FORAMINIFERA OF THE NORTH PACIFIC OCEAN. 71 



ROTALIA SOLDANII d'Orbigny. 

 Plate 29, fig. 1; plate 31, fig. 4. 



Rotalia (Gyroidina) soldanii d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 278, 

 No. 5; Modeles, No. 36. 



Rotalia soldanii Hantken, Mitth. Jabrb. ung. geol. Anstalt., 1875, p. 80, pi. 9, 

 figs. la-c. — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 

 706, pi. 107, figs. 6, 7.— Terrigi, Mem. Com. Geol. Italia, vol.4, 1891, p. 109, 

 pi. 4, fig. 15. — Silvestri, Mem. Pont. Accad. Nuovi Lincei, vol. 6, 1899, 

 p. 328, pi. 6, fig. 14.— Flint, Rep. IT. S. Nat. Mus., 1897 (1899), p. 332, pi. 75, 

 fig. 4. — Millett, Journ. Roy. Micr. Soc, 1904, p. 503. — Chapman, Trans. 

 New Zealand Inst., vol. 38, 1905 (1906), p. 106; Journ. Quekett Micr. Club, 

 ser. 2, vol. 10, 1907, p. 140— Bagg, Proc. U. S. Nat. Mus., vol. 34, 1908, 

 p. 163. 



Rotalia beccarii, var. soldani Parker and Jones, Philos. Trans., vol. 155, 1865, 

 p. 389, pi. 16, figs. 31-33. 



Rotalia soldanii Egger, Abh. kon. bay. Akad. Wiss. Muncben, CI. n, vol. 18, 

 1893, p. 420, pi. 19, figs. 16-18, 51.— Goes, Kongl. Svensk. Vet, Akad. 

 Handl., vol. 25, No. 9, 1894, p. 99, pi. 16, fig. 812. 



Description. — Test plano-convex, dorsal side flat or even slightly 

 depressed, especially near the peripheral margin, ventral side very 

 convex; chambers numerous, distinct; the sutures but slightly 

 depressed; wall smooth, thick, finely perforate; umbilicus deeply 

 excavated; aperture an elongate slit at the inner margin of the 

 chamber. 



Diameter about 1 mm. 



Distribution. — This is a rather widely distributed species in the 

 North Pacific. Brady records it from two Challenger stations 214 and 

 224 in 500 and 1,850 fathoms respectively. Goes records it from 

 Albatross station D3433 in 1,218 fathoms. Flint records it from Alba- 

 tross station D3080 in 93 fathoms off the coast of Oregon and Bagg 

 had it from three Albatross stations off the Hawaiian Islands, H4508, 

 H4555, and H4585 in 495, 1,398 and 689 fathoms, respectively. I 

 have had material from about the Hawaiian Islands, off the Galapagos 

 Islands, at numerous Nero stations between Guam and Japan and also 

 at Albatross stations off Japan. The deepest station is 2,048 fathoms 

 and the shallowest 244 fathoms. 



Genus CALCARINA d'Orbigny, 1826. 



Nautilics (part) Linnaeus, Syst. Nat., ed. 13 (Gmelin's), 1788, p. 3371. 

 Calcarina d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 276 (type, Nautilus speng- 

 leri (Linnseus) ). 



Description. — Test composed of numerous chambers, close coiled, 

 biconvex; periphery usually with radiating spines; chambers visible 

 at least on the ventral side, sometimes on the dorsal side as well; 

 aperture typically consisting of a row of small openings along the 

 inner margin of the apertural face; supplemental skeleton and 

 canal system highly developed. 



70175°— Bull. 71, pt. 5—15 6 



