26 BULXiETIN 104, U]S[ITED STATES NATIONAL. MUSEUM. 



Such a striking species would unlikely be overlooked elsewhere and 

 may rank with Botellina lahyrinthica, TecTinitella thomq)soni, Psammo- 

 sphaera rustica, and others as species which so far as we have data 

 are confined to this general region. 



Its nearly related form seems to be R. cylindricus. 



Genus HORMOSINA H. B. Brady, 1879. 



Hormosina H. B. Brady (t\-pe, H. globuli/era H. B. Brady), Quart. Journ. Micr, 

 Sci., vol. 19, 1879, p. 56. — Butschli, in Bronn, Klassen und Ordnungen des 

 Thierreichs, vol. 1, 1880, p. 199.— H. B. Brady, Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 325.— Chapman, The Foraminifera, 1902, p. 149.— 

 CusHMAN, Bull. 71, U. S. Nat. Mas., pt. 1, 1910, p. 93. 



Description. — Test free, composed of a linear series of subglobular, 

 fusiform, or pyriforra chambers joined end to end in a single monili- 

 form series, straight, somewhat curved or irregular; walls usually 

 thin, finely arenaceous with an excess of cement, chambers undivided; 

 aperture a single circular opening usually at the dorsal end of the 

 last-formed chamber, often with a neck, but occasionally at the side 

 of the chamber; color yellowish or reddish brown. 



This genus difl'ers from BeopJiax mainly in its finer texture, smooth 

 surface and reddish brown or yellowish color, all due to the excessive 

 amount of cement and fine particles of which the test is composed. 



As a rule the genus seems to be characteristic of rather deep water. 



HORMOSINA GLOBULIFERA H. B. Brady. 



Plate 6, fig. 1. 



Hormosina globuli/era II. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, p. 60, 

 pi. 4, figs. 4, 5. — W. B. Carpenter, The Microscope, 6th ed., 1881, p. 563, 

 fig. 320c (in text). — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884, p. 326, pi. 39, figs. 1-6.— De Folin, Le Naturaliste, vol. 10, 1888, p. 87, 

 figs. 1, 2. — J. Wright, Proc. Roy. Irish Acad., vol. 1, 1891, p. 468. — Chapman, 

 Journ. Roy. Micr. Soc, 1892, p. 326, pi. 6, figs. 10a, 6.— Goiss, Kongl. Svensk. 

 Vet. Akad. Handl., vol. 25, No. 9, 1894, p. 29, pi. 6, figs. 218, 219.— Chapman, 

 Proc. Zool. Soc. London, 1895, p. 17.— Goes, Bull. Mus. Comp..Zool., vol. 29, 

 1896, p. 34.— Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 280, pi. 24, fig. 4. — 

 CusHMAN, Bull. 71, U. S. Nat. Mus.,pt. 1, 1910,p.93, figs. 136-137.— Pearcey, 

 Trans. Roy. Soc. Edinburgh, vol. 49, 1914, p. 1007. — Heron-Allen and 

 Earland, Trans. Zool. Soc. London, vol. 20, 1915, p. 617, pi. 46, fig. 25. 



Description. — Test typically composed of a few nearly spherical 

 chambers, each much larger than its predecessor and slightly 

 embracing it proximally, sutures very distinct, chambers in a simple 

 straight or slightly curved line; wall composed of fine arenaceous 

 material with an excess of reddish or yellowish brown cement, surface 

 smootlily finished both within and without, comparatively thin; 

 aperture small, circular, at the end of a short tubular neck. 



Length up to nearly 5 mm. 



Distrihution. — From all the available specimens and records this 

 is a widely distributed species but occurs most abundantly, as far as 



