34 PEOCEEDINGS OF THE NATIONAL MUSEUM vol.80 



may not represent a single species, but they are characterized by the 

 subglobular chambers and the numerous costae, which are continuous 

 from one chamber to another. 



NODOSARIA AFFINIS Reuss 



Plate 10, Figure 13 



Nodosaria affinis Reuss, Verstein. Bohm. Kreide, pt. 1, p. 26, pi. 13, fig. 16, 

 1845-46; in Geinitz, Palaeontogi'aphica, vol. 20, pt. 2, p. 83, pi. 20, fig. 12, 

 1874. — Fbanke, Abli. geol. pal. Inst. Uuiv. Greifswald, vol. 6, p. 37, pi. 3, 

 fig. 25, 1925.— Beery and Ketj.ey, Proc. U. S. Nat. Mus., vol. 76, art. 19, 

 p. 6, pi. 1, fig. 8, 1929. 



Nodomria proxima Beery and Kelley (not Silvestri), Proc. U. S. Nat. Mus., 

 vol. 76, art. 19, p. 7, pi. 1, fig. 13, 1929. 



Test elongate, of variable shape in the microspheric and megalo- 

 spheric forms, the former with many chambers and tapering, the 

 greatest width near the apertural end, the latter with the chambers 

 of nearly uniform diameter throughout ; chambers distinct, inflated, 

 especially toward the apertural end, initial end usually with a stout 

 spine; sutures distinct, depressed, often somewhat limbate; wall 

 ornamented by numerous (usually 13 to 15) longitudinal costae, 

 continuous over the adjacent chambers, usually sharp and platelike; 

 aperture radiate, terminal, with a slight projection of the apertural 

 face. Length, up to 2 mm. or more; diameter, normally about 0.3 

 mm., but in extreme megalospheric forms may be as much as 0.75 mm. 



This species, described from the Upper Cretaceous of Europe, is 

 very common indeed in the Upper Cretaceous of the Gulf Coastal 

 Plain of the United States, and apparently our specimen figured here, 

 although incomplete, probably belongs in the same species. There 

 is a great degree of variation in the relative size and number of cham- 

 bers in the material from the Gulf Coastal Plain, although the orna- 

 mentation remains fairly constant. 



NODOSARIA cf. MARCKI Reuss 



Plate 10, Figube 12 



Nodosaria cf. marcki Cushman and Jarvis, Contr. Cushinan Lab. Foram. Res., 

 vol. 4, p. 97, pi. 14, fig. 4, 1928. 



The specimen figured is the same as that given in the above refer- 

 ence. It is very close to a figure given by Franke from the Creta- 

 ceous of Germany. ^° Very similar specimens occur also in the Ve- 

 lasco shale of Mexico. 



i»Abh. geol. pal. Inst. Univ. Greifswald, vol. 6, pi. .", fig. 22 a, 1925. 



