FORAMINIFERA OF THE NORTH PACIFIC OCEAX. 43 



Plate 14. 



Fig. 1. Globigerina digitata. X 50. Adult specimen. 



2. Globigerina digitata. X 50. Adult specimen. 



3. Globigerina digitata. X 50. Young specimen. 



4. Nonionina stelligera. X 66. a, from side; 6, apertural view. 



5. Nonionina asterizans. X 66. a, from side; b, apertural view. 



6. Nummvlites cumingii. X 13. a, side view; b, apertural view. 



7. Operculina ammonoides. X 33. 



8. Polystomella svbnodosa. X 133. a, front view; b, apertural view. 



Plate 15. 



Fig. 1. Nonionina scapha. X 100. a, side view; b, front A r iew. 



2. Nonionina orbimlaris. X 50. (After Brady). 



3. Nonionina turgida. X 50. a, side view; 6, front view. (After Brady). 



4. Nonionina stelligera. X 100. a, side view; b, front view. 



Plate 16. 



1. Nonionina boueana. X130. a, side view; b, face view. 



2. Nonionina stelligera. X130. a, side view; b, face view. 



'. Nonionina scapha, slightly umbilicate form. X 75. a, side view; b, face 



view. 

 4. Nonioriina scapha. more typical form. X 75. a, side view; b, face view. 



Plate 17. 



1. Nonionina umbilicutula. X 75. a, side view; b, face view. 



2. Nonionina pompilioides. X 75. a, side view; b, face view. 



3. Nonionina depressula. X 130. a, side view; b, face view. 



Plate 18. 



Fig. 1. Polystomella aispa. X 30. a, side view; b, face view. 



2. Polystomella striato-punctata. X 66. a, side view; 6, face view. 



3. Polystomella macella. X 66. a, side view; b, face view. 



Plate 19. 



Fig. 1. Polystomella sibirica. X 30. a, side view; 6, face view. 



2. Amphistegina lessonii. X 30. 



3. Operculina complanata, var. granulosa. X 18. 



4. Polystomella craticulata. X 35. a, side view; ft, face view. 



5. Heterostegina depressa, young specimen. X 35. 

 6912°— 14 4 



