Plate 4. ORBULINIDAE : GLOBIGERININAE 



Page 

 Figures la-c. Globigerina bulloides d'Orbigny 31 



la, Spiral side of hypotype (USNM P3917). 

 lb, Umbilical side, showing broad arched umbil- 

 ical aperture. Ic, Edge view. From Recent 

 beach sand, Porto Corsini, Italy. X US- 

 Figures 2a-c. Globigerinoides rubra d'Orbigny 32 

 2a, Spiral side of hypotype (USNM P3916), 

 showing supplementary sutural apertures. 2b, 

 Umbilical view, showing umbilical primary aper- 

 ture. 2c, Edge view. From the Recent of the 

 Atlantic. X 95. 

 Figures 3a-S. Pulleniatina ohliqueloculata (Parker ii 

 and Jones) 



3a, Spiral view of paratype (USNM P4228). 



3b, Apertural view, showing result of trocho- 

 spiral coiling with earlier umbilicus covered by 

 later whorls; broad arched ajiorture and thickened 

 lip. 3c, Edge view. P'rom the Recent of Ab- 

 rohlos Bank, South Atlantic. X 110. 4a, 

 Edge view of hypotype (USNM P4229a), show- 

 ing variation in the streptospiral development. 

 4b, Apertural view. 5, V'iew of dissected hypo- 

 type (USNM P4229b), showing neanic Globi- 

 gerina stage, with typically umbilical aperture, 

 and change in plane of coiling with later growth. 

 Hypotypes from the Recent of the Pacific. 

 X 75.' 



241 



