234 SYSTEMATIC PALEOXTOLOGY 



Textulaeia sagittula Defiance. 

 Plate LXII, Fig. 2. 



Textularia sagittula Defrance, 1834, Diet. Sci. Nat., vol. xxxii, p. 177; 1828, vol. 



liii, p. 344; Atlas Concli., pi. xiii, fig. 5. 

 Textularia sagittula Brady, 1884, Chal. Rept., vol. ix, p. 361, pi. xlii, figs. 17, IS. 

 Textularia sagittula Bagg, 1898, Bull. Amer. Pal., No. 10, p. 20. 



Description. — Test elongated^, strongly compressed, with sharp-angled 

 perij)heral margin; chambers numerous, about ten to twelve in each 

 series in typical forms, closely set, separated by short, nearly straight 

 septal lines externally visible; aperture linear. 



Specimens of this form occur also in the Cretaceous (Eancocas) of 

 New Jersey. It is rare in the Eocene of Maryland as are all species of 

 the Textularia type. Three specimens have been recognized from 

 Upper Marlboro. In present oceans this is one of the most wide-spread 

 and commonest of all the Textularidae and Brady states that the same 

 is true among the fossil Foraminifera. This may be attributed to the 

 thick and solid walls, which, though not definitely arenaceous are so 

 compactl)'' built of opaque material that they are more readily preserved 

 than more delicate types. It is a shallow water species of temperate 

 seas but is reported by Professor Brady to occur in the North Atlantic 

 at the depth of 2675 fathoms and at 1425 fathoms in the South Atlantic. 



It occurs in the fossil condition in the Cretaceous formations of the 

 north of Ireland (Wright), in the Cretaceous of New Jersey, the Eocene 

 of the London Basin (Jones, Parker and Brady), the Lower Eocene of 

 the Thanet beds of Pegwell Bay (Burrows), the Miocene of Austria, 

 France, and elsewhere (d'Orbigny, Czjek, etc.), Miocene of Maryland 

 and Virginia (Bagg), the later Tertiaries in Italy (Defrance, Jones and 

 Parker, d'Orbigny), the Crag of England (Jones, Parker and Brady), and 

 the Post-Tertiary beds of Norway, Scotland, and Ireland (Sars, Eobert- 

 son, Wright). 



Occurrence. — Aquia Formation. Upper Marlboro. 



Collections. — Johns Hopkins University, Maryland Geological Survey. 



Textularia subangulata d'Orbigny. 

 Plate LXII, Fig. 3. 



Textidiirin siilxiiiijnhila crOrbig-iiy, 1S4(), Forain. Fossiles Vienue p. 247, pi. xv, 

 fi"S. 1-3. 



