FOBAMINIFERA OF THE ATLANTIC OCEAN. 113 



CRISTELLARIA PEREGRINA Schwager. 



Plate 30, figs. 3, 4. 



Cristellaria peregrina Schwagee, Novara-'Exped., Geol. Theil., vol. 2, 1866, 

 p. 245, pi. 7, fig. 89. 



Cristellaria variabilis H. B. Brady (not Keuss), Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 541, pi. 08, figs. 11-16; Journ. Roy. Micr. Soc, 

 1887, p. 912. — H. B. Beady, Parker, and Jones, Trans. Zool. Soc. 

 London, vol. 12, 1S8S, p. 224, pi. 44, fig. 12.— Weight, Ann. Mag. Nat. 

 Hist, vol. 4, ser. 6. 18S9, p. 449; Proc. Roy. Irish Acad., ser. 3, vol. 1, 

 1891, p. 485.— Woodward, The Observer, vol 4, 1893, p. 144.— Eggek, 

 Abh. kon. bay. Akad. Wiss. Munchen, CI. II,* vol. 18, 1893, p. 353, pi. 11, 

 figs. 61, 62; pi. 12, figs. 16-18.— Goiis, Bull. Mus. Comp. Zool., vol. 29, 

 1896, p. 58.— Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 316, pi. 63, 

 fig. 1.— Chapman, Journ. Linn. Soc. Zool., vol. 28, 1902, p. 403.— 

 MiLLETT, Journ. Roy. Micr. Soc, 1903, p. 256, pi. 5, fig. 1. — Sidebottom, 

 Mem. Proc. Manchester Lit. Philos. Soc, vol. 51, No. 9, 1907, p. 8, 

 pi. 2. fig. 3.— Chapman, Subantarctic Ids. N. Zealand, 1909, p. 343; 

 Journ. Linn. Soc Zool., vol. 30, 1910, p. 413. — Sidebottom, Mem. Proc. 

 Manchester Lit. Philos. Soc, vol. 54, No. 16, 1910, p. 21. — Heron-Axlen 

 and Eaeland, Trans. Linn. Soc. London, ser. 2, vol. 2, 1916, p. 263. — 

 Mestayer, Trans. N. Zealand Inst., vol. 48, 1916, p. 129. — Sidebottom, 

 Journ. Roy. Micr. Soc, 1918, p. 141, pi. 5, fig. 8.— Cushman, Proc. U. S. 

 Nat. Mus., vol. 56, 1919, p. 615. 



Description. — Test small, compressed, in the adult longer than 

 broad, with a thin peripheral keel, in the young stages the test is 

 close-coiled, usually with a peripheral keel; chambers usually three 

 in the coil, overlapping, the apertural end slightly produced; aper- 

 ture radiate but not projecting, in later development the last-formed 

 chambers become somewhat more inflated and the sutures depressed, 

 a thin peripheral keel is developed, running from the aperture 

 around the test, the aperture itself terminal, produced, surrounded 

 by a ring of spinose projections; wall thin, transparent, smooth. 



Length usually less than 0.50 mm. 



Distribution. — There are numerous Atlantic records for this 

 species, as follows : From Challenger material Brady records it from 

 off the coast of Brazil, off the eastern coast of the United States, off 

 the West Indies, off the Azores, and off the Canaries. Wright 

 records it from 100-1,000 fathoms (183-1,829 meters), off the south- 

 west of Ireland ; Brady, Parker, and Jones, from the Abrohlos Bank, 

 40 and 260 fathoms (73 and 476 meters) ; Goes records it from the 

 northern part of the Gulf of Mexico, the Caribbean, and the North 

 Sea; Egger from off the western coast of Africa. Flint had it from 

 several Albatross stations in the Caribbean off Panama, three sta- 

 tions in the northern part of the Gulf of Mexico, and two off the 

 eastern coast of the United States. Heron-Allen and Earland 

 record a single small typical specimen from the west of Scotland. 

 In the Albatross material that I have examined it has occurred at 



