Plate 45. MATTHEWS LANDING GLOBIGERINA, GLOBOROTALIA, AND 



CHILOGUEMBELINA 



(Figure 9 X 220; all others X 145) 



Figures la-2c. Glohorotalia pseudobulloides (Plum- 192 

 mer) 



la, 2a, Spiral views of hypotypes (USNM 

 PS726a,b). lb, 2b, Umbilical views, showing 

 prominent lip of final and earlier chambers 

 remaining visible in the umbilical area. 2c, 

 Edge view. 

 Figures 3a-c. Globigerina trilociilinoides Plummer 183 

 3a, Spiral view of hypotype (USNM P5819). 

 3b, Umbilical view. 3c, Edge view. 

 Figures 4a-c. Glohorotalia varianta (Subbotina) 196 

 4a, Spiral view of hypotype (USNM PS708) 

 showing spinose surface. 4b, Umbilical view. 

 4c, Edge view. 

 Figures Sa-c. Glohorotalia elongata Glaessner 189 



5a, Spiral view of small hypotype (USNM 

 PS813). 5b, Umbilical view. 5c, Edge view. 

 Figures 6a-c. Glohorotalia imitata Subbotina 190 



6a, Spiral view of hypotype (USNM PS689), 

 showing similarity to G. compressa. 6b, Umbili- 

 cal view. 6c, Edge view, showing broadly 

 rounded periphery and inflated chambers, in 

 contrast with G. compressa. 

 Figures 7a-c. Glohorotalia angulata (White) 187 



7a, Spiral view of hypotype (USNM P5892) 

 showing keeled periperhy and strongly curved 

 282 



sutures. 7b, Umbilical view, with elevated 

 umbilical shoulder, small umbilicus and narrow 

 apertural lip. 7c, Edge view, showing angular 

 and keeled periphery and acutely angled umbili- 

 cal shoulder. 

 Figures 8a-c. Glohorotalia species 197 



8a, Side view of specimen (USNM PS880), 

 showing low chambers and curved sutures. 8b, 

 Umbilical view. 8c, Edge view. 

 Figures 9a, b. Chiloguemhelina midway ensis (Cush- 179 

 man) 



9a, Side view of hypotype (USNM P5830) 

 with asymmetrical aperture directed toward flat 

 side of test. 9b, Edge view. 

 Figures lOa-c. Glohorotalia pseiidomenardii BoUi 193 

 10a, Spiral view of hypotype (USNM P5701), 

 showing peripheral keel and rapid increase in 

 chamber size. 10b, Umbilical view, showing 

 small apertural lip. lOc, Edge view. 

 Figures lla-c. Glohorotalia perclara Loeblich and 191 

 Tappan, new species 



11a, Spiral view of paratype (USNM PS823), 

 showing small size, globular chambers and 

 spinose wall. lib, Umbilical view, showing 

 relatively wide umbilicus, lie, Edge view. 



