FOEAMINIFERA OF THE ATLANTIC OCEAN. 



119 



in transverse section, periphery rounded, about 12 visible chambers, 

 increasing rapidly in size as added, early ones more compressed, 

 later ones more inflated ; sutures distinct, oblique, slightly depressed ; 

 wall smooth, thin; aperture terminal, at the periphery, radiate. 



Length up to 2 mm. 



Distribution. — Brady's Atlantic specimens were from off Ber- 

 muda, 435 fathoms (79G meters), and from off Culebra Island, 390 

 fathoms (713 meters). He also records it from off Kaine Island, 

 Torres Strait, 155 fathoms (283 meters). Flint had specimens from 

 the northern part of the Gulf of Mexico, in 169 and 210 fathoms 

 (309 and 384 meters). I have had specimens from the same region 

 and also from the Caribbean. It seems very doubtful if this recent 

 species which according to the records seems to be limited to the 

 tropical western Atlantic and tropical Indo-Pacific is really the 

 same as that described by Reuss from the upper Cretaceous of 

 Northern Germany. I have had very few Atlantic specimens, 

 however, and for the present have preferred to use the name which 

 Brady used for this species. There are numerous records from the 

 region of Australia and New Zealand and it is probably widely 

 spread in the Indo-Pacific. Similar specimens have occured in the 

 Philippine region, but usually not in considerable numbers. 



Cristellaria scJioentachi? — material examined. 



CRISTELLARIA OBTUSATA Reuss, var. SUBALATA H. B. Brady. 



Plate 30, fig. 5 ; pi. 31, figs. 2, 3. 



Cristellaria ohtusata Reuss, var. suhalata H. B. Bkady, Rep. Voy. Chal- 

 lenger, Zoology, vol. 9, 18S4, p. 536, pi. 66, figs. 24, 25.— Flint, Rep. 

 U. S. Nat. Mus., 1897 (1899), p. 315, pi. 61, fig. 3. 



Description. — Test much elongate, the first few chambers close- 

 coiled, the later ones becoming uncoiled, basal portion of the test with 

 a transparent somewhat triangular projecting keel, which overlaps 

 the sides of the coiled portion of the test ; chambers distinct, those of 

 the later portion slightly inflated ; sutures distinct, somewhat limbate, 

 of clear shell material, nearly transparent ; wall smooth ; aperture in 

 the later portion terminal, radiate. 



Length up to 6 mm. 

 5614^^23 9 



