FOBAMINIFERA OF THE ATLANTIC OCEAN. 



109 



From the European side Balkwill and Wright record a single speci- 

 men from off Ireland's Eye, 7-9 fathoms (13-16 meters), Brady 

 " small starved specimens doubtfully referable to this species " from 

 the west of Scotland, and Heron- Allen and Earland ®- from off South 

 Cornwall. I have failed to find good typical material in the Alba- 

 tross collections that I have examined. 



CRISTELLARIA SUBMAMILLIGERA Cushman. 



Plate 28, fig. 3. 



Cristellaria mamiUigera H. B. Beady (not Karrer), Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 553, pi. 70, figs. 17, 18.— Cushman, Bull. 71, 

 U. S. Nat. Mus., pt. 3, 1913, p. 74, pi. 34, fig. 6a (not 6&, which should 

 read 56). 



Cristellaria suhmamilligera Cushman, Proc. U. S. Nat Mus., vol. 51, 1917, 

 p. 657 ; Bull. 100, U. S. Nat. Mus., vol. 4, 1921, p. 235. 



Description. — Test biconvex, close-coiled, periphery with a thin 

 keel; sutures curved, limbate externally, ornamented by a raised 

 ridge which ends near the umbilical region in a protuberant knob, 

 often a distinct raised boss over the center of the umbilical region ; 

 keel entire and not denticulate in well-preserved specimens; wall 

 between the raised ridges, smooth ; aperture radiate. 



Diameter of Atlantic specimen 2 mm. 



Distribution. — This species described from the Philippine region 

 has a fairly broad distribution in the Indo-Pacific region. I had it 

 from many stations in the Philippines and Brady records it from the 

 Philippines and Fiji. Chapman records it from off Great Barrier 

 Island. It is interesting, therefore, to find a single well-developed 

 specimen from the northern part of the Gulf of Mexico where numer- 

 ous other Indo-Pacific species have been found. In the Summary 

 of Results of the Challenger Expedition the species is recorded from 

 off the southeastern coast of South America, off the mouth of the 

 Rio la Plata. This is a peculiar distribution and the specimens 

 should be reexamined. 



Joiirn. Roy. Micr. So.-., 1916, p. 4S. 



