2 4 Bulletin io 318 



gin somewhat projedling; cell walls thin, hyaline, aperture in 

 an entosolenian neck; length 2.00 mm., breadth 1.50 mm. 



Horizon and Locality . — Pleistocene; Cornfield Harbor, Md. 



Not common. 



Genus NODOSARIA Lamarck. 



Nodosaria acuieata. 



Syn. Nodosaria acuieata d'Orbigny, Foram. Foss. Vien., p. 35, pi. i, figs. 

 26, 27, 1846. 



Test rather small, short and stoutly built; primordial end blunt- 

 ly rounded, anterior large and bulbous, prolonged into a tubular 

 neck which carries the aperture; segments five in number, short, 

 only slightly constridted, surface very thickly covered with spines 

 which proje(5l straight out, or nearly so, from the surface. 



This interesting species should perhaps be considered as iden- 

 tical with Nodosaria hispida d'Orbigny, but typical forms of the 

 latter are always deeply constridted at the nodes and sometimes 

 the chambers are entirely separated and are then conne(!;\ed by 

 stoloniferous tubes, while the segments of Nodosaria acuieata are 

 almost flush at the sutures. 



Horizon and locality. — Miocene; Norfolk, Va. Well boring, 

 depth 665 feet. 



Nodosaria affinis. 



Syn. Nodosaria affiuis d'Orbigny, Foram. Foss. Vien., p. 39, pi. i, figs. 

 36-39, 1846. 

 Nodosaria affinis Sherborn and Chapman, Jour. Roy. Microsc. Soc, 

 ser. 2, vol. vi, p. 748, pi. xiv, -fig. 33, 1886. 

 Test very large, nearly straight, more tapering than Nodosar- 

 ia bacilhim and without having the primordial chamber larger 

 than the succeeding one; proximal end acuminate; chambers num- 

 erous, unconstridted below but becoming distinctly so above; sur- 

 face marked by about ten distin(5l elevated costse as in Nodos- 

 aria bacillu7n; aperture central, elevated on the ultimate chamber; 

 length 9.00 mm. or more. 

 Horizon and locality. — Eocene; Woodstock, Va. 

 Geological distributio?i . — Tertiary. 

 Nodosaria bacillum. 

 Syn. Nodosaria bacillum Defrance, Diet. Sci. Nat., vol. xxxv, p. 127; 

 vol. xxxvi, p. 487, Atlas Conch., pi. xiii, fig. 4, 1825. 

 Nodosaria bacillum Bagg, Johns Hopkins Univ. Cireiilars, vol, xv, 

 p. 5, 1895. 

 Test very large, straight or nearly so, surface marked by a- 

 bout ten very distind; snow-white costae, though the number does 



