FORAMINIFERA OF THE ATLANTIC OCEAN 31 



QUINQUELOCULINA COSTATA d'Orbigny 



Plate 3, Figures 7 a-c 



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

 ^- — Terqtjem, M^m. Soc. Geol. France, ser. 3, vol. 1, 1878, p. 63, pi. 6 (11), 

 figs. 3o-5c.— CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 6, 1917, p. 49, pi. 15, 

 fig. 1; Publ. 311, Carnegie Instit. Washington, 1922, p. 66, pi. 11, fig. 5. 



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

 vol. 20, 1915, p. 579, pi. 44, figs. 9-12. 



The specimens from the West Indian region referred to this species 

 are from the Tortugas. They are shorter and stouter than Q. poeyana 

 and Q. suhpoeyana. 



QUINQUELOCULINA POEYANA d'Orbigny 



Plate 5, Figures 2 a-c 



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

 Cuba, 1839, "Foraminiferes," p. 191, pi. 11, figs. 25-27. — Cushman, Proc. 

 U. S. Nat. Mus., vol. 59, 1921, p. 67, pi. 16, figs. 7, 8; Publ. 311, Carnegie 

 Instit. Washington, 1922, p. 66; Publ. 344, 1926, p. 81. 



Test two to three times as long as broad; chambers distinct; 

 sutures slightly depressed; periphery rounded; surface ornamented by 

 numerous longitudinal costae, running from the base of the chamber 

 to the apertural lip; apertural end slightly extended, very slightly, if 

 at all, constricted, lip slight; aperture circular, with a single narrow 

 tooth, somewhat slightly bifid at the tip. 



Length, 0.60 mm.; breadth, 0.35 mm.; thickness, 0.23 mm. 



This is one of the common West Indian species described by 

 d'Orbigny from the shore sands of Cuba. It is known from Cuba, 

 Porto Rico, Jamaica and the Tortugas. It is a more elongate species 

 than Q. costata d'Orbigny, and may be distinguished from Q. suhpoe- 

 yana by its closer form, much more even chambers and more regular 

 costae. 



The aperture as figured by d'Orbigny is much smaller than in the 

 usual run of specimens. 



QUINQUELOCULINA SUBPOEYANA Cushman 



Plate 5, Figures 3 a-c 



Quinqueloculina suhpoeyana Cushman, Publ. 311, Carnegie Instit. Washing- 

 ton, 1922, p. 66. 



Test elongate, about two and one-half times as long as wide; 

 chambers distinct; the apertural end projecting a considerable dis- 

 tance beyond the outline of the test; the peripheral border rounded; 

 surface ornamented by numerous longitudinal costae which, instead 

 of being uniform, are usually irregularly toothed throughout, giving 

 a pecuHar roughened appearance to the test; costae continued to the 

 aperture, which is very sKghtly contracted, with a very thin lip, with 

 a single tooth; surface dull. 



