Xiv INTRODUCTION. 
National Museum at Rio de Janeiro, made with the kind help 
of Professor Orville A. Derby, has also yielded some new facts ; 
while a study of the small series of Swiss Neocomian fishes and 
Lebanon Cretaceous fishes at Genova, thanks to the kindness ot 
Drs. Bedot and Weber, has elucidated several points left doubtful 
by Pictet’s original descriptions. The Museums of the Universities 
of Munich and Naples have been re-visited ; while the Woodwardian 
Museum at Cambridge, and the Willett Collection in the Brighton 
Museum, have proved as useful to the author now as in the prepara- 
tion of the previous volumes of the Catalogue. Thanks are not only 
due to the many friends and colleagues in Palaeontology who have 
facilitated these researches, but also to Mr. G. A. Boulenger, F.R.S., 
whose valuable advice and assistance have been continually at 
the writer’s disposal, and whose opinions concerning the general 
relationships of the higher fishes 1 correspond very closely with those 
suggested by this Catalogue. 
ARTHUR SMITH WOODWARD. 
Department of Geology, 
October 1st, 1901. 
List of Codlf.ctions. 
In addition to the Collections enumerated in Parts I. to III., the 
following are also referred to in the present volume : — 
Bravarcl Collection. — Ycrtebrato fossils from the Tertiaries of 
France, purchased from M. Auguste Bravard, 1852. 
Castelli Collection. — A miscellaneous collection of Italian fossils 
made by Cav. Federico Castelli, of Leghorn, purchased 1898. 
Orem Collection. — Yertebrata from the Forest Bed of Norfolk 
and from the Fenlaml, collected by the Rev. C. Green, of Bacton, 
purchased 1813. 
Layton Collection. — Vertebrate remains dredged off the Eastern 
Coast, purchased from the Rev. John Layton, of Ilappisburgh, 
Norfolk, 1858. 
Prestwick Collection. — A miscellaneous collection including verte- 
brate remains from the Pliocene Crags, purchased from Professor 
(afterwards Sir Joseph) Prestwich, 1894. 
1 G. A. Boulenger, “ Les Poissons du Bassin du Congo ” (Music du Congo> 
1901). 
