ART. 19 FORAMINIFERA FROM TENNESSEE BERRY AND KELLEY 15 



Genus ROTALINA Lamarck, 1804 



ROTALIA BECCARII Linnaeus, var. RIPLEYENSIS W. Berry, new variety 



Plate 3, Figures 10, 11, 12 



Test round, biconvex, dorsal side lower than ventral, periphery 

 broadly rounded; chambers numerous 11-12 in the last-formed coil, 

 later ones slightly inflate; sutures on the dorsal side slightly curved, 

 later ones strongly depressed, early ones indistinct, on ventral surface 

 indistinct, level; umbilicus open, small ; wall smooth, finely punctate; 

 aperture a narrow, elongate slit at the ventral margin of the last 

 chamber and extending to the umbilicus. 



Diameter, 0.45 mm. 



This variety differs from the parent species in the amount of 

 convexity, it being less convex. It also differs in having a deeper 

 umbilicus. The parent species is common in the Tertiary and is of 

 wide geographic distribution. This variety is fairly common in the 

 Kipley and is very characteristic. 



Holotype.— Cat. No. 73691, U.S.N.M. 



ROTALIA, species 



Test round, biconvex, dorsal side low, ventral face highly convex, 

 periphery rounded, slightly lobate in the later stages, chambers 

 numerous, 8-9 in the last whorl; sutures slightly depressed, early 

 ones filled with clear shell-like material, umbilicus small; wall 

 smooth, finely punctate ; aperture destroyed. 



This fragment seems to be closest to B. soldanii d'Orbigny, but 

 there is so little left that correct determination is impossible. 



Family MILIOLIDAE 



Genus CORNUSPIRA Schultze, 1854 



CORNUSPIRA INVOLVENS Reuss 



Plate 1, Figure 6 



OpercuUna involvens Reuss, Denkschr. Akad. Wiss. Wien, vol. 1, 1849, p. 370, 



pi. 45, fig. 20. 

 Cornuspira involvens Reuss, Sitz. Akad. Wiss. Wien. vol. 48, 1863 (1864), p. 



39, pi. 1, fig. 2. — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 



200, pi. 11, figs. 1-3.— J. A. CusHMAN, Form. North Pacific Ocean, U. S. 



Nat. Mus. Bull. 71, pt. 6, 1917, p. 25, pi. 1, fig. 2 ; pi. 2, fig. 2. 



Test biconvex, consisting of a long coiled tubular chamber gradu- 

 ally increasing in diameter ; wall smooth ; the lines between the vari- 

 ous coils usually more or less obliterated by shell material. Aperture 

 simply the end of the tube. 



Diameter, about 1.24 mm. 



