FOSSILS OF THE CINCINNATI GROUP. 23 



Modiolopsis faba, Conrad. 



Modiolopsis modioliformis, Meek & Worthen. 

 ^ *Modiolopsis modiolaris, Conrad. 



Modiolopsis nasuta, Conrad. 

 *Modiolopsis pholadiformis, Foster & Whitney. 



Modiolopsis spatulata, James. 



Modiolopsis terminalis, Hall. 

 »*^*Modiolopsis truncata. Hall. 



Modiolopsis versaillesensis, S. A. Miller. 



Xuculites yoldiaformis, Ulrich. 



Orthodesma byrnesi, S. A. Miller. 



Orthodesma cancellatum, Ulrich. § 

 *Orthodesma (Orthonota) contractura, Hall. 



Orthodesma euneiforme, S. A. Miller. 

 ^-^ Orthodesma curvatum, Hall & Whitfield. 



Orthodesma intermedium, Ulrich. § 



Orthodesma mickleboroughi, Whitfield. 

 ^Orthodesma (Orthonata) parallelum, Hall. 



Orthodesma occidentale, S. A. Miller. 



Orthodesma rectum, Hall & Whitfield. 



Orthodesma subovale, Ulrich. 



Orthonota pholadis, Conrad. 



Pterinea bellilineata, Billings. 

 *Pterinea (Avicula) corrugata, James. 

 '^ *Pterinea (Avicula) demissa, Conrad. 

 'J'^^Pterinea (Avicula) insueta, Conrad. 



Pterinea (Avicula) mucronata, Ulrich. 



Pterinea subquadrata, James. 



Pterinea (Avicula) welchi, James. 



Sedgwickia compressa, Meek. 



Sedgwickia divaricata, Hall and Whitfield. 



Sedgwickia fragilis, Meek. 



Sedgwickia lunulata, Whitfield. 



Sedgwickia (?) neglecta, Meek. 



Tellinomya cincinnatiensis, Hall. 



Tellinomya cingulata, Ulrick. 



Tellinomya gibbosa, Hall. 



