104 PROCEEtJlNGS OF THE NATIONAL MUSEtTM vol.77 



Pseudopolymorphina ovalis has a more or less compact test, consist- 

 ing of rather inflated chambers arranged in an almost biserial series, 

 and it is more or less related to Pyrulina, but the compressed fusi- 

 form test having the chambers arranged in a biserial series shows 

 a closer relationship of the present species to Pseudopolymorphina, 

 where we have placed it. 



Distribution. — Pseudopolymorphina ovalis is rather rare in the Am- 

 phistegina marl of Grunes Kreuz, Nussdorf, in Vienna. It is rarely- 

 found in the Recent state, and the specimens noted below are not 

 entirely typical. We have specimens of the present species from the 

 following localities : 



Recent. — Albatross Station D3407, in 885 fathoms off the Galapagos 

 Islands, and D4807 in 44 fathoms off Japan. Single specimens from 

 each station are larger than the typical form and may not be the same. 



Pliocene. — Belgium, Crag noir, Antwerp. 



Miocene. — Austria, Tortonian, Amphistegina marl, Grunes Kreuz, 

 Nussdorf, near Vienna. Hungary, Kostej, Banat. France, Bur- 

 digalien inferieur, Moulin de I'Eglise, Saucats. 



PSEUDOPOLYMORPHINA OBSCURA (Roemer) 



Plate 27, figures 2 a-b 



Polymorphina obscura Roemer, Neues Jahrb. f. Min., etc., 1838, p. 385, pi. 3, 



fig. 23.— Reuss, Sitz. Akad. Wiss. Wien, vol. 50, abt. 1, 1864, p. 471, pi. 3, 



figs. 8-10. 

 Polymorphina teretiuscula Roemer, Neues Jahrb. f. Min., etc., 1838, p. 385, 



pi. 3, fig. 24. 

 Polymorphina campanulata Roemer, Neues Jahrb. f. Min., etc., 1838, p. 385, 



pi. 3, fig. 22. 

 Polymorphina subdepressa Roemer, Neues Jahrb. f . Min., etc., 1838, p. 385, 



pi. 3, fig. 28. 



Test elongate, compressed, sides nearly parallel, slightly broader 

 near the apertural end, initial end rounded; chambers not elongated, 

 slightly embracing, arranged at first in a quinqueloculine series, and 

 later biserial; sutures but little depressed, distinct; wall thick, smooth; 

 aperture radiate. 



Length of figured specimen 3.30 mm.; breadth 1.25 mm.; thickness 

 0.65 mm. 



We have the same opinion as Reuss, who in the paper on the fauna 

 of the German upper Oligocene, published in 1864, put together 

 under P. obscura: Polymorphina obscura, P. teretiuscula, and P. 

 campanulata figured by Roemer. 



Polymorphina subdepressa v. Miinster, described for the first time 

 by Roemer in the same paper as the above three, has a much rounded 

 initial end, few chambers, and short test, and may be considered as 

 the megalospheric form of the present species. The early chambers 

 are not biserial, and for this reason we have placed the species in 

 Pseudopolymorphina. 



