790 POEAMINIFEEA OF THE KEEIMBA AECHIPELAGO. 



PLATE LI. 



Figs. 1-3. Polymorpliina complexa Sidebottom. Figs. 1, 2. Side view. Fig. 3. 

 Edge (oral) view. X 85. 

 4, 5. Sagrina virgula Brady. X 85. 



6-8. Sagrina striata (Scliwager). Figs. 6, 7. Side views. Fig. 8. Edge 

 view. X 60. 

 •9. Sagrina tessellataBiady. X HO. 



10-13. GloUgerina cretacea d'Orbigny. Figs. 10, 11. Superior views. Fig. 12. 

 Inferior view. Fig. 13. Edge view. X 83. 



14-18. Sphceroidina corticata, sp. n. Fig. 14. Oral view. Fig. 15. Side view. 

 Fig. 16. Detail of young form, showing the hexagonal surface orna- 

 ment. Figs. 17, 18. Specimens in balsam, side and edge views. 

 X 80. 



19-21. Spirillina vimpara'Eihrenherg. Thick variety. Fig. 19. Superior view. 

 Fig. 20. Inferior view. Fig. 21. Edge view. X 130. 



22, 23. Spirillina vivipara Ehrenberg. Denticulate variety. Fig. 22. Superior 

 view. Fig. 23. Inferior view. X 130. 



24, 25. Spirillina ornata Sidebottom. Fig. 24. Superior view. Fig. 25. 

 Inferior view. X 130. 



26-31. Spirillina semidecorata, sp. n. Fig. 26. Superior view of a specimen 

 of the depressed evolute tj'pe. Fig. 27. Ditto, inferior view. 

 Fig. 28. Superior view of the high crenelated type, the earlier whorl 

 obsciu-ed witli secondary shell-matter. Fig. 29. Ditto, edge view. 

 Fig. 30. Superior view of the involute type, the early whorls entirely 

 concealed by the later. Fig. 31. Ditto, inferior view. X 130. 



32-35. Cymlalopora milletti, sp. n. Figs. 32, 33. Side views. Fig. 34. 

 Apical view. Fig. 35. Basal view. X 62. 



36-39. Discorbina globularis (d'Ovhigny). Toothed variety. Fig. 36. Superior 

 view. Figs. 37, 38. Inferior views, showing the toothed processes 

 projecting into the umbilicus. Fig. 39. Edge view. X 55. 



