FORAMINIFERA OF THE ATLANTIC OCEAN. 57 



there arc no specimens in his collection as far as I have seen. How- 

 ever, from Albatross station, D2394, there are nnmerous small spec- 

 imens in the Goes collection with a typical C. cancdlaia, which 

 ought to be referred to C. pusilla, but all are mounted together and 

 labeled C. canceUaia by Goes. Pearcey records it from numerous 

 Scotia stations in the South Atlantic and Antarctic. 



In the Albatross material from the Atlantic I have not found the 

 species, all those smaller specimens being referred to (■. coinpressa, 

 as they are as a rule too large for typical C. pusilla and more definitely 

 like C. compressa. 



There is a possibility of C. pusilla being the young of the species of 

 which C. compressa is the adult, but large specimens arc not mentioned 

 from the southern regions where C. pusilla. seems to be most charac- 

 teristic, and in the Pacific material that I have seen they are not 

 as a rule found together. 



CYCLAMMINA ORBICULARIS H. B. Brady. 



Plate 11, figs. 7-9. 

 Cydammina orbiadans II. B. Brady, Quart. Journ. Micr. .Sci., vol. 21, 1881, p. 

 53; Rep. A'oy. Challenger, Zoology, vol. 9, 1884, p. 353, pi. 37, figs. 17-19.— 

 CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 1, 1910, p. 113, figs. 173r;, b. 



Description. — Test subglobose, planospiral, as broad as high, 

 composed of usually less than two complete coils, surface smooth, 

 glossy, involute, chambers 11-12 in the last-formed coil, much 

 broader' than high, oblique in. side view and triangular, sutures dis- 

 tinct and somewhat depressed; wall of sand grains with abundant 

 cement; aperture a long, narrow, curved slit at the base of the 

 apertural face of the chamber, simple; color various shades of gray 

 and brown. 



Diameter, 1.5-2 mm. 



Distribution. — The only record for the Atlantic seems to be that 

 of the ChaJlcngfr station 323, in 1,900 fathoms (3,475 meters), east 

 of Buenos Aires. I have not found it in the Albatross material. 

 The other records are Challenger station 153, off the Antarctic Ice 

 barrier, 1,675 fathoms (3,063 meters), and station 168, east coast 

 of New Zealand, 1,100 fathoms (2,012 meters) (Brady), west coast 

 of Mexico, Albatross D3419, in 772 fathoms (1,412 meters) (Goes, 

 Cushman), and a questionable specimen ofl" Japan. 



CYCLAMMINA BRADYI Cushman. 



Plate 11, fig. 3. 

 Trochamvnna trullissnta H. B. Brady (part), Rep. Voy. Challenger, Zoology, vol. 9, 



1884, p. 342, pi. 40, fig. 13 (not 14, 15). 

 Cyclammma bradiji Cushman, Bull. 71, U. S. Nat. Mus., pt. 1, 1910, p. 113, figs. 



1740, b. 



Description. — ^Test planospiral, nearly comj)letely involute, slightly 

 umbilicate, compressed, periphery bluntly angled, very slightly lobu- 



