ART 6 PORAMINIFERA: POLYMORPHINIDAE — CUSHMAN AND OZAWA 107 

 PSEUDOPOLYMORPHINA JONESI Cusliman and Ozawa, new species 



Plate 28, figures 1 a-c 



Polymorphina nodosaria Jones, Foram. Crag, pt. 3, 1896, p. 262, pi. 1, 



figs. 55-58 {Dimorphina) . 

 Polymorphina thouini Jones (not d'Orbigny), Foram. Crag, pt. 3, 1896, 

 p. 261, pi. 1, fig. 59. 



Test cylindrical, elongated, rounded at the base; chambers as long 

 as wide, circular in transverse section, arranged at the beginning in a 

 triserial series, later becoming uniserial; sutures but little depressed, 

 distinct; wall smooth; aperture radiate. 



Length of holotype 1.60 mm.; breadth 0.36 mm. 



Holotype. — (Cushman Coll. No. 11745.) From Miocene, Burdigalien 

 of St. Paul de Dax, near Bordeaux, France. 



Pseudopolymorphina jonesi is different from Reuss's Polymorphina 

 nodosaria and P. subnodosa in having the chambers not inflated and 

 the sutures not depressed. Jones's Polymorphina nodosaria and 

 P. thouini, figured from the Coralline Crag of Sutton, are the same as 

 the present species. It may be noticed here that d'Orbigny's Di- 

 morphina nodosaria, described from the Vienna Basin, is a Marginulina. 



Distribution. — Jones's specimens were from the Pliocene Crag of 

 Sutton, England. We have specimens also from the Miocene of 

 St. Paul de Dax, near Bordeaux, France. 



PSEUDOPOLYMORPHINA SUBCYLINDRICA (Hantken) 



Plate 28, figures 2 a-c 



Polymorphina subcylindrica Hantken, A Magy. Kir. foldt. int. evkonyve, 



vol. 4, 1875 (1876), p. 51, pi. 14, fig. 14; Mitth. a. d. Jahrb. k. ungar. 



geol. Anstalt, vol. 4, 1875 (1881), p. 60, same pi. and fig. (misprinted 



subcyindrica in explanation of plate) . 

 Cristellaria pleurostomelloides Kakrer, Sitz. k. Akad. Wiss. Wien, vol. 58 (1), 



1868, p. 171, pi. 4, fig. 5. 

 Psecadium oblongum Franzenau, Glasnik. kr. nar. drutztva God., vol. 6, 



1894, p. 275, pi. 4, fig. 52. 



Test elongated, more or less irregularly cylindrical, rounded at the 

 base; chambers longer than wide, arranged at the start in a nearly 

 triserial series, later becoming more or less uniserial, but little embrac- 

 ing; sutures depressed, distinct; wall smooth, thick; aperture radiate. 



Length of figured specimen 1.20 mm.; breadth 0.40 mm.; thickness 

 0.35 mm. 



Hantken's figure of the present species shows a nearly triserial 

 arrangement of the earlier three chambers, to which are added two 

 uniserial chambers. The chambers are not much elongated and are 

 separated by depressed sutures. Our figured specimen from the 

 Vienna Basin resembles Karrer's Cristellaria pleurostomelloides from 

 Kostej, and has slightly longer chambers than Hantken's species, 

 although there is no important difference between them. 



