26 Bulletin io 320 



Jersey are much larger and show less regularity in the size 

 of the chambers. The small Eocene specimens are not very 

 common . 



Horizon and locality. — Eocene; Pamunkey river, Va. 



Geological distribution. — Permian to Recent. 



Nodosaria obliqua. 



Syii. Nautilus obtiquus I,imie, Syst. Nat., 12 ed., p. 1163, 281, 1767 ; ibid, 

 13 ed. (Gmelin's), p. 3372, No. 14, 178S. 

 Nodosaria obliqua Brady, Chal. Rep't, vol. ix, p. 513, pi. Ixiv, figs. 

 20-22, 1884. 



Test, variable in size, sometimes very large, elongate, taper- 

 ing, arcuate; septal lines depressed, surface costate, costae var)'- 

 ing in size and number in different specimens; chambers nutli- 

 erous, ventricose, distincft; aperture central, radiate. 



The few specimens we have of this species are rather short 

 and stoutly built like Dcyitalina confliiens ^q.\^ss, which form they 

 are identical with, the latter being a variety of this exceeding- 

 I5' variable species. 



Locality. — Norfolk, Va. Well-boring, depth 685 feet. 



Geological distribution. — Lias to Recent. 



Genus VAGINULINA Lamarck. 



Vaginulina legumen. 



Syn. Nautilus legumen Linne, Syst. Nat., 10th Ed., p. 711, No. 248, 1758; 

 I2tli Ed., p. 1164, No. 288, 1767. 

 Vaginulina legumen Bagg, Johns Hopkins Univ. Circulars, vol. xv, 

 P- 5, 1895- 

 Test nearly straight, pod-like, compressed, smooth, consisting 

 of only six chambers; septa limbate, parallel, oblique, less dis- 

 tindl towards the distal end; ultimate chamber slightly pro- 

 longed at the anterior end; aperture radiate; length 0.80mm. 

 Horizon and locality . — Eocene; Sunny side, Md. 

 Geological distribution. — Trias to Recent. 



Genus CRISTELLARIA Eamarck. 



Cristellaria cultrata. 



Syn. Robulus cultratus Montfort, Conch. Syst., vol. i, p. 214, 54 genre, 1808. 



Cristellaria cultrata Parkers Jones, Phil. Trans., vol. civ, p. 344, pi. 



xiii, figs. 17, 18; pi. xvi, fig. 5, 1865. 



Test circular, biconvex, smooth and glistening, margin sharp, 



broadly keeled; chambers seven to eleven, somewhat convex, 



smooth or costate; aperture radiate. ' 



Cristellaria cultrata is a common form at several localities in 

 the Upper Cretaceous formations of New Jerse5^ The width 



