﻿MONOGRAPH 



OH THE 



BRITISH FOSSIL 



ECHINODERMATA 



THE CRETACEOUS FORMATIONS. 



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



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

 NEUFCHATEL ; PRESIDENT OF THE GEOLOGICAL SECTION OF THE BRITISH ASSOCIATION, 1875 ; VICE-PRESIDENT 

 OF THE COTTESWOLD NATURALISTS' FIELD CLUB ; CONSULTING SURGEON TO THE CHELTENHAM 

 HOSPITAL; AND MEDICAL OFFICER OF HEALTH FOR THE URBAN SANITARY DISTRICTS 

 OF CHELTENHAM, CHARLTON -KINGS, AND LECKHAMPTON. 



VOLUME FIRST. 

 PART SEVENTH. 



ON THE ECHXNOCONID^, ECHINONIM1, ECHINOBRISSIME, 

 ECHINOLAMPIDiE, AND SPATANGIDiE. 



Pages 225—264 ; Plates LIII— LXII. 



LONDON : 



PRINTED FOR THE PALiEONTOGRAPHICAL SOCIETY. 



1875. 



