260 CRETACEOUS PALEONTOLOGY. 



ferior (vaulted) surface; peripheral margin sharp; aperture an 

 inframarginal opening near the base of the ultimate segment. 



"Diameter, 0.5 mm." (Bagg.) 



Remarks. "There is a possibility that this is an Eocene fossil, 

 as it was obtained from some of the uppermost greensand of the 

 New Jersey Cretaceous, which carries a number of Eocene fossils, 

 together with some of late Cretaceous age. The specimens came 

 from the upper marl bed at Vincentown, and only a very few 

 forms were found." (Bagg.) 



Formation and locality. Manasquan marl ?, Vincentowrt 

 (Bagg). 



Geographic distribution. New Jersey. 



Truncatulina ungeriana (d'Orbigny). 

 Plate IV., Figs. 16-18. 



1846. Rotalina ungeriana, d'Orbigny, Foram. Foss. Bassin tert. 



Vienne, p. 157, pi. viii, figs. 16-18. 

 1884. Truncatulina ungeriana, Brady, Chal. Kept., vol. ix, p. 



664, pi. xciv, fig. 9, a-d. 

 1898. Truncatulina ungeriana Bagg, Bull. U. S. G. S., No. 88,. 



p. 66. 

 1901. Truncatulina ungeriana Bagg, Md. Geol. Surv., Eocene,. 



p. 253, pi. 64, fig. 4. 



Description. "Test large, rotaliform, circular, coarsely porous, 

 both sides moderately convex, unequal, depressed slightly on the 

 inferior side at the umbilicus, consisting of three convolutions. 

 The last volution consists of from 10 to 12 limbate chambers. 

 Septa arched ; aperture a median semilunar slit. ' 



"Diameter, 0.78 mm." (Bagg.) 



Remarks. "This species is rather common at New Egypt. In 

 the upper marl bed the forms are much smaller, the shell being 

 only about one-half the size of the New Egypt specimens." 

 (Bagg.) 



Formation and locality. Vmcentown limesand, New Egypt 

 (Bagg) ; Manasquan marl, Vincentown (Bagg). 



Geographic distribution. New Jersey ; Eocene of Maryland. 



