FORAMINIFERA OF THE ATLANTIC OCEAN. 



69 



oblique, later ones less so, slightly depressed ; wall smooth ; aperture 

 radiate, eccentric, very slightly extended. 



Length up to 1 mm. 



Distiibution. — Type-specimen (U.S.N.M. Cat. No. 18779) from 

 Albatross station D2756, in 417 fathoms (763 meters), off the coast 

 of Brazil. It has also occurred at stations in the Gulf of Mexico and 

 in the Caribbean. 



This is a peculiar form in its very short chambered test, initial end 

 broadly rounded, arcuate form, and the eccentric aperture. It is 

 apparently limited to the warmer portion of the western Atlantic. 



Nodosaria atlantica — material examined. 



NODOSARIA PYRULA D'Orbigny. 



Plate 16, figs. 1-4. 



" Orthoceras Monile " Soldani, Testaceographia, vol. 2, 1798, p. 35,' pi. 10, 

 figs, b, c. 



Nodosaria pyrula D'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 253, No. 13. — 

 Williamson, Rec. Foram. Great Britain, 1858, p. 17, pi. 2, fig. 39. — 

 Balkwill and Wright, Proc. Roy. Irish Acad., ser. 2, vol. 3, 1882, 

 p. 548. — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 497, pi. 62, figs. 10-12 ; Journ. Roy. Micr. Soc, 1887, p. 908.— Balk- 

 will and Wright, Trans. Roy. Irish Acad., vol. 28, 1885, p. 343, pi. 12, 

 fig. 23. — H. B. Brady, Parker, and Jones, Trans. Zool. Soc. London, 

 vol. 12, 1888, p. 223, pi. 44, fig. 2.— Robertson, Proc. Nat. Hist. Soc. 

 Glasgow, pt. 3, 1892, p. 241.— Egger, Abh. kon. bay. Akad. Wiss. 

 Munchen, CI. II, vol. 18, 1893, p. 345, pi. 11, figs. 14, 15.— Woodward, 

 The Observer, vol. 4, 1893, p. 143. — Chapman, Proc. Zool. Soc. London, 

 pt. 1, 1895, p. 30.— Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 309, 

 pi. 55, fig. 4.— Wright, Irish Nat., vol. 9, No. 3, 1900, p. 54.— Millett, 

 Journ. Roy. Micr. Soc, 1902, p. 514. — Balkwill and Millett, Rec. 

 Form. Galwaj% 1908, p. 6. — Chapman, Subantarctic Ids. New Zealand, 

 1909, p. 341.— CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 3, 1913, p. 49, 

 pi. 26, figs. 1-3. — Heron-Allen and Earland, Proc. Roy. Irish Acad., 

 vol. 31, pt. 64, 1913, p. 92.— Chapman, Biol. Res. Endeavour, vol. 3, 

 pt. 1, 1915, p. 23. — Heron-Allen and Earland, Trans. Linn. Soc. 

 London, ser, 2, vol. 11, 1916, p. 256; Journ. Roj\ Micr. Soc, 1916, p. 

 47. — Sidebottom, Journ. Roy. Micr. Soc, 1918, p. 132. — Cushman, Proc. 

 U. S. Nat. Mus., vol. 56, 1919, p. 611 ; Bull. 100, U. S. Nat. Mus., vol. 4, 

 1921, p. 187, pi. 33, figs. 3-5. 



Description. — Test elongate, very slender, composed of numerous 

 chambers, either in a straight or slightly curved line, pyriform in 



