64 BULLETIN 10 4, UNITED STATES NATIONAL MUSEUM 



Diameter, 0.60 mm.; thickness, 0.45 mm. 



D'Orbigny described this species from shore sands of Cuba and 

 Jamaica. I have had specimens from the north coast of Jamaica, 

 from Porto Rico, and from the Tortugas region. 



The figures referred to this species given by Brady in the Challenger 

 report do not correspond well with those given by d'Orbigny. The 

 West Indian material fits much more closely. As many later records 

 for this species are undoubtedly based upon the figures in the Challen- 

 ger report, it is difficult to know the real distribution of the species 

 outside of the West Indian region. 



TRILOCULINA QUADRILATERALIS d'Orbigny 



Triloculina quadr Hater alis d'Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. 

 Cuba, 1839, "Foraminiferes," p. 173, pi. 9, figs. 14-16.— Cushman, Proc. 

 U.S.Nat. Mus., vol. 59, 1921, p. 71, text fig. 11; Publ. 311, Carnegie 

 Instit. Washington, 1922, p. 76. 



Test somewhat longer than broad, in the adult the exterior composed 

 of three chambers, generally quadrangular in outline, the periphery 

 slightly convex, but the angles acute and projecting, sides concave; 

 wall with numerous fine, incised short lines; aperture oblong, with a 

 single elongate tooth, projecting slightly above the outline of the 

 aperture. 



Length, 0.65 mm.; breadth, 0.35 mm.; thickness, 0.30 mm. 



This species was described by d'Orbigny from shore sands of Cuba. 

 It is a widely distributed and common species in the West Indian 

 region. I have had it from the north coast of Jamaica and from 

 numerous stations off the coast of Florida. The young does not 

 develop the full characters but the adult has the very square cham- 

 bers with the angles sharp or carinate. The apertural neck is distinctly 

 developed in the adult and there is a well-developed lip. 



TRILOCULINA INSIGNIS (H. B. Brady) 



Plate 17, Figures 2 a,b 



Miliolina insignis H. B. Bkady, Rep. Voy. Challenger^ Zoology, vol. 9, 1884^ 

 p. 165, pi. 4, figs. 8, 10. — J. Wright, Proc. Belfast Nat. Field Club, Appendix, 

 1885-86, p. 319, pi. 26, figs. 4 o, h. — Howchin. Trans. Proc. Roy. Soc. So- 

 Australia, vol. 12, 1889, p. 3.— Woodward, The Observer, vol. 4, 1893, 

 p. 76. — Chapman, Proc. Zool. Soc. London, 1895, p. 9. — Goits, Bull. Mus. 

 Comp. Zool., vol. 29, 1896, p. 86.— Flint, Ann. Rep't. U. S. Nat. Mus.^ 

 1897 (1899), p. 299, pi. 45, fig. 2.— J. Wright, Ann. Mag. Nat. Hist., ser, 

 6, vol. 4, 1900, p. 52. — Earland, Journ. Quekett Micr. Club, ser. 2, vol. 

 9, 1905, p. 196.— Chapman, Trans. New Zealand Inst., vol.38, 1905 (1906), 

 p.81.— Dakin, Rep't. Ceylon Pearl Oyster Fish., vol. 6, 1906, p. 228.— 

 Chapman, Subantarctic Islands of New Zealand, 1909, p. 318. — Heron- 

 Allen and Earland, Journ. Roy. Micr. Soc, 1911, p. 303. — Chapman, 

 Biol. Res. Endeavour, vol. 3, pt. 1, 1915, p. 8. — Heron-Allen and Earland, 

 Trans. Zool. Soc. London, vol. 20, 1915, p. 562; British Antarctic Exped., 

 Zool., vol. 6, 1922, p. 65. 



Triloculina insignis Cushman, Bull. 71, U. S. Nat. Mus., pt. 6, 1917, p. 72, 

 pi. 27, figs. 3 a, h; Bull. 100, U. S. Nat. Mus., vol. 4, 1921, p. 458. 



