Bruun in the southeast Pacific; and collections of the U.S. Fish 

 Commission Steamer Albatross in many parts of the world, especially 

 the Gulf of Mexico and southeast Pacific. 



The Bahama collections of L.S. Kornicker permit further description 

 of the five species of "Bairdia" he recognized there as well as two other 

 Caribbean species. Other collections in the U.S. National Museum, 

 chiefly those of Tressler and Benson, have yielded single species whose 

 redescription contributes to the coverage of this project. 



STATION LOCALITIES 



Collections of the RY Anton Bruun cruises 7 and 8 in the Mozambique 

 Channel (see Figm-e 1) : 



