20 BULLETIN 161, UNITED STATES NATIONAL IVIUSEUM 



BOUVINA TORTUOSA H. B. Brady 



Plate 7, Figure 1 



Bolivina tortuosa H. B. Brady, Quart. Joiirn. Micr. Soc, vol. 21, p. 57, 1881; Rep. 

 Voy. Challenger, Zoology, vol. 9, p. 420, pi. 52, figs. 31, 32 (not 33. 34), 1884.— 

 Egger, Abh. kon. bay. Akad. Wiss. Munchen, CI. n, vol. 18, p. 298, pi. 8, 

 figs. 43, 44 (part), 1893. — Millett, Journ. Roy. Micr. Soc, 1900, p. 543. — 

 Chapman, Journ. Linn. Soc. Zool., vol. 28, p. 187, 1900; p. 382, 1902.— Side- 

 bottom, Journ. Roy. Micr. Soc, 1918, p. 127. — Cushman, Carnegie Inst. 

 Washington Publ. 342, p. 18, pi. 5, figs. 4, 5, 1924. — Heron-Allen and Ear- 

 land, Journ. Roy. Micr. Soc, 1924, p. 145; Journ. Linn. Soc. Zool., vol. 35, 

 p. 621, 1924. — Yabe and Hanzawa, Jap. Journ. Geol. Pal., vol. 4, p. 50, 1925 

 (1926).— Hanzawa, Jap. Journ. Geol. Pal., vol. 4, p. 40 (table), 1925 (1926).— 

 Macfadten, Geol. Survey Egypt, p. 57, 1930 (1931). — Cushman and 

 Parker, Proc U. S. Nat. Mus., vol. 80, art. 3, p. 16, pi. 3, figs. 22a, b, 1931.— 

 Bermudez, Mem. Soc. Cubana Hist. Nat., vol. 9, p. 195, 1935. 



Test short and broad, slightly longer than broad, much compressed, 

 periphery acute but not carinate, early portion with the axis much 

 twisted; chambers few, distinct, comparatively high, periphery not 

 lobulate; sutures distinct, not depressed; wall with numerous coarse 

 punctae; aperture tending to become terminal, elongate, elliptical. 

 Length, up to 0.35 mm.; breadth, up to 0.35 mm. 



This species is one of the characteristic ones of the Indo-Pacific 

 region, although there are records for it in the Atlantic. Some of the 

 colder-water records for this species are evidently not the same, as the 

 name has been applied to various species of Bolivina that have the 

 same twisted test. B. tortuosa as developed in the Indo-Pacific region 

 and found rarely in the Tropics elsewhere is a very distinctive and 

 easily distinguished form. In our Pacific collections it has occurred at 

 numerous Albatross stations, as will be seen from table 8, and often in 

 considerable numbers. It is, however, most abundant in the shallow- 

 water collections, occurring about the Fiji Islands in 40-50 fathoms; 

 off Nairai, 12 fathoms; off Levuka, 12 fathoms; Viva Anchorage, 3 

 fathoms; and Mokaujar Anchorage. In other collections it hasoccurred 

 at Vavau Anchorage, Tonga Islands, 18 fathoms: Rangiroa; Makemo 

 Lagoon, Paumotu Islands; inside the lagoon at Pinaki Atoll, Paumotu 

 Islands; Rongelap Atoll, Marshall Islands; and Port Lotten, Kersail, 

 Caroline Islands. 



BOLIVINA COMPACTA Sidebottom 



Plate 7, Figures 2, 3 



Bolivina robusta H. B. Brady var. compacta Sidebottom, Mem. Proc. Man- 

 chester Lit. Philos. Soc, vol. 49, No. 5, p. 15, pi. 3, fig. 7, 1905. 



Bolivina compacta Cushman, U. S. Nat. Mus. Bull. 71, pt. 2, p. 36, fig. 58, 1911; 

 Bull. 100, vol. 4, p. 137, pi. 26, fig. 7, 1921; Carnegie Inst. Washington Publ. 

 311, p. 26, pi. 1, fig. 10, 1922; U. S. Nat. Mus. Bull. 104, pt. 3, p. 45, 1922; 

 Carnegie Inst. Washington Publ. 342, p. 18, pi. 5, fig. 1, 1924.— Heron- 



