86 Cincinnati Society of Natural History. 
irregularly bedded limestone. The following fossils occur in 
addition to those listed on pages 75 and 76. The fauna is 
mainly bryozoan. ‘These beds have not received much at- 
tention at the hands of collectors, which may explain the 
brevity of the following list: 
BRYOZOA, 
Amplexopora sp. (c) Dicranopora emacerata (Nichol- 
Arthropora shafferi (Meek). son). 
Atactoporella sp. Eridotrypa sp. 
Berenicea sp. Heterotrypa sp. 
Bythopora gracilis (Nicholson). Homotrypasp. (c). 
(c) Peronopora compressa (Ulrich). 
Callopora sp. ~ decipiens (Rominger). 
Cerainoporella whitei (James). Petigopora petechialis (Romin- 
Cceloclema oweni (James). (c) ger). 
Crepipora simulans Ulrich. Proboscina frondosa (Nicholson). 
Dekayia sp. Stomatopora inflata Hall. 
BRACHIOPODA. 
Platystrophia lynx (Eichwald). (c) 
Warren or Homotrypa bassleri Beds. 
The Mt. Auburn beds pass with little distinction into the 
next series of beds. For these the name Warren beds is pro- 
posed, because they are exposed in a number of streams in 
the vicinity of Lebanon, Oregonia, and other places in War- 
ren County. The most characteristic bryozoan is perhaps 
the Homotrypa bassleri.* These strata were included by Orton 
in the Lebanon beds, but their fauna shows them to be much 
more nearly related to the Lorraine beds beneath than to the 
Richmond above. ‘Toward the top of this division the layers, 
both limestone and shale, especially the latter, become rough 
and nodular, indicating a marked change in the sedimenta- 
tion. For this reason these layers are considered to mark 
the close of the Lorraine. Immediately after them come the 
even-bedded limestones and marly shales of the lower Rich- 
mond. Limestone is not very abundant in the beds under 
consideration, whose thickness is about eighty feet. The 
intercalated shales are of a dark bluish color, rather marly. 
* For description of this species see this journal, Vol. XX., Article IV. 
38 
