Plate 54. VINCENTOWN GLOBOROTALIA 



(All figures X 110) 



Figures la-Sc. Globorotalia elongata Glaessner 189 



Hypotypes (USNM P5133a-e). la, 2, 3, 4a, 

 5a, Spiral views, showing rapid increase in cham- 

 ber size and elongate test due to the relatively 

 high chambers, lb, 4b, 5b, Umbilical views, 

 showing open umbilicus, and apertural lip. Ic, 

 4c, 5c, Edge views, showing compressed form, 

 rounded to subacute periphery and flattened 

 spire. 



Figures 6a-7c. Globorotalia perclara Loeblich and 191 

 Tappan, new species 



Paratypes (USNM PS135a, b), showing small 

 size, low spire, gradually enlarging rounded 

 chambers, open umbilicus, spinose umbilical side 

 and extraumbilical-umbilical aperture, a. Spiral 

 side; b, umbilical side; C, edge. 



Figures 8a-9c. Globorotalia imitata Subbotina 



Hypotypes (USNM PS131a, b), showing small 

 size, relatively closed umbilicus, slightly flattened 

 and compressed chambers on the spiral side, and 

 low aperture, a, Spiral side; b, umbilical side; 

 C, edge. 



Figures 10a-13c. Globorotalia pseudomcnardii BoUi 

 Hypotypes (USNM PS137a-d). a. Spiral 

 views, showing rapid increase in chamber size, 

 broad and low chambers with semicircular out- 

 line, and peripheral keel, b. Umbilical views, 

 showing open umbilicus and narrow apertural 

 lip. C, Edge view, showing compressed form, 

 acutely angled and keeled periphery and low but 

 e.xtensive aperture. 



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