ART. 6 FORAMINIPERA : POLYMORPHINIDAE — CUSHMAN AND OZAWA 93 



Polymorphina oblonga Roemer, Neues Jahrb. f. Min. etc., 1838, p. 386, pi. 3, 



fig. 34. 

 Globulina suhalpina Gumbel, Abhandl. kon. bay. Akad. Wiss. Mlinchen, 



CI. II, vol. 10, 1868 (1870), p. 646, pi. 2, figs. 80 a. b. 

 Polymorphina obovata Grztbowski, Pod. Dukli. W. Krakowie, 1894, p. 117, 



pi. 2, fig. 23. 

 Polymorphina proteus Beissel (part), Abhandl. preuss. geol. Landes. Aus., 



vol. 3, 1891, p. 59, pi. 11, figs. 4-7 (not 1-3, 8-56; pi. 12, figs. 1-16). 



Test elongate, more or less compressed, oblong, rounded at both 

 ends; chambers rounded to oval, arranged at first m a nearly triserial 

 series, later becoming almost biserial; sutures depressed, distinct; 

 wall thick, smooth, often with fistulose tubes; aperture radiate. 



Length 1.05-L50 mm,; breadth 0.50-0.80 mm.,; thickness 0.28- 

 0.40 mm. 



In their monograph of Polymorphina, H. B. Brady, Parker, and 

 Jones placed Polymorphina soldanii d'Orbigny, Polymorphina oblonga 

 d'Orbigny (not Roemer), and Polymorphina uvaeformis together, but 

 in the Challenger report Brady separated d'Orbigny's P. oblonga from 

 P. soldanii without giving any notes. 



Pseudopolymorphina soldanii is undoubtedly related to Guttulina 

 oblonga d'Orbigny. From such a form it might be derived by losing 

 its quinqueloculine arrangement of chambers and the chambers 

 becoming shorter and rounded. The present species seems to be 

 very variable in its form. The figures given by Fornasini are much 

 broader than the figures copied by Brady, Parker, and Jones, though 

 both figures present the same general characters. 



Polymorphina oblonga Roemer and P. obovata Grzybowski are ap- 

 parently the same, judged by the figures, and both have compressed 

 tests consisting of rather short, rounded chambers arranged in a 

 somewhat biserial series. After having examined German Oligocene 

 material from several localities, among which there are specimens 

 resembling Polymorphina oblonga Roemer, as well as Pseudopoly- 

 morphina soldanii, we are convinced that they should be united. 



Figures 4-7 in plate 11 of Polymorphina proteus Beissel, show a 

 biserial arrangement of short chambers and are very close to the 

 present species. 



We have several Upper Cretaceous specimens of Pseudopolymor- 

 phina soldanii from Maastricht, which are almost the same as Beissel's 

 figures above mentioned. 



Polymorphina subalpina Giimbel is also included in the present 

 species with some doubts. 



Distribution. — There are specimens in our collection from the fol- 

 lowing localities ; 



Pliocene. — England, Crag, Sutton. 



