Plate 5. ORBULINIDAE : GLOBIGERININAE 



Figures 1, 2. H astigerinella rhumbleri Galloway 32 



1, Umbilical view, showing clavate chambers 

 and elongate spines. 2, Spiral view, showing 

 spiroumbilical interiomarginal aperture. After 

 Rhumbler's original figures of H astigerina digi- 

 tata Rhumbler (not Brady) from the Recent of 

 the Atlantic. X 10. 

 Figures 3a, b. H astigerinella digitata (Brady) 32 



3a, Spiral side of hypotype (USNM P3037), 

 showing continuation of the spiroumbilical aper- 

 ture, and radial elongate later chambers. 3b, 

 Umbilical side, showing aperture. From the 

 Recent of the South Atlantic. X 95. 

 Figures 4a-d. Globoquadrina altispira (Cushman 31 

 and Jarvis) 



4a, Spiral view of holotype (Cushman Coll. 

 22482). 4b, Umbilical view, showing the um- 

 bilical aperture and the umbilical teeth, formed 



by the triangular apertural flaps of the final 

 whorl of chambers. 4c, Edge view. 4d, 

 Oblique view to show the triangular apertural 

 flaps. From the Miocene Bowden marl of 

 Jamaica, B.W.I. X 70. 



Figures 5a-c. Globoquadrina dehiscens (Chapman, 31 

 Parr, and Collins) 



5a, Spiral view of hypotype (USNM P3926). 

 5b, Umbilical view, showing less well developed 

 umbilical teeth and more closed umbilicus. 5c, 

 Edge view. From the Miocene (Balcombian) 

 of Victoria, Australia. X 140. 



Figure 6. Globoquadrina sp. 31 



6, Umbilical view of specimen (USNM P4S7S) 

 from the Miocene Lengua formation, Trinidad, 

 B.W.I., showing angular chambers as in G. de- 

 hiscens, but with well developed apertural teeth 

 as in G. altispira. X 100. 



