THE OOLITIC ECHINODERMATA. 



429 



MIDDLE DIVISION. 



Forest 

 Marble. 



Cornbrasli 



Ki'Uoway 

 Rock 



Oxford 

 Clnv. 



Lower 

 Calc. Grit 



UPPER DIVISION. 



Coralline Upper 

 Oolite. Calc. Grit 



Kininic- 

 lidjre Clav 



Portland 

 tsand. 



Portland 

 Oolite. 



Piirbeek 

 Beds. 



Observations and FoREIG^ 

 Localities. 



