FORAMINIFERA OF THE ATLANTIC OCEAN. 123 



and Jones, Trans. Zool. Soc. London, vol. 12, 1888, p. 221, pi. 43, fig. 11.— 

 Wright, Ann. Mag. Nat. Hist., ser. 6, vol. 4, 1889, p. 448; Proc. Roy. Irish 

 Acad., eer. 3, vol. 1, 1891, p. 475. — Pearcey, Trans. Nat. Hist. Soc. Glasgow, 

 vol. 2, 1891, p. 177. — Robertson, Trans. Nat. Hist. Soc. Glasgow, vol. 

 3, pt. 3, 1892, p. 240.— Eqqer, Abh. kon. bay. Akad. Wiss. Munchen, CI. II, 

 vol. 18, 1893, p. 302, pi. 7, figs. 47, 48, 54-56.— Goes, Kongl. Svensk. Vet. 

 Akad. Handl., vol. 25, No. 9, 1894, p. 43, pi. 8, figs. 320-418.— Schlumberoer, 

 Mem. Soc. Zool., 1894, p. 239.— Chapman, Proc. Zool. Soc, 1895, p. 26.— Sil- 

 VE.STRI, Mem. Pont. Accad. Nuovi Lincei, vol. 12, 1896, p. 103, pi. 2, fig. 10. — 

 MiLLETT, Jonrn. Roy. Micr. Soc., 1901, p. 1. — Whiteaves, Geol. Survey 

 Canada, 1901, p. 10. — Chapman, Trans. New Zealand Inst., vol. 38, 1905, p. 

 90.— KiAER, In Due d'Orleans, Croisiere Oc6an, Mer. du Gronland, 1905 

 (1907), p. 560. — SiDEBOTTOM, Mem. Proc. Manchester Lit. Philos. Soc, vol. 

 49, No. 5, 1905, p. 16.— Rhumbler, Zool. Jahrb., Abth. Syst., vol. 24, 1906, 

 p. 62. — Chapman, Rep. Foram. Subantarctic Ids., New Zealand, 1909, p. 

 332, pi. 15, fig. 1.— SiDEBOTTOM, Mem. Proc Manchester Lit. Philos. Soc, 

 vol. 54, pt. 3, 1910, p. 14.— Chapman, Journ. Linn. Soc, vol. 30, 1910, 

 p. 405. — AwERiNZEW, Mem. Acad. Imp. Sci., St. Petersburg, ser. 8, vol. 

 29, No. 3, 1911, p. 18.— CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 2, 1911, p. 

 96, fig. 150«, b (in text).— Baog, U. S. Geol. Sur\ey, Bull. 513, 1912, p. 43, 

 pi. 12, figs. 3a, b, 5a-c. — Hero.n-Allen and Earland, Proc. Roy. Irish Acad, 

 vol. 31, pt. 64, 1913, p. 69.— Pearcey, Trans. Roy. Soc. Edinburgh, vol. 49, 

 1914, p. 1015. — Heron-Allen and Earland, Journ. Roy. Micr. Soc, 1916, 

 p. 44; Trans. Linn. Soc. London, ser. 2, vol. 11, 1916, p. 240. — Mestayer, 

 Trans. New Zealand Inst., vol. 48, 1916, p. 129. — Sidebottom, Journ. Roy. 

 Micr. Soc, 1918, p. 128.— Cushman, U. S. Geol. Survey, Bull. 676, 1918, p. 

 9, pi. 1, fig. 5; Bull. U. S. Nat. Mus., vol. 4, 1921, p. 171, pi. 31, fig. 7. 



Description. — Test nearly circular in outline, lenticular, or bicon- 

 vex, usually much compressed, with a thin, acute peripheral border; 

 chambers numerous, long, narrow, curved, surface smooth or nearly 

 so; sutures distinct but not depressed; periphery often somewhat 

 lobulated; wall calcareous, perforate, smooth; aperture a long, nar- 

 row slit, just below, and nearly parallel to the periphery of the test; 

 color white. 



Length 0.9 mm. 



Distrihutioji. — This and the following species are both very widely 

 distributed, being known from both the Arctic and Antarctic and 

 all the great ocean basins. In the Atlantic it is recorded from numer- 

 ous stations off the British Isles, off Norway and Sweden, Spitzbcrgen, 

 and Greenland. In the western Atlantic it occurs at several stations 

 along the Atlantic coast of the United States, and is recorded from 

 Gaspe Bay, Gulf of St. Lawrence, and off Labrador. Brady, Parker, 

 and Jones record it from the Abrolilos Bank off Brazil, and Pearcey 

 records it from Stanley Harbor, Falkland Islands, in 2| fathoms 

 (4 meters), as well as in deep water in the same general region. It 

 seems to be represented in rather shallow water in the Gulf of Mexico 

 by a distinct variety, which is here described. 



D'Orbigny's original figure and Modele show a test without a 

 definite carina, which is a form commonly found, especially in cold 

 and deep waters. 



