50 



BULLETIN 161, UNITED STATES NATIONAL MUSEUM 



This species described by Scliwager from the Phocene of Kar 

 Nicobar is a fairly common one in various parts of the Pacific. In our 

 present material it is not nearly so abundant as is the preceding species. 

 It may be distinguished from U. ampullacea by the stouter form of the 

 test, which does not have the chambers so definitely concentrated at 

 the base, in the adult stage tending rather to become biserial than 

 uniserial. In our material it is represented particularly by the 

 foUowing variety. 



UVIGERINA PROBOSCIDEA Schwager var. VADESCENS Cushman 



Plate 14, Figures 5-9 



Uvigerina prohoscidea Schwager var. vadescens Cushman, Contr. Cushman Lab. 

 Foram. Res., vol. 9, p. 85, pi. 8, figs. 14, 15, 1933. 



Variety differing from the typical in the slenderer form, smaller 

 size, and the base, which is usually ornamented with a very distinct 



