PLATE C. 



Fig. 1 to 6. TEXT UL ARIA ULOBULOSA , Ehrenberg -'' 



5. Side view. . 



6. Specimen from Nebraska. 



Figs. 7 and 8. TEXTULARIA AGGLUTINANS d'Orbigny 30 



Figs. 9 and 10. TEXTULARIA TUKRIS d'Orbigny 30 



10. Specimen from Nebraska. 



Fig. 11. TEXTULARIA CARINATA d'Oibigny, Nebraska 30 



Figs. 12, 13, 14. SPIROPLECTA AMERICANA Ehrenberg 31 



13. Specimen from Nebraska. 



14. From Ehrenberg's original figure in his Mikrogeologie. 



Figs. 15 and 16. GAUDRYINA PUPOIDES d'Orbigny 31 



16. Specimen from Nebraska. 



Figs. 17 and 18. VERNEUILINA PYGMJBA Egger. Nebraska 32 



Fig. 19. BULIMINA AFFINIS d'Orbigny. Nebraska 32 



Figs. 20 to 24. BULIMINA PUPOIDES d'Orbigny : 32 



21 to 24. Specimens from Nebraska. 



Fig. 25. PLEUROSTOMELLA SUBNODOSA Keuss, Nebraska 33 



Fig. 26. BOLIVINA DILATATA Reuss. Nebraska. 33 



Fig. 27. BOLIVINA PUNCTATA d'Orbigny. Nebraska 34 



Fig. 28. BOLIVINA PUNCTATA d'Orbigny 34 



