A MONOGRAPH 



ON THE 



BRITISH FOSSIL 



ECHINODERMATA 



FROM 



THE OOLITIC FORMATIONS. 



BT 



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



eORRESPONDIKG MEMBEK OF THE EOYAL SOCIETY OF SCIENCES OF LIEGE, THE SOCIETY OF 



NATURAL SCIENCES OF NEUFCHATEL, AND SENIOR SL'RGEON TO 



THE CHELTENHAM HOSl'lTAL. 



VOLUME SECOND. 



PART SECOND. 

 ON THE OPHIUROIDEA. 



Pages 131— 154; Plates XIll— XVIIJ. 



LONDON: 



PRINTED FOR THE PAL^ONTOGRAPHICAL SOCIETY. 



1866. 



