ABT. 14 FOEAMINIFEEA FROM TEINIDAD CUSHMAN AND JAKVIS 45 



base of the last-formed chamber, very large, arched. Length, 0.65-1 ; 

 diameter, 0.25-0.45 mm. 



This species is now Imown from the Velasco shale of Mexico, from 

 which it was originally described, from the Upper Cretaceoiis of 

 Trinidad, and from the Gulf Coastal Plain of the United States. 



Genus ELLIPSOPLEUROSTOMELLA A. Silvestri, 1903 



ELLIPSOPLEUROSTOMELLA CURTA Cushman 



Plate 13, Figures 9, 10 



EUipsopleurGStomella ciirta Cushman, Bull. Amer. Assoc. Petr. Geol., vol. 10, 

 p. 590, pi. 16, figs. 6 a, b, 1926. — Cushman and Jarvis, Contr. Cushman Lab. 

 Foram. Res., vol. 4, p. 102, pi. 14, figs. 18, 19, 1928. 



The somewhat irregular specimens shown are possibly both forms 

 of this species, but one of them has developed a chamber with a ter- 

 minal aperture, and it may belong elsewhere. 



Genus ELLIPSONODOSARIA A. Silvestri, 1900 



ELLIPSONODOSARIA SUBNODOSA (Guppy) 



Plate 13, Figures 11-13 



ElUpsoidina subnodosa Guppy, Proc. Zool. Soc. Londou, 1S94, p. 650, pi. 42, 



fig-. 12. 

 Etlipsonodosaria siibnodosa Nuttall, Quart. Journ. Geol. Soe., vol. 84, p. 95, 



pi. 6, fig. 20, 192S. — Cushman and Jarvis, Contr. Cushman Lab. Foram. 



Res., vol. 4, p. 102, pi. 14, figs. 15, 16, 1928. 



The two forms given may represent the microspheric and megalo- 

 spheric forms of the same species. The adult chambers are very simi- 

 lar in all the specimens. 



Genus ELLIPSOGLANDULINA A. Silvestri, 1900 



ELLIPSOGLANDULINA EXPONENS (H. B. Brady) 



Plate 13, Figures 14-16 



ElUpsoidina exponens H. B. Brady, in Jukes-Brown and Harrison, Quart. 



Journ. Geol. Soc, vol. 48, p. 198, 1892. — Guppy, Proc. Zool. Soc. London, 



1894, p. 650, pi. 41, fig. 13. 

 EUipsofflanduUna exponens A. Silvestri, Atti Pont. Accad. N. Lincei, vol. 54, 



pp. 103-109, 1901.— Nuttall, Quart. Journ. Geol. Soc, vol. 84, p. 95, pi. 6, 



fig. 17, 1928. — Cushman and Jarvis, Contr. Cushman Lab. Foram. Res^ 



vol. 4, p. 103, pi. 14, fig. 17, 1928. 



The various specimens given may represent forms of a single 

 species. Some of them are evidently megalospheric, while othera 

 represent the microspheric form. 



