﻿MONOGRAPH 



ON THE 



BRITISH FOSSIL 



CHINODERMAT 



FROM 



THE CRETACEOUS FORMATIONS. 



BY 



THOMAS WRIGHT, M.D., F.R.S. Edin., F.G.S v 



CORRESPONDING MEMBER OF THE ROYAL SOCIETY OF SCIENCES OF LIEGE, THE SOCIETY OF 

 NATURAL SCIENCES OF NEUFCHATEL ; SENIOR SURGEON TO THE CHELTENHAM 

 HOSPITAL; AND MEDICAL OFFICER OF HEALTH FOR THE URBAN 

 SANITARY DISTRICTS OF CHELTENHAM, CHARLTON- 

 KINGS, AND LECKHAMPTON. 



VOLUME FIRST. 

 PART SIXTH. 



ON THE ECHINOCONIDyE. 



Pages 185—224 ; Plates XLV— LII. 



LONDON : 



PRINTED FOR THE PALiEONTOGRAPHICAL SOCIETY. 



1874. 



