PORAMINIFERA OF THE ATLANTIC OCEAN. 53 



CYCLAMMINA CANCELLATA H. B. Brady. 



Plate 10. %'. 4 and .">. 



"Nautiloid Li'imhi" W. B. Carpentkk, Tlie Microsco})e. ed. 5, 1875. p. 5;-$(), 

 figs. 2Jia. b. c (in text^. 



Cyckimmina cmaUn'n 11. B. B«\nY (MS.) ia Norman. Proc. Ray. Sor.. vol. 25, 

 1876. p. 214; Quart. .Tourn. Micr. Sci., vol. It), 187^, p. 02; Rep. Voy. Chal- 

 lenger, Z;):ilog\', vol. 9, 1884. ]>. .T)l. ])1. 37. fig.s. 8-16. — AflAS.«iiz, Bull. Muh' 

 (\)mi). Zro'., vol. 2!), 18S8, p. 164, fig^. 4^)8, 49& (in text).— J. WkuiHT, Proc 

 Roy. Tri^li .Vcad.. per. 3. vol. 1. 18!)1. p. 470. — Chapm.\.n, Proc. Zool. Soo; 

 London. 1895. p. 18.— Goes, Bull. Mus. C.imp. Zco^., vol. 29, 1896. p. 32.— 

 Flint. Re]). U. S. Xat. Mus.. 1897 (1899). p. 282, pi. 21, fig. 3; pi. 28. fig. 1.— 

 Chapman. The Foraminifera. 1902. p. 158, pi. 8, figs. N, w.— Ba(;g. Proc. 

 U. S. Nat. Mus.. vol. 34. 1908. p. 129.— Gushman, Bull. 71, U. S. Nat. Mus., 

 pt. 1, 1910. p. 110, fig?. 168-171.— Pearcev, Traas. Roy Soo. Edinburgh, vol. 

 49, 1914, p. 1009. 



Liluola c'inarien.ns Carter .\nn. Mag. Nat. Hist., ser. 4, vol 19, 1877, p. 203, ])l 

 13, fgs. 26-29. 



Descnption. — Test largo, coin pressed, planospiral, composed of two 

 or three coils, periplieiy broadly rounded, smooth or very slightly 

 lobiilated. somewhat depressed in the umbilical region; chambers 

 niunei-ous. usually fifteen or more in the last-formed coil, sutures dis- 

 tinct, but not tlepressed, sigmoid, interior labyrinthic, especially the 

 peripheral portion, the interior of each chamber having a larger cavity;; 

 wall arenaceous, with an excess of yellowish or red<Hsh brown cement 

 often W'ith fairly large angular sand grains but these smoothly finished 

 into the suiiace which has often a dull gloss; aperture an elongated 

 curved slit at the base of the chamber with supplementary circular 

 pores in the face of the chamber, variously arranged, often numerous 

 in the larger sj)ecimens; color yellowish or red(hsh-])rown or gray. 



Diameter up to 6,5 mm. 



Distribution. — This is a widely distributed species. The various- 

 species previously included under this name have been separated' and- 

 need (hita of their distribution. In the Albatross material C. cancellata 

 occurs abunchintly off the eastern coast of the United States, in the 

 Gulf of Mexico, Caribbean Sea, and off the coast of Brazil. All but two 

 of the twenty-nine stations are in less than 1,000 fathoms (1,829 me- 

 ters) and the other two are not gn^atly in excess of this depth. This 

 is not necessarily significant except that the two allied species C. com- 

 pressa and C. pauclloculata occur at greater average depths in the 

 same general area. 



C. cancellata may be distinguished from the others by its larger 

 size but especially by its broadty rounded periphery with numerous 

 chambers, usuallv fifteen or more in the last-formed coil. 



