FORAMINIFERA OF THE NORTH PACIFIC OCEAN. 53 



side simple and depressed, dorsally limbate; peripheral margin 

 carinate, dorsally with a raised margin confluent with that of the 

 sutures; surface smooth below, above with numerous rounded bosses 

 scattered thickly over the area between the raised sutural lines. 



Diameter up to 2 mm. 



Distribution. — This species has apparently not previously been 

 recorded from the North Pacific. It occurred in some considerable 

 numbers at Albatross station D4807 in 44 fathoms off Japan. 



PULVINULINA AURICULA (Fichtel and Moll). 

 Plate 22, fig. 1. 



Nautilus auricula, var. a, Fichtel and Moll, Test. Micr., 1803, p. 108, pi. 20, figs. a-c. 



Pulvinulina auricula Parker and Jones, Philos. Trans., vol. 155, 1865, p. 393. — 

 Parker, Jones, and H. B. Brady, Ann. Mag. Nat. Hist., ser. 4, vol. 8, 1871, 

 p. 173, pi. 12, fig. 143. — Terrigi, Atti Accad. Pont. Nuovi Lincei, vol. 33, 

 1880, p. 206, pi. 3, fig. 58.— Goes, Kongl. Svensk. Vet. Akad. Handl., vol. 19, 

 pt. 4, 1882, p. 109, pi. 8, figs. 273-275.— H. B. Brady, Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 688, pi. 106, figs. 5a-c. — Chapman, Trans. New 

 Zealand Inst., vol. "38, 1905, p. 105. 



Description. — Test elongate oval, biconvex, the dorsal side slightly 

 convex, the ventral side more strongly so ; peripheral margin in later 

 chambers acute, in the early ones rounded ; chambers six or seven in 

 the last-formed whorl, rapidly increasing in size and length, the last- 

 formed chamber especially on the ventral side occupying the larger 

 part of the whole area of the test; sutures but very slightly de- 

 pressed, distinct; wall smooth, thin and translucent, finely per- 

 forate; aperture a narrow slit near the umbilicate end of the 

 chamber. 



Diameter up to 1 mm. 



Distribution. — Brady in the Challenger Report gives the only 

 North Pacific record for this species in 95 fathoms off the Philippines. 

 From the available records this species does not extend to very 

 great depths, which may account for the fact that I have not found 

 it in the North Pacific material which I have examined. 



PULVINULINA OBLONGA (Williamson), var. SCABRA H. B. Brady. 



Plate 27, fig. 5. 



Pulvinulina oblonga (Williamson), var. scabra H. B. Brady, Rep. Voy. Chal- 

 lenger, Zoology, vol. 9, 1884, p. 689, pi. 106, fig. 8a-c. — H. B. Brady, Parker, 

 and Jones, Trans. Zool. Soe. London, vol. 12, 1888, p. 229, pi. 46, fig. 5 — 

 Sidebottom, Mem. and Proc. Manchester Lit. and Philos. Soc, vol. 53, No. 

 21, 1909, p. 6, pi. 3, figs. 3, 4; vol. 54, No. 16, 1910, p. 27. 



Description. — Test biconvex, dorsal side nearly flattened, ventral 

 side more convex; peripheral margin acute, carinate; chambers 

 seven or eight in the final whorl, rapidly increasing in size and length 

 as added, on the ventral side the last formed chamber in the adult 



