256 FORAMINIFERA 



Genus CHRYSALOGONIUM Schubert, 1907 



Plate 36, figure 18; plate 37, figure 17 



Genoholotype, Nodonaria polystoma Schwager 



Chrysalogonhim Schubert, Neues Jahrb. fiir Min., vol. 25, 1907, p. 243. 

 Nodosaria (part) Schwager, 1866. 



Test uniserial throughout, the chambers in a rectilinear 

 series; wall calcareous, perforate; aperture cribrate, terminal, 

 consisting of a group of rounded openings. 



Pliocene. 



Subfamily 6. Uvigerininae 



Test generally triserial, at least in the early stages, later in 

 some forms uniserial or irregular; aperture typically terminal 

 with a neck and phialine lip, and in some genera a spiral tooth 

 and an internal twisted tube connecting the chambers. 



Genus UVIGERINELLA Cushman, 1926 



Plate 36, figure 19; plate 37, figure 18 



Genoholotype, Uvigerina (Uvigerinella) californica Cushman 



Uvigeriiiella Cushman, Contr. Cushman Lab. Foram. Res., vol. 2, 1926, 



p. 58. 

 Uvigerina (part) of authors. 



Test generally triserial, tapering or fusiform; chambers 

 distinct and inflated; wall calcareous, perforate; aperture 

 typically connected with the border of the chamber, elongate, 

 with a raised collar and a tooth, internal tube often present. 



Miocene to Recent and probably earlier. 



Genus UVIGERINA d'Orbigny, 1826 



Plate 36, figures 20, 27, 28; plate 37, figure 19 

 Genotype, by designation, Uvigerina pigwea d'Orbigny 

 Uvigerina d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 269. 

 Test generally triserial, elongate, fusiform, rounded in 

 transverse section; chambers distinct and inflated; wall cal- 

 careous, perforate; aperture terminal, rounded, with a neck 

 and phialine lip, often with a spiral tooth and an internal 

 twisted tube. 



Cretaceous to Recent. 



