Ipalaeontoovapbical Society 1905. 



A MONOGRAPH 



ON THE 



BRITISH FOSSIL 



ECHINODERMATA 



FROM 



THE CRETACEOUS FORMATIONS. 



VOLUME SECOND. 

 THE ASTEROIDEA. 



BY 



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



PART THIRD. 



PAGES 6790; PLATES XVII XXVI. 



LONDON: 



PRINTED FOE THE PAL^ONTOGEAPHICAL SOCIETY. 



1905. 



