FORAMINIFERA OF THE ATLANTIC OCEAN. 



Ammnrkilnslouia pnucihcuhUa ~ material examined. 



87 



Looallty. 



39 27 10 N, 

 39 40 05 N, 

 2:5 10 31 N. 

 39 38 no N. 

 39 30 30 N. 

 39 35 00 N. 

 39 or, 30 N. 

 39 44 ;-0 N, 



39 15 00 N. 



40 34 18 N. 



41 28 30 N. 

 13 29 00 N. 



12 04 00 N. 



69 50 

 09 21 

 82 20 

 71 39 

 71 44 

 71 18 



70 44 

 70 30 

 68 08 

 66 09 

 65 35 

 62 42 



20 W. 

 25 W. 

 37 W. 

 45 W. 

 30 W. 

 45 W. 

 30 W., 

 45 W. 

 (10 W., 

 00 W., 

 30 W., 

 40 W., 



Character of 

 bottom. 



glob, oz 



glob, oz 



CO 



irn. m 



hr. m 



gy. oz 



gv. oz 



br. m 



gy. oz 



gy.m.s 



gy. oz. for... 

 for. m. bk. 



sp. 

 choc. oz. for. 



Abundance. 



Few. 

 Few. 

 Rare. 

 Rare. 

 Rare. 

 Few. 

 Few. 

 Few. 

 Rare. 

 Rare. 

 Few. 

 Rare. 



Rare. 



Genus AMMOSPHAEROIDINA Cushman, 1910. 



Ilaplophragmium (part) H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884, p. 313.— HowcHiN, Trafls. Roy. Soc. South Australia, vol. 12, 1889, 

 p. 6. — Chapman, The Foraminifora, 1902, p. ir,8: Journ. linn. Soc, Zcol., 

 vol. 30, 1907, p. 24. 



Ammosphaeroidina Cushman, Bull. 71, U. S. Nat Mus., pt. 1, 1910, p. 128. — 

 (Type, Ilaplophragmium sphaeroidiniforviis H. B. Brady"). 



Descripticn.- — Test globose, arenaceous, early portion spiral, later 

 chambers like Sphaeroidina in form, embracing; aperture rounded, at 

 one side of the chamber in the adult. 



This genus in its general external characters much resembles 

 Sphaeroidina, but has a rather coarse arenaceous test. 



AMMOSPHAEROIDINA SPHAEROIDINIFORMIS (H. B. Brady). 



Plate 17, fig. 5. 



Ilnplophragmiuvi sphaeroidiniformis 'K. B. Bkady, Rep. Voy. Challevger, Zoology, 

 1884, p. 313.— HowcHiN, Trans. Roy. 8oc. South Australia, vol. 12, 1889, 

 vol. 9. p. 6.— Chapman, Journ. Linn. Soc, Zool., vol. 30, 1907, p. 2^, pi. 3, 

 figs. 50, 51; vol. 30, 1910, p. 401. 



Ammoxphaeroidina sphaeroidiniformis Cushman, Bull. 71, U. S. Nat. Mus., pt. 1, 

 1910, p. 128, fig. 202.— Cushman, Proc. U. S. Nat. Mus., vol. 56, 1919, p. 600. 



Description. — Test free, subglobose, early portion spiral, later 

 portion in adult specimens typically made up of three large globose 

 chambers similar in form and arrangement to Spliaeroidina huUoides, 

 one large one at one side and two smaller ones at the other, the 

 aperture at the inner side of the last-formed chamber, semicircular 

 or rounded; wall rather coarsely arenaceous; color brownish or gray. 



Diameter, 0.75-1.75 mm. 



Distribution. — The Albatross stations here given are along the 

 eastern coast of the United States, in the Gulf of Meltico, and in the 

 Caribbean. 



