FORAMINIFERA OF THE NORTH PACIFIC OCEAN. 51 



Lincei, vol. 35, 1883, p. 198, pi. 3, fig. 42.— H. B. Brady, Rep. Voy. Chal- 

 lenger, Zoology, vol. 9, 1884, p. 684, pi. 104, figs. 18a-c. — Sherborn and 

 Chapman, Journ. Roy. Micr. Soc, 1886, p. 757, pi. 16, fig. 18.— Egger, 

 Abh. kon. bay. Akad. Wiss. Miinchen, CI. n, vol. 18, 1893, p. 405, pi. 18, 

 figs. 28-30, 34, 35— Goes, Kongl. Svensk. Vet. Akad. Handl., vol. 25, 

 No. 9, 1894, p. 95, pi. 16, fig. 801.— Flint, Rep. U. S. Nat. Mus., 1897 (1899), 

 p. 328, pi. 72, fig. 8. — Jones and Chapman, in A Monograph of Christmas 

 Island, 1900, p. 228, pi. 20, fig. 1.— Millett, Journ. Roy. Micr. Soc, 1903, 

 p. 496.— Chapman, Journ. Quekett Micr. Club, ser. 2, vol. 10, 1907, p. 138 — 

 Bagg, Bull. U. S. Nat. Mus., vol. 34, 1908, p. 163.— Sidebottom, Mem. and 

 Proc. Manchester Lit. and Philos. Soc, vol. 53, No. 21, 1909, p. 5.— Chap- 

 man, Journ. Linn. Soc. Zoology, vol. 30, 1910, p. 422.— Bagg, Bull. U. S. 

 Geol. Surv., No. 513, 1912, p. 87, pi. 24, figs. 5-8. 



Description. — Test almost equally biconvex; peripheral margin 

 acute, slightly lobulated, carinate; chambers seven or eight in the 

 last formed whorl; sutures somewhat curved above, nearly radial 

 below, limbate on both surfaces, on the ventral side running into 

 one another and merging at the umbilical area; wall smooth, finely 

 punctate; aperture a slightly arched opening halfway between the 

 umbilicus and the peripheral margin. 



Diameter up to 1.5 mm. 



Distribution. — Bagg records this species from two Albatross stations 

 off the Hawaiian Islands, D4017 in 305 fathoms and H4694 in 865 

 fathoms. These are the only records for the North Pacific. 



PULVINULINA CONCENTRICA Parker and Jones. 

 Plate 28, fig. 4. 



Pulvinulina concentrica (Parker and Jones, MS.) H. B. Brady, Trans. Linn. 

 Soc, London, vol. 24, 1864, p. 470, pi. 48, fig. 14. — Parker and Jones, 

 Philos. Trans., vol. 155, 1865, p. 393.— H. B. Brady, Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 686, pi. 105, fig. \a~b. — Uhlig, Jahrb. k. geol. 

 Reichs., vol. 36, 1886, p. 190, pi. 3, figs. 3, 4. — Grzybowski, Rozprawy 

 Wydz. Mat.-Przyr. Akad. Umiej.-Krakowie, vol. 29, 1894, p. 202, pi. 4, 

 fig. 9. — Millett, Journ. Roy. Micr. Soc, 1904, p. 497. — Sidebottom, Mem. 

 and Proc. Manchester Lit. and Philos. Soc, vol. 53, 1909, No. 21, p. 7, pi. 

 3, fig. 5.— Chapman, Proc. Roy. Soc. Victoria, vol. 22, 1910, p. 287. — Side- 

 bottom, Mem. and Proc. Manchester Lit. and Philos. Soc, vol. 54, 1910, No. 

 16, p. 28. 



Discorbina vestita Seguenza, Mem. Accad. dei Lincei, ser. 3, vol. 6, 1880, 

 p. 148, pi. 13, fig. 39. 



Description. — Test biconvex, oral; chambers comparatively few, 

 five to seven in the last formed coil, carinate; sutures covered by a 

 clear shell material joining with the carinal border and often covering 

 a large portion of the test, both above and below; aperture near the 

 peripheral border on the ventral side- 

 Diameter up to 2 mm. 



Distribution. — Apparently there are no published North Pacific 

 records for this species. I have had specimens from Albatross 

 stations D4087 in 44 fathoms and D4922 in 60 fathoms, bottom 

 temperature 79.2° F., both stations off Japan. 



