FORAMINIFERA OF THE ATLANTIC OCEAN. 



3 



exterior only slightly rugose, interior surface smooth. Length, J 

 inch (8 mm.)." 



Distribution. — Scattered Atlantic stations, mostly from consider- 

 able depths, are the following: Challenger stations, 44, west of our 

 own coast, latitude 37° 25' N.; longitude 71° 40' W., depth, 1,700 

 fathoms (3,109 meters); bottom temperature, 36.2° F. (2.3° C); 

 station 85, off the Canary Islands, latitude 28° 42' N., longitude 18° 

 06' W., depth, 1,125 fathoms (2,057 meters); station 348, off the 

 coast of Africa, just north of the equator, latitude 3° 10' N., longitude 

 14° 51' W., depth, 2,450 fathoms (4,480 meters), and station 325, 

 South Atlantic, east of Buenos Aires, 1,900 fathoms (3,475 meters), 

 bottom temperature 32° F. (0° C). Pearcey records it as rare from 

 one Scotia station in the Antarctic, 420, latitude 69° 33' S., longitude 

 15° 19' W., in 2,620 fathoms (4,791 meters). 



In the Albatross material I have found it but once — from D2150, 

 in the western Caribbean, off Central America, in 382 fathoms, 

 (699 meters). This specimen is typical, branching, with very 

 elongate cylindrical branches, the walls thm and firm, with some 

 sponge spicules embedded in the exterior. The specimen measures 

 nearly 7 mm. in length. 



Brady's figures in the Challenger Report show the interior walls 

 dividing the chambers from one another. 



Aschemonella ramuUforniis—viaterial examined. 



ASCHEMONELLA CATENATA (Norman). 



Plate 1, figs. 2-4. 



Astrorhiza catenata Norman, Proc. Roy. Soc, vol. 25, 1876, p. 213. 



Aschemonella catenata H. B. Brady, Qjart. Journ. Micr. Sci., vol. 19, 1879, 

 p. 42, pi. 4, figs; 12, 13; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 271, 

 pi. 27, figs. 1-11; pi. 27 A, figs. 1-3.— Millett, Jojrn. Roy. Micr. Soc, 1899, 

 p. 252, pi. 4, figs. 5, 6.— Chapman, The Foraminifera, 1902, p. 126, pi. 6, 

 fig. 1.— CusHMAN, Ball. 71, U. S. Nat. Mus., pt. 1, 1910, p. 81, fig. 111-113.— 

 Pearcey, Trans. Roy. Soc. Edinburgh, vol. 49, 1914, p. 1005. 



Aschemonella scabra H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, p. 

 44, pi. 3, figs. 6, 7. 



Description. — "Test free, irregularly branched; chambers numerous,, 

 inflated, variable in size and contour, usually with several tubulated 

 orifices, each of wliich may produce a fresh segment. Walls thin. 



