106 BULLETIN 104, UNITED STATES NATIONAL MUSEUM 



ANOMAUNA SEMIPUNCTATA (Bailey) 



Plate 18, figures 1, 2 



Rotalina semipundata Bailey, Smithsonian Contrib., vol. 2, art. 3, 1851, p. 

 11, pi., figs. 17-19. 



Anomalina pobjmorpha Costa, Atti dell' Accad. Pont., vol. 7, 1856, p. 252,, 

 pi. 21, figs. 7-9.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884 

 p. 676, pi. 97, figs. 3-7. — Howchin, Trans. Proc. Roy. Soc. So. Australia 

 vol. 12, 1889, p. 13.— Woodward, The Observer, vol. 4, 1893, p. 177.— 

 Egger, Abhandl. kon. bay. Akad. Wiss. Miinchen, CI. II, vol. 18, 1893 

 p. 380, pi. 14, figs. 27, 28, 32-34.— Amicis, Nat. Sicil., Ann. XIV, 1895, p 

 119. — Chapman, Proc. Zool. Soc. London, 1895, p. 41. — Flint, Ann 

 Rep't. U. S. Nat. Mus., 1897 (1899), p. 336, pi. 79, fig. 3.— Chapman 

 Trans. New Zealand Instit., vol. 38, 1905 (1906), p. 104; Journ. Quekett 

 Micr. Club, ser. 2, vol. 10, 1907, p. 138.— Bagg, Proc. U. S. Nat. Mus. 

 vol. 34, 1908, p. 160. — Chapman, Journ. Linn. Soc. Zool., vol. 30, 1910, p 

 421. — Schubert, Abhandl. k. k. geol. Reichsanst, vol. 20, pt. 4, 1911, p 

 107, fig. 15 (in text). — Pearcey, Trans. Roy. Soc. Edinburgh, vol. 49, 1914 

 p. 1028. — Chapman, Biol. Res. Endeavour, vol. 3, pt. 1, 1915, p. 31.— 

 Heron-Allen and Earland, Trans. Zool. Soc. London, vol. 20, 1915, p 

 712, pi. 53, figs. 2-5.— Cushman, Bull. 71, U. S. Nat. Mus., pt. 5, 1915, p 

 47, pi. 19, figs. 3, 4. — Chapman, Rep't. British Antarctic Exped., Geol. 

 vol. 2, 1916 (1917), p. 70.— Sidebottom, Journ. Roy. Micr. Soc, 1918, p 

 258.— Cushman, Bull. 100, U. S. Nat. Mus., vol. 4, 1921, p. 324, pi. 61 

 figs. 3a, b. — Heron-Allen and Earland, Rep't. British Antarctic Exped. 

 Zool., vol. 6, 1922, p. 212. — Hanzawa, Jap. Journ. Geol. Pal., vol. 4, 1925 

 (1926), p. 43. — Yabe and Hanzawa, Jap. Journ. Geol. Pal., vol. 4, 1925' 

 (1926), p. 52.— Koch, Ber. Schweiz. Pal. Ges., vol. 19, No. 3, 1926, p. 747- 



Test nautiloid, nearly equally biconvex, ventral side concave, dorsal 

 convex; umbilical region on ventral side depressed; seven to eight cham- 

 bers in the final coil, in face view broad; periphery broad, angled, some 

 of the chambers with a single large tooth-like projection at the 

 periphery; wall coarsely perforate; aperture an elongated arched slit 

 at the base of the chamber. 



Diameter up to 1.5 mm. 



Brady gives three stations for this species in the North Atlantic:: 

 "Off Bermuda, 435 fathoms; off Sombrero Island, 450 fathoms; and 

 off Culebra Island, 390 fathoms." It occurs in considerable numbers- 

 in the Albatross dredgings off the coast of Georgia. 



In the Philippines there are some very peculiar varieties of this, 

 species, but the Atlantic specimens are fairly simple. 



This species was first described and figured by J. W. Bailey from off 

 the eastern coast of the United States in 1851. Specimens from along 

 our coast in the Albatross dredgings are often of just the shape and 

 character given by Bailey. The ventral side is concave and smooth 

 in the adult, while the dorsal side is very coarsely perforate. 



Brady in the Challenger Report puts Bailey's species as a synonym, 

 of " Truncatulina ungeriana d'Orbigny," but it is not Brady's species 

 which again is not that of d'Orbigny as noted under Cibicides. The; 



