INTRODUCTION. 3 
In this table the figures below the initials are, as nearly as possible, 
the same as those in the previous tables, with the following slight modi- 
fication to suit the four districts into which the Corallian Rocks have 
been divided, and which are indicated thus : 
1 . The eastern part of the Tabular range, from Scarborough to Brompton 
2. The western part of the Tabular range, from Pickering to Helmslev 
3. The Hambleton Hills. 
5. The Howardian Hills. 
'pass up," "pass down." 
Zone of Am. plicatilis. 
Abbreviations used in the columns marked 
P. Portlandian Beds. 
K. Kimeridge Clay. 
U.C.G. Upper Calcareous Grit or Cement-stone. 
C.R. Coral Rag. 
C.O. Coralline Oolite (Middle Calc. Grit and \ 
Upper Limestone). J 
C.G. Lower Calcareous Grit and Lower Lime- 1 ~ 
stone, r jone of Am. perarmatus. 
O.C. Oxford Clay. 
Kel. Kellaways Rock. 
Cb. Cornbrash. 
G.L. Grey Limestone. 
M. Millepore Bed. 
El. Eller Beck Bed. 
D. Dogger. 
Bl. Blea Wyke Beds. 
U.L. Upper Lias. 
M.L. Middle Lias. 
L.L. Lower Lias. 
Ju. Jurensis Beds. 
C rw , TWia \ Tnese are separated on account of their forming 
U: Capricornus Beds. ) a ti(m of tfae Middle Liag of ho * 
J. Jamesom Beds. } ^ of the Lower Liag 
Abbreviations used in the several columns of Strata. 
Authors. 
Works referred to in which the 
determinations occur. 
B. 
Be. 
C. 
D. 
H. 
Hi. 
J. F. Blake 
W. Bean 
J. Carter 
T. Davidson 
W. H. Hudleston 
G. J. Hinde 
The Kimeridge Clay of England, Q. J. G. S., vol. 
xxxi., p. 196, 1875. 
Catalogue of Cornbrash Fossils, Mag. N. H., ser. 
2, vol. iii., p. 57, 1839. 
The Decapod Crustaceans of the Oxford Clay. 
Q. J. G. S., vol. xln,, p. 542, and letters to the 
author. 
The Fossil Brachiopoda. Monographs of the 
Palseontographical Society, 1851-55 and 
1874-82. 
The Yorkshire Oolites. Proc. Geol. Assoc:, 
vols. iii., iv., v., 1874-76-78. 
The Gasteropoda of the Yorkshire Oolites. Geol. 
Mag., 1880-85. 
The Corallian Rocks of England, by Blake and 
Hudleston. Q. J. G. S., vol. xxxiii., 1877. 
The Jurassic Gasteropoda, 1888-90. Mon. of 
the Pal. Soc. 
Q. J. G. S., vol. xlvi., p. 54 ; and letters to the 
author. 
A 2 
