ART. 19 FOEAMINIFERA FBOM TEl^NESSEE BEEKY AND K15LT.EY i 



NODOSARIA PROXIMA Silvestri 



Plate 1, Figure 13 



Nodosaria proxima Silvestri, Atti Accad. Gioenia, Catania, ser. 3, vol. 7, 

 1872, p. 63, pi. 6, figs. 138-147.— H. B. Brady, Rep. Voy. Challenger, Zoology, 

 vol. 9, 1884, p. 511, pi. 64, fig. 15.— Cushman, Foram. N. Pacific Ocean, U. S. 

 Nat. Mus. Bull. 71, pt. 3, 1913, p. 52. 



Test elongate, slender, composed of several spherical chambers con- 

 nected by short necks or tubes ; surface ornamented with longitudinal 

 costae extending the entire length of the test; aperture on the end of 

 the last formed neck. 



Length, 0.68 mm. 



This small species was first described by Silvestri from the Sub- 

 Pennine Clay of San Quirico near Sienna. These clays are generally 

 thought to be of Pliocene age, but it is now known that there are 

 clays in the Appennines of Cretaceous age. These Cretaceous clays 

 contain plants of Senonian age and also carry cycad stumps. It is 

 entirely possible that the clays from which Silvestri described 

 N. proxima were of Cretaceous age. 



This species is rare in the Kipley at Coon Creek, but as it is the 

 only 2-chambered species it is easily identified from any of the other 

 species. 



Plesiotype.—C2it. No. 73671, U.S.N.M. 



NODOSARIA, species 

 Plate 1, Figure 9 



Test composed of slightly inflated chambers with smooth walls. 

 These chambers are so broken as to give no clue to the conditions of 

 the rest of the test. 



This small fragment of Nodosaria is of no value in determining 

 what its affinities might be. It is of interest to note it with the hope 

 that future work will bring to light more complete specimens and so 

 lead us to the determination of its true species. 



Genus CRISTELLARIA Lamarck, 1812 



CRISTELLARIA MIDWAYENSIS Plammer 



Plate 1, Figure 3 



Cristellaria midwayensis Plitmheb, Univ. Texas Bull. 2644, 1926, p. 95, pi. 13, 

 fig. 5a-c, 1926. 



Test large, closely coiled, biconvex; peripheral margin carinate; 

 composed of numerous chambers usually 11-12 in the last formed 

 whorl of adult specimens, 9-10 in younger specimens ; sutures distinct, 

 slightly limbate and raised near the umbo ; aperture radial. 



Diameter, greater than 1 mm. 



