FORAMINIFERA. 217 



"ber, not constricted in the lower portion of the shell, but becoming 

 distinct and more constricted as they approach the proximal end ; 

 ultimate segment prolonged, provided with a constricted tube- 

 like neck which carries the round aperture. 



"Length, 2-3 mm." (Bagg.) 



Formation and locality. — Manasquan marl, Vincentown 

 <Bagg). 



Geographic distribution. — New Jersey ; Miocene of California. 



Nodosaria polygona Reuss. 



Plate II., Pigs. 9-1 1. 



1855. Nodosaria polygona Reuss, Zeits. Deutsch. Geol. Gesell., 



p. 265, pi. viii, figs. 7, 8. 

 1898. Nodosaria polygona Bagg, Bull. U. S. G. S., No. 88, p. 42. 



Description. — "Test cylindrical, elongate, costate, tapering very 

 gradually, straight or but slightly curved; chambers numerous, 

 ten to sixteen, becoming more constricted and globose toward the 

 ultimate segment; primordial chamber larger than the one suc- 

 ceeding, bulbous, mucronate; ultimate chamber terminates in a 

 short tubular neck, in which the round oral aperture is situated; 

 longitudinal costas few in number, eight to ten, very distinct, and 

 elevated and extending from end to end. 



"Length, sometimes 9 mm." (Bagg.) 



Remarks, — ^"The specimens from the Marshalltown marl beds 

 are small (i.i mm. in length), and have only six chambers, and 

 are rare, while the Vincentown limesand forms are very numerous 

 and are among the largest of the Nodosarias from New Jersey." 

 (Bagg.) 



Formation and locality. — Marshalltown clay-marl, Marshall- 

 town (Bagg) ; Navesink marl, Freehold (Bagg) ; Hornerstown 

 marl, Blue Ball (Bagg) ; Vincentown limesand, New Egypt, 

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



Geographic distribution. — New Jersey. 



