FORAMINIFKRA OF THE ATLANTIC OCEAN. 

 Globigerina conglobata — material examined — Continued. 



21 



GLOBIGERINA SACCULIFERA H. B. Brady. 



Plate 4, figs. 1-6. 



Glohigerina helicina Carpenter (not G. helicina D'Orbigny), Introd. Foram., 

 1862, pi. 12, fig. 11. 



Globigerina sacculifera H. B. Brady, Geol. Mag., dec. 2, vol. 4, 1877, p. 535; 

 Quart. Journ. Micr. Sci., vol. 19, 1879, p. 73; Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 604, pi. 80, figs. 11-17; pi. 82, fig. 4.— H. B. 

 Brady, Parker, and Jones, Trans. Zool. Soc. London, vol. 12, 1888, 

 p. 225.— Wright, Ann. Mag. Nat. Hist., vol. 6, ser. 5, 1890, p. 124; 

 Proc. Roy. Irish Acad., ser. 3, vol. 1, 1891, p. 488. — Egger, Abh. kon. 

 bay. Akad. Wiss. Miinchen, CI. II, vol. 18, 1893, p. 369, pi. 13, figs. 

 50, 51.— Goes, Kongl. Svensk. Vet. Akad. Handl., vol. 25, no. 9, 1894, 

 p. 86. — Ch.-\.pman, Proc. Zool. Soc. London, pt. 1, 1895, p. 37. — Goiis, 

 Bull. Mus. Comp. Zool., vol. 29, 1896, p. 66.— Silvestri, Mem. Pont. 

 Accad. Nuovi Lincei, vol. 15, 1899, p. 263, pi. 5, fig.. 5. — Flint, Rep. 

 U. S. Nat. Mus., 1897 (1899), p. 322, pi. 70, fig. 1.— Chapman, Journ. 

 Linn. Soc. Zool., vol. 28, 1901, p. 404. — Millett, Journ. Roy. Micr. 

 Soc, 1903, p. 688.— Dakin, Rep. Ceylon Pearl Oyster Fish., vol. 5. 

 1906, p. 237.— Bagg, Proc. U. S. Nat. Mus., vol. 34, 1908, p. 154.— 

 Chapman, Journ. Linn. Soc. Zool., vol. 30, 1910, p. 417.— Cushman, 

 Bull. 71, U. S. Nat. Mus., pt. 4, 1914, p. 11, pi. 2, figs. 4-6; pi. 5; pi. 

 10, fig. 4. — Pearcey, Trans. Roy. Soc. Edinb., vol. 49, 1914, pp. 1025, 

 1040.— Mestayer, Trans. New Zealand Inst., vol. 48, 1916, p. 129. — 

 Sidebottom, Journ. Roy. Micr. Soc, 1918, p. 149. — Cushman, Bull. 

 676, U. S. Geol. Survey, 1918, p. 57, pi. 13, fig. 2; Bull. 103, U. S. Nat. 

 Mus., p. 66; Publ. 291, Carnegie Inst. Washington, 1919, p. 39; Proc. 

 U. S. Nat. Mus., vol. 56, 1919, p. 39; Bull. 100, U. S. Nat. Mus., vol. 

 4, 1921, p. 291. 



Description. — Test composed of numerous chambers, the early 

 ones similar to Glohigerina bulloides, but very soon developing acces- 

 sory openings, especially on the dorsal side of the test where the new 

 chamber meets the previous one; early chambers nearly spherical, 

 the later ones becoming somwhat elongate and compressed, the final 

 chamber in fully developed or senescent specimens often much 



