FORAMINIFERA OF THE ATLANTIC OCEAN. 



107 



ropean specimens seem to be those recorded by Heron- Allen and 

 Earland from off the west of Scotland.^" I have had very few speci- 

 mens in the western Atlantic Albatross material which could be re- 

 ferred to this species. These are from the Gulf of Mexico, and the 

 eastern coast of the United States. One of the most nearly typical 

 is here figured. 



Cristellaria convergens — material examined. 



CRISTELLARIA SEPTENTRIONALIS, new species. 

 Plate 27, figs. 1, 2. 



Description. — Test comparatively large, close-coiled, much com- 

 pressed, periphery subacute, not keeled; chambers numerous, 15-18 

 in the last-formed coil, not inflated; sutures curved, especially 

 toward the periphery where they are somewhat raised above the 

 general surface; umbo raised, large; wall smooth; aperture at the 

 peripheral angle, radiate. 



Diameter up to 4 mm. 



Distribution. — Type-specimen (U.S.N.M. Cat. No. 18956) from 

 Albatross station D2202, in 515 fathoms (942 meters), off the north- 

 eastern coast of the United States. I have had numerous specimens 

 of this species, all from the general region northeastward from 

 Cape Hatteras. It is distinguished by its large size, prominent 

 umbo, large number of chambers in the last-formed coil, and 

 peculiar curvature of the sutures. 



Cristellaria septentrionalis — material examined. 



«» Trans. Linn. Soc. London, ser. 2, vol. 11, 1916, p. 262, pi. 42, figs. 11-14. 



