MONOGRAPH OF THE BRITISH FOSSIL ECHINODBRMATA FROM 

 THE CRETACEOUS FORMATIONS. 



Vol. II. — AsTEROiDEA AND Ophiueoidea. 



Mr. Sladen is the author of jjages 1 — 66, Phites I — XVI, while Mr. Spencer 

 is the author of the remainder of the Voh;me. ]\Ir. Spencer desires to express 

 his indebtedness to Dr. F. A. Bather for much help and advice in his share of 

 the work. 



ORDER OF BINDING AND DATES OF PUBLICATION. 



The Plates are intended to be collected and bound at the end of the Volume. 



