FORAMIN-IFERA OF THE ATLANTIC OCEAN g? 



Test with a globular proloculum followed by a planispiral tubula 

 second chamber, the adult chambers in a rectihnear series; aperture 

 simple, with a lip. 



Lias to Recent. 



This genus was apparently developed early in the history of the 

 family, and species and specimens are common in the Jurassic. There 

 are very few living species. 



NODOBACULARIA TIBIA (Jones and Parker) 



Plate 21, Figure 5 



Nubecularia tibia Jones and Parker, Quart. Journ. Geol. Soc, vol. 16, 1860, 

 p. 455, pi. 20, figs. 48-51.— H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 

 1879, p. 266, pi. 8, figs. 1, 2; Rep. Voy. Challenger, Zoology, vol. 9, 1884^ 

 p. 135, pi. 1, figs. 1-4.— Haeusler, Neues Jahrb., 1887, p. 192, pi. 6, figs. 

 1-6.— Woodward, The Observer, vol. 4, 1893, p. 75.— A. Silvestri, Mem. 

 Accad. Pont. Nuovi Lincei, vol. 50, 1897, p. 36.— Millett, Journ. Roy. 

 Micr. Soc, 1898, p. 261, pi. 5, fig. 3.— Chapman, Journ. Linn. Soc. Zool., 

 vol. 28, 1902, p. 398 (list). — Sidebottom, Mem. Proc. Manchester Lit. 

 Philos. Soc, vol. 48, No. 5, 1904, p. 2; vol. 54, No. 16, 1910, p. 1, pi. 1, 

 fig. 1. — Heron-Allen and Earland, Journ. Roy. Micr. Soc, 1911, p. 

 300, pi. 9, fig. 3; Trans. Zool. Soc London, vol. 20, 1915, p. 548.— Side- 

 bottom, Journ. Roy. Micr. Soc, 1918, p. 3, pi. 1, fig. 1 (?).— Heron-Allen 

 and Earland, British Antarctic Exped., Zool., vol. 6, 1922, p. 59. 



Nodobacularia tibia Rhumbler, Zool. Jahrb., Abt. Syst., vol. 24, 1906, p. 38, 

 pi. 2, fig. 13.— CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 6, 1917, p. 39, pi. 

 8, figs. 1, 2; Bull. 100, U. S. Nat. Mus., vol. 4, 1921, p. 415, pi. 85, figs. 2, 

 3; Publ. 311, Carnegie Instit. Washington, 1922, p. 59, pi. 11, fig. 1; Publ. 

 342, 1924, p. 53, pi. 19, fig. 10. 



Test composed of a globular proloculum followed, at least in the 

 megalospheric form, by a second Cornuspira-like chamber a half coil 

 in length, in turn followed by a series of two or three or more, usually 

 pyriform or subcylindrical chambers, the basal end being usually the 

 broadest, tapering gradually to the apertural end; wall smooth; aper- 

 ture simple, rounded, occasionally with a somewhat thickened lip. 



Length usually less than 1 mm.; but Heron- Allen and Earland 

 mention specimens 4 or 5 mm. in length. They are attached forms 

 and may not be the same species. 



For the Atlantic, there are few records. Brady gives a Challenger 

 station off Culebra Island, West Indies, 390 fathoms and I have had 

 it from the Tortugas region where it is rare. Heron-Allen and 

 Earland record it from Selsey Bill on the southern coast of England 

 and note its occurrence from Moray Firth, Scotland in 43 fathoms. 



It seems to be more common in the Indo-Pacific in warm, shallow 

 water. 



Genus CORNUSPIRAMIA Cushman, 1928 



Cornuspiramia Cushman (Genoholotype, Nubecularia antillarum Cushman), 

 Contr. Cushman Lab. Foram. Res., vol. 4, 1928, p. 4; Special Publ. No. 

 1, Cushman Lab. Foram. Res., 1928, p. 164. 



