40 Bui.i,ETiN lo 334 



pl. V, fig. 32, 1851. 

 Notiionina affinis Bagg, Johns Hopkins Univ. Circulars, vol. 

 XV, p. 5, 1895. 



Test small, orbicular, strongly compressed, umbilicate, finely 

 perforate; chambers ten to twelve, small, flat, slightly curved, 

 separated by fairly distinc^t band-like septal lines; septal plane of 

 ultimate chamber somewhat higher than broad and quite large; 

 aperture short, semilunar. 



Diameter, 0.32 mm. 



Professor Reuss' figure agrees quite well with our specimen 



but there are twelve chambers visible in the last volution. Ac- 

 cording to Reuss this species is closely related to Nonionina 

 punctata d'Orbigny, but the latter species is thicker in trans- 

 verse section. 



Horizon and locality . — Eocene; Woodstock, Va. 



Geological distribution. — Cretaceous and Tertiary. 



Nonionina boueana. 



Syn. Nonionina bouea?ta d'Orbigny, 1846, Foram. Foss. Vien. , p. 108, 

 pl. V, figs. II, 12. 

 Nonionina boueana Brady, Chal. Rept, vol. ix, p. 729, pl. cix, 

 figs. 12, 13, 1884. 



Test broadly oval, strongly compressed laterally, peripheral 

 margin sharp angled, segments numerous, usually about ten or 

 twelve in the last volution, long, narrow, with slight lobulated 

 margin separated by distindl septa somewhat curved especially 

 toward the younger chambers; umbilicus depressed; separated 

 from Nonionina scapha by its sharp peripheral margin and more 

 numerous chambers. Aperture a small, arched opening on the 

 inner margin of the septal plane. 



Horizon a?z^ /^ot/z/>'.— Miocene; Norfolk, Va. Well boring, 

 depth, 645 feet. 



Geological distribution. — Upper Oligocene to Recent. 



Nonionina depressula. 



Syn. Nautilus depressulus Walker & Jacob, 1798, Adams' Essays 

 Microsc, Kanmacher's Ed., p. 641, pl. xiv, fig. 33. 

 Nonionina depressula Brady, Chal. Rept., vol. ix, p. 725, pl. civ, 



fig. 6, 7, 1884. 

 Nonionina depressula Bagg, Johns Hopkins Univ. Circulars, vol. 

 XV, p. 5. 1895. 



