AET. 6 FORAMINIFERA: POLYMORPHTNIDAE — CUSHMAN AND OZAWA 97 



Miocene. — France, Aquitanian superieur, near Mont de Marsan, 

 St. Avit; Burdigalien superieur, Ponl Pourquet, Saucats; Burdigalien 

 inferieur, St. Paul de Dax, Dax; Le Coquillat, Leognan; Moulin de 

 FEglise, Saucats. 



Eocene. — France, Calcaire grossier, Beauves; Lutetien, Chaussy. 



PSEUDOPOLYMORPHINA DUMBLEI (Cnshman and Applin) 



Plate 25, figures 1 a, b 



Polymorphina compressa d'Orbigny var. dumblei Cushman and Applin', 

 Bull. Amer. Assoc. Petr. Geol., vol. 10, 1926, p. 173, pi. 9, figs. 4, 5. 



Test compressed, elongated, obtuse at the base, more or less acute 

 at the apertural end; chambers slightly longer than wide, more or less 

 compressed, much embracing, arranged at first in a nearly triserial 

 series becoming biserial later; sutures but little depressed, distinct; 

 wall smooth; aperture radiate. 



Length 0.70-1.10 mm.; breadth 0.35-0.40 mm.; thickness 0.16-0.20 

 mm. 



The present species is an ally of Pseudopolymorphina decora of the 

 European Tertiary, and it is often difficult to separate them. The 

 important difference is the shape of chambers, which in the present 

 species are shorter than those of the European species. 



Polymorphina texana is a few-chambered species representing a 

 young stage of P. decora. 



Distribution. — This was originally described as a variety of P. 

 compressa but is not related to that species. The types are from the 

 upper Eocene of Texas. It is found in the upper Eocene of Texas, 

 Alabama, and Georgia as well as in samples from Mexico referred to 

 the Alazan clays. Single specimens from the Miocene and the Clai- 

 borne are close to this species as well as a few from the Midway, but 

 more material will give added light on their exact relationships. We 

 have no European material to place with this. 



Our specimens are from the following localities : 



Miocene. — Florida, Choctawhatchee marl, 1 mile east of Red Bay. 



Eocene. — Jacksonian, Bridge Creek, Iji mUes above Angelina River, 

 Texas; Powells Landing, east bank of Sepulga River, sec. 35, T. 4 N., 

 R. 13 E., Covington County, Ala. ; Conecuh River at Beck, Covington 

 County, Ala.; Cocoa sand, Keysers Hill, one-fourth mile west of 

 Water Valley, Choctaw County, Ala. Jackson, on old Waynesboro 

 Road, 5 miles north of Millen, Jenkins County, Ga.; Rich Hill, 

 Crawford County, Ga. Mexico, Alazan shale, Rio Buena Vista, 9.8 

 kilometers upstream from Tumbadero, Vera Cruz; Rio Tuxpam, 

 south side just above Agua Nacida, Vera Cruz, Mexico. 

 92709—30—7 



