FORAMINIFERA OF THE NORTH PACIFIC OCEAN. 25 



Description. — Test free, subcorneal, apex rounded, concave below, 

 composed of numerous chambers, early ones in a spiral, later ones in 

 concentric rings about the central umbilical cavity, those of one ring 

 alternating with those of the preceding one, all with rather large 

 perforations; aperture of each chamber on the innei side, opening 

 into the central vestibule. 



Diameter 0.50-0.85 millimeters. 



Distribution. — Brady records the occurrence of this species as from 

 the Challenger stations in the North Pacific, depths ranging from 

 7 to 75 fathoms. Rhumbler records it from Laysan Island. Bagg 

 had the species from five stations in the vicinity of the Hawaiian 

 Islands, depths ranging from 104 to 438 fathoms. I have had mate- 

 rial of this species from two stations near the Hawaiian Islands, 

 Albatross H3007 in 323 fathoms and Nero 2071 in 271 fathoms. Off 

 Japan it occurred at Albatross station D4S07 in 44 fathoms. 



CYMBALOPORA POEYI (d'Orbigny), var. BRADYI, new variety. 



Plate 10, fig. 2; plate 14, fig. 2. 



Cymbalopora poeyi var. H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884, p. 637, pi. 102, fig. 14. — Sidebottom, Mem. Proc. Manchester Lit. and 

 Philos. Soc, vol. 54, No. 16, 1910, p. 24. 



Description. — Variety differing from the typical form of the species 

 in its much more compressed form and the much more open arrange- 

 ment of the chambers on the ventral side. 



Distribution. — Tins variety occurred off the Hawaiian Islands, at 

 Albatross station H2923 in 392 fathoms. 



Type-specimen— -Cat. No. 9030, U.S.N.M. 



Brady does not definitely state at what localities he found this 

 variety. 



CYMBALOPORA TABELLjEFORMIS H. B. Brady. 



Cymbalopora tabellxformis H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 18S4, p. 637, pi. 102, figs. 15-18— Egger, Abh. kon. bay. Akad. Wias. 

 Munchen, 01. n, vol. 18, 1893, p. 382, pi. 18, figs. 54, 55.— Millett, Journ. 

 Roy. Micr. Soc, 1904, p. 697. 



Description. — "Test depressed, peripheral outline rounded or oval; 

 superior face complanate, or nearly so, inferior convex, but with an 

 irregular umbilical cavity or recess; peripheral edge obtuse or 

 rounded. Composed of numerous segments, all of which are visible 

 on the superior face ; segments inflated inf eriorly, sometimes arranged 

 in more or less regular alternating annuli, but more frequently dis- 

 posed without apparent order. Shell wall coarsely porous; aperture 

 consisting of a number of large perforations along the lines of the 

 inferior sutural depressions. Colour in fresh shell, brown near the 

 center of the superior face, gradually lighter toward the circum- 

 ference. 



