FORAMINIFERA OF THE ATT^ANTIC OCEAN. 



31 



Description. — Test differing from that of the typical form of the 

 species by the wide peripheral flange; it is also broader and much 

 more tapering. 



Length about 1 mm. 



Distribution. — The only Atlantic record for this variety is that 

 given by Brady in the Challenger Report, off Cezimbera, south of 

 Lisbon, in 50 fathoms (91 meters). In the Albatross material 

 specimens which may be referred to this variety occurred at four 

 stations, one southeast of Nantucket, one off the coast of Carolina, 

 one in the Gulf of Mexico, and one off the southeast coast of Brazil. 

 The record of Goes for B. beyrichi from the Caribbean is probably 



this variety. 



Bolivina heyrichi, var. alata — material examined. 



BOLIVINA ALBATROSSI. new species. 



Plate 6, fig. 4. 



Description. — Test short, small, rather thick, periphery rounded, 

 initial end broadly rounded, early portion marked by a network of 

 fine reticulations, later portion smooth; chambers comparatively 

 few, those of the later portion distinct ; sutures distinct except in the 

 early portion, not depressed, slightly limbate, wall translucent, 

 finely punctate; aperture narrow, slightly elongate. 



Length 0.25-0.30 mm. 



Distribution. — Type-specimen (U.S.N.M. No. 17098) from Albatross 

 station D2677, in 478 fathoms (873 meters), off the Carolina coast. 

 There is also a single specimen from Albatross station D2398 in the 

 Gulf of Mexico. This species is peculiar in its rounded form, closely 

 set chambers, and the reticulations of the early portion. 



In the "Summary of Results" volume of the Challenger Report 

 B. reticulata is recorded from off the West Indies at station 23, 400 

 fathoms (732 meters). This may be the present species. 



Bolivina albatrossi — material examined. 



