GEOLOGY OF LICKING COUNTY. PART IV. 
By C. L. Herrick. 
List of Waverly Fossils, Continued. 
In this number a considerable number of additional species are 
described and additional information collected concerning many notic- 
ed in the last number. Especial pains has been taken to figure char- 
acteristic specimens of the new species and it is hoped that several de- 
ficiencies in the last paper are now met. The Bryozoa constitute the 
basis for a separate paper by Mr. Ulrich to whose generosity we are 
greatly indebted. It is frankly admitted that a great deal remains to 
be done, nevertheless this paper is based upon much larger collections 
of Ohio Waverly fossils than ever before accumulated and one derived 
from nearly all parts of the state. 
If circumstances had permitted, it was intended to prepare an arti- 
ficial key to genera and species of the Waverly group. This we can 
not at present do, for to make it of real value it should include the 
species of Michigan, Iowa, Tennessee and Pennsylvania. In a few 
cases a key has been prepared for brachiopods. The genera of Lam- 
ellibranchs can be collated by reference to Vol. V. of Palaeontology of 
New York and the number of species here reviewed is too small to 
require special keys. In bringing this list to a close the leniency of 
students is relied upon in view of the extreme difficulty of the under- 
taking and the nature of the material. In the object set prominently 
before the mind, the reference of species to their exact horizon, we hope 
to have measurably succeeded. 
KEY TO THE BRACHIOPODA OF THIS LIST. 
A. BRACHIOPODA. 
a'. Lyoeomata. 
Valves of the delicate shell not articulated by teeth, form sub-dis- 
coid or linguloid, texture more or less horny. 
