A MONOGRAPH 



ON THK 



BRITISH FOSSIL 



ECHINODERMATA 



FKOM 



THE OOLITIC FORMATIONS, 



BY 



THOMAS WRIGHT, M.D., F.R.S.E. F.G.8. 



CORRESPONDING MEMBER OF THE ROYAL SOCIETY OF SCIENCES OF LIEGE, 

 AND SURGEON TO THE CHELTENHAM HOSFITAL. 



PART THIRD, 



CONTAINING 



THE COLLYRITIDJE, ECHmOERISSIDTE, AND 

 ECHINOLAMPIDtE. 



LONDON : 



PRINTED FOR THE PALiEONTOGRAPHICAL SOCIETY. 



1859. 



