60 BULLETIN" 10 4, UNITED STATES NATIONAL MUSEUM 



Miliolina rotunda Millett, Journ. Roy. Micr. Soc, 1898, p. 267, pi. 5, figs. 

 15, 16. — SiDEBOTTOM, Manchester Lit. Philos. Soc, vol. 48, No. 5, 1904, 

 p. 8. 



Test somewhat longer than wide; chambers rotund; periphery 

 broadly rounded; surface of the test made up largely or entirely of 

 the two last-formed chambers; sutures very slightly depressed ; aper- 

 tural end somewhat contracted, with a slightly thickened lip; aperture 

 rounded, with a single bifid tooth, projecting somewhat above the 

 outline of the aperture; surface of the test smooth and shining, often 

 with transverse wrinkles. 



Length, 0.80 mm.; breadth, 0.60 mm.; thickness, 0.50 mm. 



There are in the collections from the Tortugas specimens which 

 may be referred to this species. This is one of the smooth, somewhat 

 generalized forms to which many things have been referred. The 

 figures are of a Tortugas specimen. 



TRILOCULINA BUCCULENTA ^H. B. Brady) 



Plate 15, Figures 1 a-c 



Miliolina bucculenta H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884, p. 170, pi. 114, figs. 3 a, b.—Goits, Kongl. Svensk. Vet. Akad. Handl., 

 vol. 25, No. 9, 1894, p. 118, pi. 23, figs. 890-903; pi. 24, figs. 904, 905.— 

 Flint, Ann. Rep. U. S. Nat. Mus., 1897 (1899), p. 299, pi. 45, fig. 1.— 

 Pearcey, Trans. Roy. Soc. Edinburgh, vol. 49, 1914, p. 995. — Heron- 

 Allen and Earland, Trans. Linn. Soc. London, ser. 2, vol. 11, 1916, 

 p. 208, pi. 39, figs. 4-6. 



"Test subglobular, more or less compressed, the two sides nearly 

 symmetrical, margin lobulated; segments inflated, broad and embrac- 

 ing, the last three forming a single convolution, which completely 

 encloses the preceding ones. Aperture a long, irregularly arched, 

 transverse slit, on the face of the terminal segment, near the Une of 

 union with the previous convolution. Diameter one-twelfth of 1 

 inch (2 mm.)." 



The above description is the original of Brady. The species is 

 apparently characteristic of cold waters of the North Atlantic and 

 Arctic although it has been recorded elsewhere but not usually in its 

 typical form. The figures are after Heron- Allen and Earland from 

 specimens off the west coast of Scotland. 



Brady describes variety placentiformis from off the West Indies in 

 390 fathoms. This seems to be a very irregular form and needs 

 further study. 



TRILOCULINA LABIOSA d'Orbigny 



Plate 15, Figures 2, 3 



Triloculina lahiosa d'Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 

 1839, "Foraminiferes," p. 157, pi. 10, figs. 12-14.— Cushman, Bull. 71, 

 U. S. Nat. Mus., pt. 6, 1917, p. 70; Proc. U. S. Nat. Mus., vol. 59, 1921, 

 p. 70, pi. 16, figs. 13, 14; Publ. 311, Carnegie Instit. Washington, 1922, 

 p. 77, pi. 12, fig. 1; Publ. 344, 1926, p. 83. 



