I90 CRETACEOUS PALEONTOLOGY. 



angular outline in transverse section; chambers variable in size; 

 ultimate chamber largest and very slightly elevated in the central 

 portion; septal lines straight, marked by definite deep constric- 

 tions; aperture a large elongated oval opening, situated toward 

 the outside edge of the ultimate chamber and nearer the convex 

 side. 



"Length, i mm.; breadth, 0.43 mm." (Bagg.) 

 Formation and locality. — Hornerstown marl. Blue Ball 

 (Bagg). 

 Geographic distribution. — New Jersey. 



Haplophragmium irregulare (Roemer). 



1840. Spirolina irregularis Roemer, Verstein. norddeutsch. 



Kreide, p. 98, pi. xv, fig. 29. 

 i860. Haplophragmium irregulare Reuss, Sitz. Akad. Wiss. 



Wien., vol. xl, p. 219, pi. x, fig. 9; pi. xi, fig. i. 

 1898. Haplophragmium irregulare Bagg, Bull. U. S. G. S., No. 



88, p. 27. 



Description. — "Test arenaceous, rough, flask-shaped; chambers 

 unequal and irregular, at first involute, then evolute and arranged 

 in an elongated series, closely set, numerous (about fifteen), 

 narrow, separated by straight depressed septa; aperture divided. 



"Length, 2.6 mm. ; breadth, 0.6-0.9 mm." (Bagg.) 



Formation and locality. — ^Vincentown limesand, Vincentown 

 (Bagg). ■ 



Geographic distribution. — New Jersey. 



Sub-family TROCHAMMININ/E. 



Genus Trochammina Parker and Jones. 



Trochammina inflata (Montagu). 



Plate I., Figs. 3-s. 



1808. Nautilus inHatus Montagu, Test. Brit. Suppl., p. 81, pi. 



xviii, fig. 3. 

 1884. Trochammina inflata Brady, Chal. Rept., vol. ix, p. ^2i^ 



pi. xli, fig. 4, a-c. 

 1898. Trochammina inflata Bagg, Bull. U. S. G. S., No. 88, p. 



27. 



