iiixd : carboxifekous rocks of the pexxixe system. 453 
Paleontology. 
The important eYidence furnished by a study of the paleon- 
tology of the Carboniferous rocks for the correlation of the series 
in different districts has been very largely neglected. The extensive 
memoirs on the fauna and flora of different districts published by 
the Geological Surveys of other countries only bring home to us 
more forcibly the utter dearth of any such information in this country. 
What is wanted now is a paleontological survey, and this could 
be largely carried out by local geological societies. The accurate 
identification of fossils is also an important desideratum. Many 
species published in lists have been erroneously identified, from 
various causes, hence the necessity for local sub-committees to super- 
intend the correct identification of specimens. 
A study of the tables of fossils published in the appendices A and 
B to our paper (Q. J. Geol. Soc, Vol. LVII.) shows at once that the 
fauna of the Carboniferous Limestone is identical with that of the 
Great Scar Limestone plus the Yoredale Series, and further details 
have been published since in my report of the Committee on Life 
Zones in British Carboniferous Rocks (Brit. Ass. Rep., 1901). 
In the same two papers it is noted that there does exist in 
a certain definite area, on the top of the Massif of Limestone, a 
series of black limestones, shales, and quartzose sandstones (the Pendle- 
side Series), which contain a fauna peculiar and distinct from that 
found in the Carboniferous Limestone of the Yoredale Series, It 
is hinted (pp. 379-401) that the fauna of the Pendleside Series bears 
a very striking similarity to that of the Culm Beds of Devonshire 
and Europe ; a view which I am persuaded will grow clearer as fresh 
paleontological evidence turns up. 
The percentage of fossils common to the Yoredale and the 
Pendleside Series is low and practically the same as that common 
to the Carboniferous Limestone and the Pendleside Series. 
By far the greater number of the Brachiopoda of the Y^oredales 
and the Limestone are absent in the Pendleside rocks, only some 
12 species remaining. 
The Actinozoa are only represented by a single species. 
