FOEAMINIFERA OF THE PHILIPPINE AND ADJACENT SEAS. 



45 



Makyan Islands; and D56G8 in 901 fathoms (1,648 meters). Macassar 

 Strait, bottom temperature 38.2' F. (3.3° C). 



BATHYSIPHON PAPYEACEUS Cushman. 



Plate 2, figs. -5 a, h. 

 Bathysiphon papyraceus Cushman, Proc. U. S. Nat. Mus., vol. 51, 1917, p. 651. 



Description. — Test much elongate, n-regularly curved, cylindrical, 

 of even diameter; wall thin, friable, of sponge spicules with a small 

 amount of cement, white in color, with the surface of light grayish- 

 green in irregular bands; lines of growth very prominent. 



Diameter up to 3 mm. ; length up to 50 mm. 



Distribution. — ^This species was extremely abundant at Albatross 

 station D5247, in 135 fathoms (243 meters), in the Gulf of Davao. 

 Type specimen, U.S.N.M. No. 9100. 



It is very different from the otlier species of the genus in the very 

 tliin wall, which, however, is made up in the same way as the other 

 friable species, and the irregular tube. 



Bathysiphon papyraceus — Material examined. 



Genus RHIZAMMINA H. B. Brady. 1879. 



RHJZAMMINA INDIVISA H. B. Brady. 



Plate 2, fig. G. 

 Rhizammina indivisa H. B. Beady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 277, pi. 29, figs. 5-7.— Cushman, Bull. 71, U. S. Nat. Mus., pt. 1, 1910, p. 34, 

 fig. 24 (in text); Bull. 104, U. S. Nat. Mus., pt. 1, 1918, p. 32. pi. 12, figs. 7-10. 



Tubular specimens with encrusting tests made up mostly of Glo- 

 bigerinidae and apparently belonging to this species were obtained 

 from two stations, H4898, Sulu Sea, 221 fathoms (404 meters), and 

 D5272, China Sea, off southern Luzon, 118 fathoms (216 meters) . At 

 the latter station the tubes were very common. At this station the 

 bottom temperature was 57.4° F. (14.1° C). 



