Plate 100. 



Fig. 1. QulnqaelocuUna curtn.i X 33. D5134. 2-chaniljered stage, a, apertural 

 view; 6, side view. 



2. Quinqueloculina carta.? X 33. D5134. Central chamljers by transmitted 



light. 



3. S piroloculina gratcloupi. X 165. D5159. Central chambers by transmitted 



light. 



4. S piroloculina depressa. X 165. D5220. Central chambers by transmitted 



light. 



5. S piroloculina depressa. X 165. D5220. Central chambers bv transmitted 



light. 



6. Quinqueloculina rugosa. X 33. a, side view; /;, opposite side; c, apertural 



view. 



7. Quinqueloculina bicarintaki. X 33. a, side view; 5, opposite side; f, apertural 



view. 



589 



