FORAMINIFEKA OF THE NOETH PACIFIC OCEAN. 31 



POLYSTOMELLA STRIATO-PUNCTATA (Fichtel and Moll). 



Plate 18, fig. 2. 



Nautilus strinto-punctatus Fichtel and Moll, Test. Micr., 1803, p. 61, pi. 9, 

 figs. a-c. 



Polystomella striato-punctata Parker and Jones, Ann. Mag. Nat. Hist., ser. 3, 

 vol. 5, 1860, p. 103, No. 6. — Terrigi, Atti Accad. Pont. Nuovi Lincei, ann. 

 33, 1880, p. 216, pi. 4, figs. 73, 74.— H. B. Brady, Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 733, pi. 109, figs. 22, 23.— H. B. Brady, Parker, 

 and Jones, Trans. Zool. Soc, vol. 12, 1888, p. 230, pi. 43, fig. 17.— Egger, 

 Abh. kon. bay. Akad. Wiss. Munchen, CI. n, vol. 18, 1893, p. 433, pi. 19, 

 figs. 49, 50.— Goes, Kongl. Svensk. Vet. Akad. Handl., vol. 25, 1894, p. 101, 

 pi. 17, figs. 815 (part) 822.— Morton, Proc. Portland Soc. Nat. Hist., vol. 2, 

 1897, p. 122, pi. 1, fig. 19.— Flint, Ann. Rep. U. S. Nat. Mus., 1897 (1899) 

 p. 337, pi. 80, fig. 2.— Wright, Geol. Mag., dec. 4, vol. 7, 1900, p. 100, pi. 5, 

 fig. 24.— Millett, Journ. Roy. Micr. Soc, 1904, p. 602. — Rhumbler, Zool. 

 Jahrb., Abteil. Syst., vol. 24, 1906, p. 73, pi. 5, figs. 61, 62.— Bagg, Proc. 

 U. S. Nat. Mus., vol. 34, 1908, p. 165.— Cushman, Proc. Boston Soc. Nat. 

 Hist., vol. 34, 1905, p. 31, pi. 5, fig. 4. — Sidebottom, Mem. and Proc. Man- 

 chester Lit. and Philos. Soc, vol. 53, No. 21, 1909, p. 14, pi. 4, fig. 10; pi. 5, 

 figs. 1, 2; vol. 54, No. 16, 1910, p. 29, pi. 3, fig. 16.— Bagg, Bull. U. S. Geol. 

 Surv., No. 513, p. 92, pi. 27, figs. 10-12. 



Description. — Test composed of about 10 chambers in the last 

 formed volution, in face view about 2^ times as long as wide, periphery 

 broadly rounded, usually slightly depressed at the umbilicus : periph- 

 ery slightly lobulated, chambers somewhat inflated, septal lines with 

 regular bridging: aperture a nearly semicircular, narrow opening, 

 sometimes showing traces of division into a series of openings. 



Diameter, 0.50-0.70 mm. 



Distribution. — In the North Pacific Brady records this species from 

 a single Challenger station, Honolulu coral reefs, Hawaiian Islands, 

 in 40 fathoms. Bagg records it from one Albatross station D 4174 

 in 735-865 fathoms. Rhumbler records it from Chatham Island and 

 Laysan. I have material from Hongkong; from Nero station 1311 

 in 1,503 fathoms; from off Alaska; from Albatross station 3603 in 

 1,771 fathoms in Bering Sea, abundant. It also occurred in material 

 taken from Holothurian stomachs at Albatross D 3608 in 276 fathoms 

 in Bering Sea. 



There seems to be a number of forms which are included under this 

 species and a critical study of a large amount of material would 

 doubtless show some definite forms. I have not had sufficient 

 material of this species to make any such comparisons. 



