FORAMINIFERA OF NORTH PACIFIC OCEAN. 



37 



when attached, no definite aperture, wall thin, composed of fine sand, 

 the particles firmly united by an abundance of cement which fills up 

 the interstices to a large extent, color grayish or brown. 



Diameter usually less than 1 mm. 



Distribution. — Specimens which seem to be referable to this species 

 have been noted at three stations in the North Pacific — Albatross 



Figs. 29-30.— Psammosph.era pakva. 29, specimen attached to large sponge spicule, X 50. 



30, SMALLER SPECIMEN (AFTER BRADY), X 40. 



station H2899 in 1,531 fathoms, east of the Hawaiian Islands, and 

 D4979 in 943 fathoms, south of Honshu Island, Japan, also Nero 

 station 1321, in 1,618 fathoms near the Bonin Islands. 



There seems to be some variation in color in the specimens and the 

 degree to which the cement fills the irregularities of the wall. 



Genus SOROSPH^ERA H. B. Brady, 1879. 



Sorosphivra H. B. Brady (type, S. confusa H. B. Brady), Quart. Journ. Micr. 

 Sci.,vol. 19, 1879, p. 28; Rep. Voy. Challenger, Zoology, vol. 9, 1884,. p.251 — 

 Rhumbler, Arch. Protistk., vol. 3, 1903, p. 235. 



Description. — Test consisting of a colony of more or less inflated 

 chambers, without definite apertures, the walls joined to one another, 

 composed of sand grains with interstitial openings. 



The following species has been recorded from the North Pacific 

 by Brady : 



SOROSPH^ERA CONFUSA H. B. Brady. 



Sorosphsera confusa H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, p. 28, 

 pi. 4, figs. 18, 19; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 251, pi. 18, figs. 

 9, 10.— Rhumbler, Arch. Protistk., vol. 3, 1903, p. 235, fig. 63 (in text). 



Description. — "Test free, consisting of a number of inflated or spher- 

 ical chambers of nearly uniform size, irregularly crowded together and 



