Ipalaeontootapbtcal Society 1908, 



A MONOGRAPH 



ON THE 



RITISH FOSSIL 



ECHINODERMATA 



PKOM 



THE CRETACEOUS FORMATIONS. 



VOLUME SECOND. 

 THE ASTEBOIDEA AND OPHIUROIDEA. 



BY 



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



PART FIFTH. 



PAGES 133 138; TITLE-PAGE AND INDEX. 



LONDON: 



FEINTED FOE THE PAL^EONTOGEAPHICAL SOCIETY. 



1908. 



