The Geology of Cincinnati. 93 
GASTROPODA. 
Archinacella rugatina Ulrich. Plethospira striata Ulrich. 
Conradella dyeri (Hall), Protowarthia morrowensis ( Miller 
Cyclonema bilix-conicum Miller. and Dyer). 
Cyrtolites ornatus Conrad. Protowarthia subcompressa Ulrich. 
Helcionopsis striata Ulrich. Trochonema madisonense Ulrich. 
Lophospira perlamellosa Ulrich. 
CEPHALOPODA. 
Cyrtoceras faberi James. Orthoceras fosteri Miller. 
ss irregulare Wetherby. ee hallanum Miller. 
Gomphoceras indianense Miller Trocholites circularis Miller and 
and Faber. Dyer. 
Orthoceras carleyi Hall and Whit- 
field. 
VERMES. 
Spirorbis cincinnatiensis Miller and Dyer. 
CRUSTACEA. 
Acidaspis onealli Miller. Lichas harrisi Miller. 
Beyrichia parallela Ulrich. Primitia glabra Ulrich. 
Bollia pumila Ulrich. cP milleri Ulrich. 
“regularis (Emmons). Tetradella lunatifera Ulrich. - 
Ceratopsis chambersi - robusta : quadrilirata Hall and 
Ulrich. Whitfield. 
Ceraurus meekanus Miller. Tetradella quadrilirata - simplex 
Dalmanites breviceps Hall. Ulrich. 
Drepanella richardsoni (Miller). ° 
POSITION UNCERTAIN. 
Faberia anomala Miller. 
Trichophycus lanosum Miller and Dyer. 
Middle Richmond Fauna. 
In addition to the species previously given as ranging 
through the Richmond, the following occur in these beds: 
SPONGIA. 
Streptospongia labyrinthica Ulrich. 
CQ@LENTERATA. 
Streptelasma divaricans (Nicholson). 
Tetradium minus Safford, variety. 
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