Ipalxontoovnpbical Socict\^, 1008. 



A MONOGRAni 



r> u I r I s II F o s s T L 



ECHINODERMATA 



FROM 



THE cnKTArEOCS FORMATIONS. 



VOLUME SECOND. 

 THE ASTEEOIDEA AN]) OPHIUEOIDEA. 



W. K. S PENCE K, B.A., F.(..S. 



PART FIFTH. 

 Paqes 133 — 138; TiTLE-PAOE AND Index. 



LONDON: 

 PRINTED FOli THE PAL^ONTOGRArHICAL SOCIETY. 



1908. 



