x CRETACEOUS LAMELLIBRANCHIA. 
officially connected with the institutions named, and in this respect I desire to 
express my sincere thanks to Mr. H. A. Allen, Mr. H. Bolton, Mr. W. Rupert 
Jones, Mr. F. Leney, Mr. E. T. Newton, Mr. R. B. Newton, Mr. H. M. Platnauer, 
Mr. F. R. Rowley, and Dr. A. Smith Woodward. Iam also greatly indebted to 
several geologists for the loan of specimens from their collections, especially to 
Dr. H. P. Blackmore, Mr. R. M. Brydone, Mr. G. E. Dibley, Mr. R. Fortin, My. 
C. Griffith, Mr. A. de Grossouvre, Professor E. Holzapfel, Mr. A. J. Jukes-Browne, 
Mr. G. W. Lamplugh, Mr. J. P. J. Ravn, Mr. C. Reid, Dr. A. W. Rowe, Mr. J. 
Scanes, Mr. J. W. Stather, Mr. J. F. Walker, and Dr. A. Wollemann. I must 
likewise thank Mr. Jukes-Browne and Dr. F. L. Kitchin for thei kindness im 
reading the proofs and for other valuable assistance, whilst in bibliographical 
difficulties I owe much to the ever-ready help and unrivalled knowledge of 
Mr. C. Davies Sherborn. 
A portion of the travelling expenses involved in the preparation of this work 
and a part of the cost of the drawings have been defrayed from two grants made 
to me by the Government Grant Committee of the Royal Society. Every facility 
for carrying on this work in the Woodwardian Museum has been given me by 
Professor T. MeKenny Hughes, whose kindness I gladly take this opportunity of 
eratefully acknowledging. 
