256 CRETACEOUS PALEONTOLOGY. 



1905. Globigerina cretacea Bagg, Bull. U. S. G. S., No. 268, p. 

 42, pi. 8, fig. i. 



Description. "Test rotaliform, but strongly depressed ; 

 superior surface flattened or but slightly convex, inferior side 

 depressed toward the center and excavated at the umbilicus ; 

 periphery obtuse and lobulated ; shell typically composed of three 

 fairly distinct convolutions, the outermost consisting of from five 

 to seven segments, the latter relatively small, subglobular ; aper- 

 ture opening into the umbilical vestibule. 



"Diameter, less than I mm." (Bagg.) 



Formation and locality. Navesink marl, Freehold (Bagg) ; 

 Vincentown limesand, Quinton, Vincentown, Mullica Hill, Tim- 

 ber Creek, etc. (Bagg). 



Geographic distribution. New Jersey; Miocene of Maryland 

 and California. 



Family BOTALIDAE. 

 Sub-family ROTALINAE. 



Genus DISCORBINA Parker and Jones. 



Discorbina bertheloti (d'Orbigny). 

 Plate IV., Figs. 1-3. 



1839. Rosalina bertheloti d'Orbigny, Foram. Canar., vol. ii, pt. 



2, p. 135, pi. i, figs. 2&-30. 

 1884. Discorbina bertheloii, Brady, Chal. Kept., vol. ix, p. 650, 



pi. Ixxxix, figs. 10-12. 

 1898. Discorbina bertheloti Bagg, Bull. U. S. G. S., No. 88, p. 



64. 

 1898. Discorbina bertheloti, Bagg, Bull. Am. Pal., vol. 2, No. 



10, p. 34 (328). 

 1901. Discorbina bertheloti Bagg, Md. Geol. Surv., Eocene, p. 



251, pi. 64, fig. i. 



Description. "Test very strongly compressed, carinate, per- 

 forate; spiral side approximately flat, reverse side low, convex; 

 chambers depressed, numerous, convex, with limbate margins. 



