FAMILY 29. HETEROHELICIDAE 239 



Subfamily 7. Eouvigerininae 

 Test in the earliest stages biserial, later triserial or in the 

 most specialized genera uniserial after the triserial stage or 

 throughout. 



Genus EOUVIGERINA Cushman, 1926 



Plate 33, figure 24; plate 34, figure 14 



Genoholotype, Eouvigerina americana Cushman 



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



p. 4. 

 Sagrina (part) of authors. 



Test elongate, the early chambers at least in the microspheric 

 form planispiral, later chambers becoming biserial, final cham- 

 bers irregularly triserial ; aperture circular or rhomboid at the 

 end of a definite neck, usually with a phialine lip. 



Upper Cretaceous. 



Genus PSEUDOUVIGERINA Cushman, 1927 



Plate 33, figures 25, 26; plate 34, figure 15 



Genoholotype, Uvigerina cristata Marsson 



Psendouvigerina Cushman, Contr. Cushman Lab. Foram. Res., vol. 2, 



1927, p. 81. 

 Uvigerma (part) of authors. 



Test in the early stages biserial, later triserial ; wall cal- 

 careous, coarsely perforate; chambers triangular in section with 

 the outer angle usually truncated; aperture usually with a 

 tubular neck and phialine lip. 



Upper Cretaceous, and perhaps Tertiary to Recent. 



Genus SIPHOGENERINOIDES Cushman, 1927 



Plate 33, figure 27; plate 34, figure 16 

 Genoholotype, Siphogcncrina plummeri Cushman 

 Siphogenerinoides Cushman, Contr. Cushman Lab. Foram. Res., vol. 3, 



1927, p. 63. 

 Siphoge7ierina (part) Cushman, 1926 (not Schlumberger). 



Test elongate, slightly tapering, in the early stages biserial, 

 later uniserial ; wall calcareous, perforate, with longitudinal 

 costae ; aperture with a neck and phialine lip but typically with- 

 out siphons between the chambers. 



Cretaceous. 



