46 BULLETIN 161, UNITED STATES NATIONAL MUSEUM 



CHRYSAUDINELLA DIMORPHA (H. B. Brady) 



Plate 13, Figure 1 



Chrysalidina dimorpha H. B. Brady, Quart. Journ. Micr. Sci., vol. 21, p. 54, 

 1881; Rep. Voy. Challenger, Zoology, vol. 9, p. 388, pi. 46, figs. 20, 21, 1884. — 

 Egger, Abh. kon. bay. Akad. Wiss. Miinchen, CI. ii, vol. 18, p. 274, pi. 6, 

 figs. 47, 51, 52, 1893.— Chapman, Proc. Zool. Soc. London, 1895, p. 20. — 

 MiLLETT, Journ. Roy. Micr. Soc, 1900, p. 12, pi. 1, fig. 14. — Dakin, Rep. 

 Ceylon Pearl-Oyster Fish., vol. 5, p. 233, 1906.— Ctjshman, U. S. Nat. 

 Mus. Bull. 71, pt.2, p. 60, figs. 96, 97, 1911. — Heron-Allen and Earland, 

 Trans. Zool. Soc. London, vol. 20, p. 632, pi. 47, figs. 29-31, 1915. — 

 CuSHMAN, U. S. Nat. Mus. Bull. 100, vol. 4, p. 144, 1921; Bull. 104, pt. 3, 

 p. 65, pi. 19, fig. 4, 1922; Carnegie Inst. Washington Publ. 342, p. 22, 

 1924.— Hanzawa, Jap. Journ. Geol. Pal., vol. 4, p. 39 (table), 1925 (1926).— 

 CusHMAN, Contr. Cushman Lab. Foram. Res., vol. 3, pt. 1, p. 254, pi. 

 14, fig. 16, 1927; Cushman Lab. Foram. Res. Special Publ. No. 1, pi. 

 36, figs. 15, 16; pi. 37, fig. 16, 1928; Journ. Washington Acad. 

 Sci., vol. 19, p. 159, figs. 3a, b, 1929; Cushman Lab. Foram. Res. Special 

 Publ. No. 5, pi. 28, figs. 5a, 6, 1933. — Bermudez, Mem. Soc. Cubana Hist. 

 Nat., vol. 9, p. 198, 1935. — Yabe and Asano, Science Rep. Tohoku Imp. 

 Univ., ser. 2 (Geol.), vol. 19, No. I, p. 122 (36), 1937. 



Test elongate, tapering, triangular in transverse section, the sides 

 nearly equal, flat, or somewhat carinate, angles acute, early portion 

 consisting of chambers arranged triserially, the later portion with 

 chambers in a single series; sutures distinct, slightly limbate, curved, 

 not raised; wall smooth but distinctly and somewhat coarsely perfo- 

 rate; aperture in the early stages similar to that in Reussella, in the 

 adult numerous, scattered more or less irregularly over the terminal 

 face of the chamber. Length, up to 0.50 mm.; breadth, 0.25-0.35 

 mm. 



This is a widely distributed species in the Indo-Pacific, but it has 

 not occurred widely in our material. The best specimens are from 

 40-50 fathoms off Fiji. 



Subfamily Uvigerininae 



Genus UVIGERINA d'Orbigny, 1826 



Uvigerina d'Orbigny, Ann. Sci. Nat., vol. 7, p. 268, 1826. 



Genotype. — By designation, Uvigerina pigmea d'Orbigny. 



Test generally triserial, elongate, fusiform, rounded in transverse 

 section; chambers inflated, rounded; wall calcareous, perforate; 

 aperture terminal, rounded, with neck and lip, often with a spiral 

 tooth and internal twisted tube. Eocene to Recent. 



UVIGERINA AMPULLACEA H. B. Brady 



Plate 13, Figures 2-6 



Uvigerina asperula Czjzek var. ampullacea H. B. Brady, Rep. Voy. Challenger, 

 Zoology, vol. 9, p. 579, pi. 75, figs. 10, 11, 1884.^ — Sidebottom, Journ. Roy. 

 Micr. Soc, 1918, p. 146. 



