MONOGRAPH 



ON THE 



BRITISH FOSSIL 



ECHINODERMATA 



OF 



THE OOLITIC FORMATIONS. 



BY 



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



VICE-PRESIDENT OF THE PALiEONTOGRAPHICAL SOCIETY; CORRESVONDING MEMBER OF THE ROYAL SOCIETY OF SCIENCES 



OF LIEGE ; THE SOCIETY OF NATURAL SCIENCES OF NEUCHATEL ; VICE-PRESIDENT OF THE COTTESVOLD 



NATURALISTS' FIELD CLUB; CONSULTING SURGEON TO THE CHELTENHAM HOSPITAL; 



AND MEDICAL OFFICER OF HEALTH TO THE URBAN SANITARY DISTRICTS 



OF CHELTENHAM, CHARLTON KINGS, AND LECKHAMPTON. 



VOLUME L— THE ECHINOIDEA. 



LONDON: 



PRINTED FOR THE PAL^IONTOGRAPHICAL SOCIETY. 



1857—1878. 



