FORAMINIFERA OF THE ATLANTIC OCEAN 29 



QUINQUELOCUUNA CONTORTA d'Orbigny 



Plate 3, Figures 6 a-c 



Quinquelocvlina contorta d'Orbigny, Foram. Foss. Bass. Tert. Vienne 1846 



p. 298, pi. 20, figs. 4-6. 

 Miliolina contorta Brady, Journ. Roy. Micr. Soc, 1887, p. 881. — Herron- 



Allen and Earland, Proc. Roy. Irish Acad., vol. 31, pt. 64, 1913, p. 30; 



Trans. Linn. Soc. London, Zool., vol. 11, 1916, p. 213. 



Test somewhat longer than broad; chambers polygonal in trans- 

 verse section, periphery flattened and sides flattened, or slightly con- 

 cave, angles subacute; sutures distinct, slightly depressed ; waU smooth, 

 porcellanous throughout; aperture rounded, slightly projecting, with 

 a simple tooth. 



This species originally decribed by d'Orbigny from the Miocene of 

 the Vienna Basin is recorded from the European side of the Atlantic 

 about the British Isles, off the coasts of Scotland and Ireland as well 

 as from the coast of France. 



QUINQUELOCUUNA TRICARINATA d'Orbigny 



Plate 4, Figures 1 a-c 



Quinqueloculina tricarinata d'Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. 

 Cuba, 1839, "Foraminiferes, " p. 187, pi. 11, figs. 7-9, 11. — Cushman, Proc. 

 U. S. Nat. Mus., vol. 59, 1921, p. 68, pi. 16, figs. 11, 12; Publ. 311, Car- 

 negie Instit. Washington, 1922, p. 67. 



Test elongate, the last-formed chamber extending out beyond the 

 rest of the test at either end ; in young specimens the chambers have 

 three distinct carinae, but in the adult specimens there is a more or 

 less irregular condition, due to obliquely transverse costae dividing 

 up that part of the test into irregular areas ; apertural end extending 

 out into a narrow, cylindrical neck, usually with a slight lip and a 

 single tooth, which may become bifid at the end. 



Length, 1 mm.; breadth, 0.75 mm.; thickness, 0.50 mm. 



D'Orbigny 's original specimens are from Cuba and Jamaica. The 

 species is probably widely distributed in the West Indian region. The 

 relationships to Q. Jcerimhatica (Heron-Allen and Earland) from the 

 Indo-Pacific are marked. 



SPECIES WITH THE SURFACE ORNAMENTED BY COSTAE OR 



STRIAE 



QUINQUELOCUUNA STRIATA d'Orbigny 



Plate 4, Figures 2 a-c 



Quinqueloculina striata d'Orbigny, Ann. Sci. Nat., vol. 7,1826, p. 301, No. 

 4. — Terquem, Mem. Soc. Geol. France, ser. 3, vol. 2, m6m. 3, 1882, p. 184, 

 pi. 20 (28), figs. 10-12. — Cushman, Publ. 311, Carnegie Instit. Washing- 

 ton, 1922, p. 67. 



Miliolina striata Heron-Allen and Earland, Trans. Zool. Soc. London, 

 vol. 20, 1915, p. 579, pi. 44, figs. 13-17. 



