FORAMINIFEKA OF THE ATLANTIC OCEAN 37 



MASSILINA SECANS d'Orbigny 



Plate 7, Figures 3, 4 



Quinqueloculina secans d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 303, No. 43, 

 Modeles, No. 96.— Bronn, Lethaea Gcognostica, cd. 2, 1837, p. 1146, pi. 

 42, figs. 32 a-c— RoEMER, Neues Jahrb., 1838, p. 393, pi. 3, fig. 77.— Par- 

 ker, Jones, and Brady, Ann. Mag. Nat. Hist., ser. 3, vol. 16, 1865, p. 34, 

 pi. 1, fig. 10; ser. 4, vol. 8, 1871, p. 250, pi. 8, fig. 14.— H. B. Brady, Nat. 

 Hist. Trans. Northumberland and Durham, vol. 1, 1865 (1867), p. 94. — 

 Karrer, in von Drasche, Frag. Geol. Luzon, 1878, p. 88, pi. 5, fig. 7. — 

 BtJTSCHLi, in Bronn, Klassen und Ordnungen Thierreichs, 1880, p. 189, pi. 

 4, fig. 11.— Basset, Ann. Soc. Sci. Charente-Inf., 1884 (1885), p. 163, 

 fig. — KiAER, Rep't Norwegian Fish, and Mar. Invest., vol. 1, No. 7, 1900, 

 p. 28. 



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

 p. 167, pi. 6, figs. 1, 2. — Balkwill and Millett, Journ. Micr., vol. 3, 



1884, p. 6. — Balkwill and Wright, Trans Roy. Irish Acad., vol. 28, Sci., 



1885, p. 324. — Sherborn and Chapman, Journ. Roy. Micr. Soc, ser. 2, 

 vol. 6, 1886, p. 742, pi. 14, fig. 4.— Howchin, Trans. Proc. Roy. Soc. So. 

 Australia, vol. 12, 1889, p. 3. — Chaster, First Rep't Southport Soc. Nat. 

 Hist., 1890-91 (1892), p. 55.— Howchin, Trans. Proc. Roy. Soc. So. Aus- 

 tralia, vol. 13, 1890, p. 163. — Egger, Abhandl. kon. bay. Akad. Wiss. 

 Miinchen, CI. II, vol. 18, 1893, p. 237, pi. 2, figs. 59, 60.— Goes, Kongl. 

 Svensk. Vet. Akad. Handl., vol. 25, No. 9, 1894, p. 112, pi. 20, figs. 856- 

 856^. — A. Silvestri, Atti Accad. Sci. Acireale, vol. 7, 1896, p. 17. 



Massilina secans Schlumberger, Mem. Soc. Zool. France, vol. 6, 1893, p. 

 218, pi. 4, figs. 82, 83, text figs. 31-33.— Fornasini, Mem. Accad. Sci, 

 Istit. Bologna, ser. 5, vol. 8, 1900, p. 10, figs. 10-13; ser. 5, vol. 10, 1902, 

 p. 25. — Sidebottom, Mem. Proc. Manchester Lit. Philos. Soc, vol. 48, 

 No. 5, 1904, p. 18. — Earland, Journ. Quekett Micr. Club, ser. 2, vol. 9, 

 1905, p. 197. — Millett, Rec Foram. Galway, 1908, p. 5. — Heron-Allen 

 and Earland, Journ. Roy. Micr. Soc, 1909, p. 317. — Sidebottom, Mem. 

 Proc. Manchester Lit. Philos. Soc, vol. 54, No. 16, 1910, p. 6. — Heron- 

 Allen and Earland, Proc. Roy. Irish Acad., vol. 31, pt. 64, 1913, p. 34; 

 Trans. Zool. Soc. London, vol. 20, 1915, p. 582, pi. 44, figs. 24-27; Trans. 

 Linn. Soc. London, vol. 11, ser. 2, 1916, p. 215. — Cushman, Bull. 71, 

 U. S. Nat. Mus., pt. 6, 1917, pp. 15, 16, 59, text figs. 17-20.— Martinotti, 

 Atti Soc. Ital. Sci. Nat., vol. 59, 1920, p. 310, text figs. 122, 123.— Heron- 

 Allen and Earland, Bull. Soc. Sci. Hist. Nat. Corse, 1922, p. 122; Journ. 

 Roy. Micr. Soc, 1924, p. 133. 



Vermiculum disciforme Macgillivray, Hist. Moll. Anim. Aberdeen, 1843, 

 p. 319. 



Miliolina seminulum (Linnaeus), var. disciformis Williamson, Rec. Foram. 

 Gt. Britain, 1858, p. 86, pi. 7, figs. 188, 189. 



Test in the early stages quinqueloculine, later with the chambers 

 added in one plane, in side view rounded, nearly as broad as long, in 

 end view narrow; periphery rounded or acute, sometimes keeled; 

 chambers distinct, usually four or five visible on each side; sutures 

 distinct, depressed; wall smooth; aperture elongate, usually with a 

 simple tooth. 



Length up to 1 .5 mm. ; breadth, 1 .30 mm. ; thickness, 0.35-0.50 mm. 



