CRIST AT A. 



ReNL'LITES 



Cristellaria 

 Orbiculina 



SPHyERULATA. 



MiLIOLA 



Gyrogonites 

 Melonites 



RADIO LATA. 

 Rotalites 

 Lenticulites 

 Placentula 



NAUTILACEA. 



DiSCORBITES 



Siderolites 



polystomella 



vorticialis 



NuMMULITES 



3846 Nautilus Beccarii, Mont., Tenby, G. B. 



3844 " pompilius, Linn., East Indies. 



3845 " umbilicatus, Lam., '• 



A3IM0NEATA. 



Ammomtes 



