FORAMINIFERA OF NORTH PACIFIC OCEAN. 113 



Plate 12. 



Fig. 1. Lagena costata, oval form. X 90. a, front view; b, apertural view. 



2. Lagena costata, var. amphora. X 90. a, front view; b, apertural view. 



3. Lagena stelligera. X 75. a, front view; b, apertural view; c, basal view. 



4. Lagena plumigera. X 75. a, front view; b, apertural view. 



5. Lagena desmophora. X 90. a, front view; b, apertural view. 



Plate 13. 



Fig. 1. Lagena distoma. X 75. a, front view; b, apertural view. 



2. Lagena distoma. X 75. a, front view; b, apertural view. 



3. Lagena desmophora. X 75. a, front view; b, apertural view. 



4. Lagena intermedia. X 90. a, front view; b, apertural view. 



5. Lagena exsculpta. X 35. a, front view; b, apertural view. 



Plate 14. 



Fig. 1. Lagena quadricostulata. X 75. 



2. Lagena auriculata, var. costata. X 60. a, front view; b, apertural view. 



3. Lagena trigono-marginata. X 100. a, front view; b, apertural view. 



4. Lagena trigono-marginata. X 100. 



5. Lagena striato-areolata. X 100. 



6. Lagena striato-areolata. X 100. Portion of the surface. 



7. Lagena ampulla-distoma. X 60. 



8. Lagena fimbriata. X 60. 



9. Lagena quadrata. X 75. 



10. Lagena striato-punctata. X 75. 



Plate 15. 



Fig. 1. Lagena feildeniana. a, front view, X 150; b, apertural view, X 150; c, portion 

 of surface enlarged, X 375. 



2. Lagena feildeniana. X 150. Specimen with wider intercostal areas and higher, 



more acute coatee, a, front view; b, apertural view. 



3. Lagena foveolata, var. paradoxa. a, front view, X 75; b, enlarged portion of 



surface, X 150. 



Plate 16. 

 Fig. 1. Lagena aspera. X 90. 



2. Lagena lagenoides. X 150. 



3. Lagena lagenoides, var. tenuistriata. X 150. a, front view; b, side view. 



4. Lagena sublagenoides. X 75. a, front view; b, apertural view. 



5. Lagena sublagenoides, var. striatula. X 75. 



Plate 17. 



Fig. 1. Lagena crescenticostata. X 75. a, front view; b, side view. 



2. Lagena crescenticostata. X 75. Specimen with more simple ornamentation. 



3. Lagena staphyllearia. X 45. a, front view; b, apertural view. 



4. Lagena auriculata, var. subcarinata. X 150. a, front view; b, side view. 



5. Lagena auriculata, var. linearituba. X 75. a, front view; b, side view. 



Plate 18. 



Fig. 1. Lagena alveolata. X 75. a, front view; 6, side view. 



2. Lagena alveolata, var. plebeia. X 90. a, front view; 6, side view. 



3. Lagena alveolata, var. prolongate. X 75. 



4. Lagena alveolata, var. basiexcavata. X 75. 



5. Lagena alveolata, var. substriata. X 75. 



