A MONOGRAPH 



ON THE 



BRITISH FOSSIL 



ECHINODERMATA 



FROM 



THE CRETACEOUS FORMATIONS. 



VOLUME SECOND. 

 THE ASTEROIDEA AND OPHIUROIDEA, 



W. PERCY SLADEN, P.L.S., F.G.S., 



AND 



W. K. SPENCER, R.A., F.G.S. 



LONDON: 

 PRINTED FOR THE PAL^ONTOGRAPHICAL SOCIETY. 



1891—1908. 



