AET. 6 FORAMINIFERA: POLYMORPHINIDAE — CUSHMAN AND OZAWA 113 

 Gernis POLYMORPHINA d'Orbigny, 1826 



POLYMORPHINA BURDIGALENSIS d'Orbigny 



Plate 29, figures 7 a-c 



Polymorphina hurdigalensis d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 265, 

 No. 2; model No. 29. — H. B. Brady, Parker, and Jones, Trans. 

 Linn. Soc, vol. 27, 1870, p. 224, pi. 39, figs. 9 a, &.— Cushman and 

 OzAWA, Contr. Cushman Lab. Foram. Res., vol. 4, pt. 1, 1928, p. 16, 

 pi. 2, fig. 10. — OzAWA, Contr. Cushman Lab. Foram. Res., vol. 5, pt. 2, 

 1929, p. 35, pi. 6, figs. 1-3. 



Polymorphina hurdigalensis d'Orbigny var. lequilensis Fornasini, Mem. 

 Istit. Bologna Acad. Sci., ser. 5, vol. 9 (1900-1902), p. 73, fig. 26. 



Test fusiform to oblong, more or less flattened on one side, un- 

 symmetrically convex on the other; chambers elongate, more em- 

 bracing on the flattened side, arranged in an almost biserial series 

 from the start; sutures scarcely depressed, distinct; wall smooth, 

 translucent; aperture radiate. 



Length of figured specimen 0.75 mm.; breadth 0.40 mm.; thick- 

 ness 0.25 mm. 



Ozawa found that d'Orbigny's original specimen deposited in the 

 paleontological department, Museum of Natural History, Jardin des 

 Plantes in Paris, is lost, and the species has been neither figured nor 

 described by d'Orbigny; therefore the only reference having any 

 authority is a plaster model. Brady, Parker, and Jones figured a 

 model of Polymorphina hurdigalensis in their monograph, but as far 

 as the figures are concerned their model is different from that in the 

 Cushman Laboratory, because those figures are the reverse of that 

 form shown by this model; but all models of Polymorphina hurdi- 

 galensis, including that in the British Museum of Natural History, 

 which was examined, are just the same as this. Apparently this 

 reversal came in the drawing of the figures, a similar reversal being 

 shown in other species in Brady, Parker, and Jones' monograph. 

 According to the Tableaux Methodique, d'Orbigny's specimen was 

 obtained from the Miocene in the environs of Bordeaux. We have 

 examined much material from the same locality, as well as from Dax, 

 and only one specimen somewhat resembling the model was found. 

 The specimen figured here is just the same as Polymorphina hur- 

 digalensis, at least in the degree of embracing of the elongate chambers 

 and an unequal compression on each side of the test, although the 

 arrangement of chambers is not as regular as shown by the model, 

 which should be considered to be somewhat coventionalized. 



Fornasini's Polymorphina hurdigalensis var. lequilensis, obtained 

 from Lequile, is almost the same as ours. 



Distribution. — The locality of our figured specimen is Miocene 

 (Burdigalien inferieur), Moulin de I'Eglise, Saucats, (Gironde), 

 France. 



92709—30 S 



