2 INTRODUCTION. 
The last column is reserved for observations ; these no doubt might 
have been more ample, but it is hoped that the space may also be of 
service to students to record their own notes. 
The names of the species are printed in three forms of type : 
those now recognized being in antique roman characters, the 
synonyms of these in italics ; while the uncertain and doubtfully deter- 
mined forms, as well as the MS. names of species which have not as 
yet been figured or described, are placed in SMALL CAPITALS.* 
The stratigraphical arrangement adopted has necessitated the division 
of the lists into three separate tables. Some of the species are therefore 
repeated ; but this arrangement enables us to keep distinct the main 
groups of strata. 
In Table T. the Lias is divided into its several zones; additional 
columns are given to include the records of those observers who have 
only separated the formation into its three main stratigraphical divisions. 
A column is added for the S,ha3tic Beds, but these are not now 
included in the Lias. 
In Table II. the marine beds of the Lower Oolite are separated into 
the following six horizons : 
Corn brash. 
Grey Limestone, Brandsby Roadstone,f and Stonescliff Wood Series^ (of 
Mr. Hudleston). 
Millepore Bed and Whitwell Oolite. 
Eller Beck Bed and Hydraulic Limestone. 
Dogger. 
Blea Wyke Beds. 
In this table the columns' referring to the plants have to be arranged 
in a different manner to suit the three great estuarine series which 
separate the above-named marine bands. 
Table III. has eight main stratigraphical columns, which are grouped 
in the following manner : 
Portlandian Beds (Zone of Eel. lateralis). 
Kimeridge Clay. 
Upper Calcareous Grit, and Cement-stone of the Howardian Hills. 
Coral Bag. \ Zone of Am. plicatilis 
Middle Calcareous Grit and Upper Limestone. / or true Corallian. 
Lower Calcareous Grit and Lower Limestone, j ^pper Oxfordian or 
L Zone of Am.perarmatus. 
Oxford Clay. 
Kellaways Rock. (Lower Oxfordian.) 
* There are a large number of the MS. names of Bean in the British and other 
Museums, more particularly in the fine collection formed by Mr. Leckenby, and 
which is now in the Woodwardian Museum at Cambridge ; but with the exception 
of a few, of which good specimens exist, only those are inserted in this Catalogue 
which have previously appeared in published lists. Some of the species lately 
recorded by Mr. Lamplugh from the so-called Portlandiau Beds of Speeton are also 
omitted, as the Jurassic age of these beds is as yet somewhat doubtful. 
f Indicated by the no. 3. 
j Indicated by the no. 5. 
An extra column (Coralline Oolite) is added to include the observations of 
those who have only recorded the fossils in this general manner. 
