ART. 6 FORAMINIFERA: POLYMORPHINIDAE CUSHMAN AND OZAWA 145 



Quttulina vitrea (Bornemann) has the acute initial end and its septa 

 becoming parallel to each other; however, it may represent the 

 microspheric form of the present species. 



Polymorphina glandulinoides Fornasini is undoubtedly a typical 

 microspheric form. 



The first figure of Polymorphina proteiformis Reuss, as well as 

 Psecadium nussdorfensis, is characterized by the rounded initial 

 end and almost parallel septa. They are considered to represent the 

 megalospheric form of the present species. 



Distribution. — We have specimens from the upper Oligocene of 

 Ahnatal, near Cassel, Germany, and from the Miocene of Nussdorf 

 in the Vienna Basin. 

 92709—30 10 



