THE OOLITIC ECHINODERMATA. 



423 



MIDDLE DIVISION. 



UPPER DIVISION. 



Forest 

 Marble. 



Cornbrasb 



Kelloway 

 Rock. 



0.xford 

 Clay. 



Lower 

 Calc. Grit. 



Coralline 

 Oolite. 



Upper 

 Calc. Grit. 



Kimme- 

 ridgc Clay 



Portland 

 Sand. 



Fortliind 

 Oolite. 



Purbeck 

 Beds. 



Observations and Foreign 

 Localities. 



France. 



France, Germany, and Swit- 

 zerland. 



Ranville and Luc, France. 



Ranville, France. 



Ranville, Port-en-Bessin, 

 France, 



France and Switzerland. 



55 



