EXPLANATION OF PLATES. 

 Plate 1. 



Fig. 1. Chilostomella ovoidea . X 40. Partial side view. 



2. Chilostomella ovoidea. X 40. a, front view; b, apertural view. 



3. Chilostomella ovoidea. X 50. Broken specimen showing relative size of cham- 



bers (after Brady). 



4. 5. Chilostomella ovoidea. X 70. By transmitted light showing relations of in- 



terior chambers (after Brady). 



6. Allomorphina trigona. X 60. (After Brady.) 



7. Allomorphina trigona. X 60. (After Brady.) 



8. Allomorphina trigona. X 100. Viewed by transmitted light (after Brady ) . 



Plate 2. 

 Figures from photographs. X 30. 



Fig. 1. Globigerina sequilateralis, apertural view. 



2. Globigerina sequilateralis, front view. 



3. Globigerina sequilateralis, side view. 



4. Globigerina sacculifera, from above. 



5. Globigerina sacculifera, from below. 



6. Globigerina sacculifera, from side. 



7. Globigerina bulloides, from above. 



8. Globigerina bulloides, from side. 



9. Globigerina bulloides, from below. 



Plate 3. 

 Figures from photographs. X 30. 



Fig. 1. Globigerina helicina, from below. 



2. Globigerina helicina, from above. 



3. Globigerina conglobata, from below. 



4. Globigerina conglobata, from side. 



5. Globigerina conglobata, from above. 



6. Globigerina rubra, from above. 



7. Globigerina rubra, from side. 



8. Globigerina rubra, from side. 



9. Globigerina rubra, from below. 



Plate 4. 

 Figures from photographs. X 30. 



Fig. 1. Globigerina dubia, from above. 



2. Globigerina dubia, from side. 



3. Globigerina dubia, from below. 



4. Globigerina infiata, from above. 



5. Globigerina infiata, from below. 



6. Globigerina infiata, from side. 



7. Globigerina infiata, from side. 



8. Globigerina infiata, from side. 



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