58 BULLETIN- 10 4, UNITED STATES NATIONAL MUSEUM 



TRILOCULINA CIRCULARIS BornemanH 



Plate 13, Figures 6, 7; Plate 14, Figures 1, 2 



Triloculina circularis Bornemann, Zeitschr. deutsch. geol. Ges., vol. 7, 1855, p. 

 349. — Reuss, Sitz. Akad. Wiss. Wien, vol. 48, pt. 1, 1863, p. 41. — Cushman, 

 Bull. 71, U. S. Nat. Mus., pt. 6, 1917, p. 67, pi. 25, fig. 4; pi. 26, fig. 1; 

 Publ. 213, Carnegie Instit. Washington, 1918, p. 290; Proc. U. S. Nat. 

 Mus., vol. 56, 1919, p. 638; Bull. 100, U. S. Nat. Mus., vol. 4, 1921, p. 

 462, pi. 92, figs. 1, 2; Publ. 311, Carnegie Instit. Washington, 1922, p. 

 73. — HoFKER, Flora en Fauna der Zuiderzee, Protozoa, 1922, p. 135, text 

 fig. 15. — Cushman, Publ. 342, Carnegie Instit. Washington, 1924, p. 69, pi. 

 25, figs. 5, 6; Publ. 344, 1926, p. 82. 



Miliolina circularis H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 169, pi. 4, figs. 3 a-c; pi. 5, figs. 13, 14. — Sherborn and Chapman, 

 Journ. Roy. Micr. Soc, ser. 2, vol. 6, 1886, p. 742, pi. 14, figs. 2 a, b.-~ 

 HowcHiN, Trans. Proc. Roy. Soc. So. Australia, vol. 13, 1890, p. 162. — 

 Terrigi, Atti Accad. Lincei, ser. 4, Mem., vol. 6, 1893, p. 108, pi. 4, fig. 

 10. — A. SiLVESTRi, Mem. Accad. Pont. Nuovi Lincei, vol. 9, 1893, p. 188. — 

 Woodward, The Observer, vol. 4, 1893, p. 76. — Egger, Abhandl. kon. bay. 

 Acad. Wiss. Munchen, CI. II, vol. 18, 1893, p. 235, pi. 2, figs. 61-63.— 

 Chapman, Proc. Zool. Soc. London, 1895, p. 9. — Goi^s, Bull. Mus. Comp. 

 Zool., vol. 29, 1896, p. 82. — Millett, Journ. Roy. Micr. Soc, 1898, p. 499, 

 pi. 11, figs. 1, 3 (not fig. 2). — Chapman, Journ. Linn. Soc. Zool., vol. 28, 

 1900, p. 173.— Wright, Ann. Mag. Nat. Hist., ser. 6, vol. 4, 1900, p. 52. — 

 SiDEBOTTOM, Mem. Proc. Manchester Lit. Philos Soc, vol. 48, No. 5, 

 1904, p. 8. — Earland, Journ. Quekett Micr. Club, ser. 2, vol. 9, 1905, p. 

 196.— Chapman, Trans. New Zealand Instit., vol. 38, 1905 (1906), p. 81.— 

 Dakin, Rep't Ceylon Pearl Oyster Fish., vol. 6, 1906, p. 229. — Chapman, 

 Journ. Quekett Micr. Club, ser. 2, vol. 10, 1907, p. 121; Journ. Linn. Soc. 

 Zool., vol. 30, 1907, p. 17, pi. 2, fig. 27. — Millett, Rec Foram. Galway, 



1908, p. 5.— Cushman, Proc. Boston Soc. Nat. Hist., vol. 34, 1908, p. 26, pi. 

 5, figs. 5, 6, 10. — Heron-Allen and Earland, Journ. Roy. Micr. Soc, 



1909, p. 313. — Chapman, Subantarctic Islands New Zealand, 1909, p. 318; 

 Journ. Linn. Soc. Zool., vol. 30, 1910, p. 397. — Sidebottom, Mem. Proc. 

 Manchester Lit. Philos. Soc, vol. 54, No. 16, 1910, p. 3. — Schubert, 

 Abhandl. geol. K. K. Reichs., vol. 20, pt. 4, 1911, p. 124. — Heron-Allen 

 and Earland, Proc. Roy. Irish Acad., vol. 31, pt. 64, 1913, p. 26. — Pear- 

 CEY, Trans. Roy. Soc. Edinburgh, vol. 49, 1914, p. 995. — Chapman, Biol. 

 Res. Endeavour, vol. 3, pt. 1, 1915, p. 8; Victorian Nat., vol. 32, 1915, p. 49, 

 fig. 2 in te.xt. — Heron-Allen and Earland, Trans. Zool. Soc London, vol. 

 20, 1915, p. 557; Trans. Linn. Soc London, ser. 2, vol. 11, 1916, p. 209.— 

 Chapman, Rep't British Antarctic Exped., Geol., vol. 2, 1916 (1917), p. 42, 

 pi. 5, fig. 3. — Halkyard, Mem. Proc. Manchester Lit. Philos. Soc, vol. 

 62, pt. 2, 1918(1919), p. 10.— Sidebottom, Journ. Roy. Micr. Soc, 1918, 

 p. 8. — Heron-Allen and Earland, Bull. Soc. Sci. Hist. Nat. Corse, 1922, 

 p. 116; British Antarctic Exped., Zool., vol. 6, 1922, p. 64; Journ. Roy. 

 Micr. Soc, 1924, p. 131. — Sidebottom, Journ. Roy. Micr. Soc, 1918, p. 8, 

 pi. 1, figs. 19-21. — Heron-Allen and Earland, Journ. Linn. Soc Zool., 

 vol. 35, 1924, p. 604; Trans. Zool. Soc. London, vol. 22, pt. 1, 1926, p. 69 

 (list). — Chapman, New Zealand Geol. Surv., Pal. Bull., No. 11, 1926, p. 25, 

 pl. 7, fig. 7. 



Test rounded, compressed, the periphery rounded, the three cham- 

 bers making up the visible portion of the test, rounded, inflated, 

 last-formed chamber strongly embracing; sutures distinct, depressed; 



