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BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



bean Sea. It has also occurred at several stations, as shown on the 

 accompanying table. These cover fairly well the region from south 

 of Cape Hatteras on the southeastern coast of the United States to 

 Brazil, including the Gulf of Mexico and Caribbean. In his Chal- 

 lenger collections Brady had the species from off Bermuda, off the 

 Lesser Antilles, off Brazil, and off the Canaries at depths from 350- 

 1,360 fathoms (640-2,487 meters). It is also recorded from off the 

 Abrohlos Bank, Brazil (H. B. Brady, Parker, and Jones) ; off the 

 Irish coast, 100-1,000 fathoms (183-1,829 meters) (Wright; Balk- 

 will and Wright) ; and from off the West Coast of Africa (Egger). 

 The specimens of Balkwill and Wright are evidently not this species, 

 and it may be that those of Wright were not. If so the species would 

 be confined to the more restricted distribution given. 



There are numerous records for the species from the Pacific, es- 

 pecially the South Pacific, and it may be that this species, like a 

 number of others, has a wide range. A specimen which I have from 

 the Gulf of Oman in 200 fathoms (366 meters) seems to be different 

 from typical western Atlantic material, and specimens from the 

 South Pacific and elsewhere should be examined and compared with 

 typical material from the Atlantic. 



While the species has previously been referred to Vaginulina 

 tricarinata D'Orbigny, an examination of D'Orbigny's Modele 

 shows a form that can hardly be considered in connection with our 

 Atlantic species. The arrangement of the chambers, the shape of 

 the test, the angles, and the aperture are all very different. 



There is almost no real variation in the characters of the species 

 in the series of specimens I have had, nor in the specimens figured 

 by Brady, or by Brady, Parker, and Jones, showing that the species 

 is well defined. Its nearest relationships are with Uvigerina. 



Trifarina hradyi — material examined. 



