FOKAMINIFERA OF THE ATLANTIC OCEAN. 



71 



tions, usually short but in some cases of considerable length, becom- 

 ing tubular; color usually yellowish or reddish brown. 



Diameter, up to 1.5 mm. 



Distribution. — From the published records this seems to be a com- 

 mon species. It is known from the followhig Atlantic regions : North 

 Sea and about the British Isles, Faroe Chamicl, 45-1,476 fathoms; 

 at three CJiallenqer stations north of the equator, 390-2,470 fathoms; 

 six Challenger stations in the south Atlantic, 350-2,350 fathoms. 

 From the western Atlantic Flmt records it from Albatross stations 

 D2225, south of Long Island; D2383 and 2385, Gulf of Mexico; 

 D2570, southeast of Georges Bank, and 2760, off the coast of Brazil. 

 These range in depth from 730 to 2,512 fathoms. I have seen the 

 material from these stations and from D2037 in 1,731 fathoms south- 

 westward from Georges Bank, bottom temperature 38° F., and H82 

 from the Caribbean Sea. 



Outside the Atlantic it is loiown from the North and South Pacific 

 and from the Antarctic and fossil specimens from the Jurassic have 

 been assigned to this species. 



Thurammina papillata — material examined. 



THURAMMINA ALBICANS H. B. Brady. 



Plate 28, figs. 4-8. 



Thurammina albicans H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, p. 46; 

 Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 323, pi. 37, figs. 2-7.— Cush- 

 MAN, Bull. 71, U. S. Nat. Mus., pt. 1, 1910, p. 58, figs. G7-72 (in text).— 

 Pearcey, Trans. Roy. Soc. Edinburgh, vol. 49, 1914, p. 1003. 



Thyrammina albicans Riiumbler, Arch. Prot., vol. 3, 1903, p. 237, fig. 67 (in text). 



Brady describes this species as follows : 



Test spherical, or nearly so; with few, usually about six, mammillate orifices, 

 equidistant and regularly disposed. Walls somewhat thicker than those of the type 

 [T. papillata]; texture very finely arenaceous; color nearly white. 



Diameter, about one-ninetieth inch (0.28 mm.). 



Distribution. — The only Atlantic record for this species is the type 

 station, Challenger 323, in 1,900 fathoms, off the South American 

 coast in the latitude of Buenos Aires. It is known from a single 

 station in the North Pacific in 2,050 fathoms (Brad}', (Aishman), 



