778 FOEAMINIFEKA OF THE KEEIMBA AECHIPELAGO. 



PLATE XLV. 



Figs. 1-4. Massilina secans, var. reticulata nov. Figs. 1, 2. Side views. Fig. 3. 

 Side view of abnormal specimen. Fig. 4. Oral view. X 45. 

 5-12. Massilina secans, var. ruyosa nov. Figs. 5-7. Side views. Fig. 8. 



■ . Side view of distorted specimen. Fig. 9. Side view of large 



compressed type. Fig. 10. Edge view. Fig. 11. Oral view. 

 Fig. 12. Section. X 27. 



13-14. Massilina macilenta {Bi-a(\j). Fig. 13. Side view. Fig. 14. Oral view. 

 X 45. 

 15. Massilina alveoli id for mis Millett. Young form. X 45. 



16-18. 6'irpnoilina ofcrf^'Sidebottom. Fig. 16. Side view. Fig. 17. Edge 

 view. Fig. 18. Oral view. X 45. 



19-21. Sicpnoilina edwardsi Schlumberger. Figs. 19, 20. Side views. Fig. 21. 

 Oral view. X 45. 



22-25. Articulina sagra d'Orbiguy. Figs. 22-24. Side views. Fig. 25. Oral 

 view. X 45. 



26-33. Articulina coni co-art icv lata (Batsch). Figs. 26, 27. Dentaline type of 

 Brady. Figs. 28, 29. Straight type of Bat^xh. Fig. 28. Showing 

 early milioline chambers. Fig. 30. Batsch type approaching 

 d"Orbigny's Modele no. 22 {Articulina nitida) also shov>'ing milioline 

 early chambers. Fig. 31. Dentaline type of Karrer. Fig. 32. 

 Diagrammatic section showing milioline initial portion of the Batsch 

 type. Fig. 33. Diagrammatic section showing orbitoline initial 

 portion of the dentaline type. Figs. 26-31. X45. Figs. 32, 33, X 98. 



