FORAMINIFERA OF TMF ATLANTIC OCEAN. 47 



Reophax Riiumbler, Naclir. Kongl. Ges. Wiss. Gottingen, 1895, p. 82. 



Difflugia Egger, Abh. Kongl. Bay. Akad. Wiss. Miinchen, vol. 18, 1895, p. 251 



(not Difflugia Leclerc, 1815). 

 Saccammina (part) Eimer and Fickert, Zeitschr. Wiss. Zool., vol. 65, 1899, p. 671. 



Description. — Test free, consisting of a single nndividcd chamber, 

 flask shaped or fusiform with a single aperture, wall composed of 

 coarse sand grains, mica flakes, or other foreign material, test usually 

 broadest near the base and gradually tapering more or less evenly 

 to the apertural end; aperture usually circular, with commonly a 

 slight neck which in some species is prominent and extended. 



The species described here of mica flakes is a new form of test for 

 this group, although it is known in Reophax, Psammosphaera, etc. 



PROTEONINA FUSIFORMIS Williamson. 



Proteonina fudformis Williamson, Recent Foraminifera of Great Britain, 1858, 

 p. l,pl. l,fig.l.— Rhumbler, Arch. Prot., vol. 3, 1903, p. 248, fig. 84 (in text).— 

 CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 1, 1910, p. 41, fig. 39 (in text).— 

 Rhumbler, Foram. rianlrton-Exped., pt. 1, 1911, pi. 2, fig. 15; pt. 2, 1913, 

 p. 379. 



Reophax fusiforviis H. B. Brady, Denkschr. Kongl. Akad. Wise. Wien, vol. 43, 

 pt. 2, 1882, p. 99; Rep. Voy. Challenger, Zoolog>^ vol. 9, 1884, p. 290, pi. 30, 

 figs. 7-11. — H. B. Brady, Parker, and .Tones, Trans. Zool. Soc, vol. 12, 

 1888, p. 217, pi. 41, fig. 18.— MiLLETT, Journ. Roy. Micr. Soc, 1899, p. 253, 

 pi. 4, fig. 11.— Bagg, Proc. U. S. Nat. Mus., vol. 34, 1908, p. 125.— Heron- 

 Allen and Earland, Proc. Roy. Irish Acad., vol. 31, No. 04, 1913, p. 42.— 

 Chapman, Zool. Results Endeavour, vol. 3, pt. 1, 1915, p. 15. — Heron-Allen 

 and Earland, Trans. Linn. Soc. London, vol. 11, 1916, p. 222. 



Litnola fusiformis J . Wright, Rep. Belfast Club, 1876-77, Append., table. 



Lituola nauliloiden, var. scorpiurus W. B. Carpenter, in Parker and Jones, 

 Introduction to the Study of the Foraminifera, 1862, Append., p. 309. 



Descnption. — Test free, fusiform, asymmetrical, chamber usually 

 single, sometimes incompletely divided by projections of the wall; 

 wall composed of coarse sand grains, rough on the exterior, firmly 

 cemented; aperture terminal, circular. 



Length, up to 1 mm. 



Distribution. — Brady records this species from various stations 

 about the British Isles and to the northward as far as 78° 40' N. 

 It occurs occasionally on the western side of the Atlantic, but not 

 nearly as often as P. diffiugiformis. 



PROTEONINA DIFFLIIGIFORMIS (H. B. Brady). 



Plate 21, figs. 1,2. 



Reophax difflugiformis H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, p. 51, 

 pi. 4, figs. 3a, b; Denkschr. Akad. Wiss. Wien, vol. 43, pt. 2, 1882, p. 99; 

 Proc. Roy. Soc Edinburgh, vol. 11, 1882, p. 715; Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 289, pi. 30, figs. 2-4 (not 1, 5).— Goes, Kongl. Svensk. 

 Vet. Akad. Ilandl., vol. 25, No. 9, 1894, p. 26, pi. 6, figs. 196-198; Bull. Mus. 

 Comp. Zool., vol. 29, 1896, p. 28.— Flint, Rep. U. S. Nat. Mus., 1897 (1899), 

 p. 272, pi. 16, fig. 2.— MiLLETT, Journ. Roy. Micr. Soc, 1899, p. 252.— Dakin, 

 Rep. ("eyion Pearl Oyster Fisheries, vol. 5, 1906, p. 232.- -Heron-Allen and 

 Earland, Proc Roy. Irish Acad., vol. 31, No. 64, J913, p. 42, Trans. Zool. 

 ."^oc. vol. 20, 1915, p. (il2; Trans. Linn. Soc. London, vol. Jl, 1916, p. 222; 

 Journ. Roy. Micr. Soc, 1916, p. 40. 



