THE OOLITIC ECHINODERMATA. 



421 



MIDDLE DIVISION. 



UPPER DIVISION. 



Korest 

 Miirble. 



Cornbnish. 



Kelloway 

 Rock. 



Oxfoid 

 Clav. 



Lower 

 Calc. Grit 



Coralline 

 Oolite. 



Upper 

 Calc. Grit 



Kinimc- 

 ridgc Clay 



Portland Portland 

 Sand. Oolite. 



Piirbeck 

 Beds. 



Observ.\tions and Foreign 

 Localities. 



France. 



France and Germany. 



Boulogne-sur-Mer. 



France. 



France. 



France and Switzerland. 



Switzerland. 



France and Switzerland. 



France and Germany. 



