150 



NEW YORK STATE MUSEUM 



ChV Uncinulus mutabilis Hall 



Ch U. abruptus Hall 



SW Stenocisma formosum Conrad 



CV Eatonia medialis I Vanuxem) 



HCVW E. peculiaris (Conrad) 



V E. singularis ( Vanuxem) 



HV E. whitfieldi Hall 



H E. sinuata Hall 



( V Anastrophia verneuili Hall? 



CV Coelospira concava Hall 



CSVW C. dichotoma Hall 



V C. acutiplicata Hall 



HCVSW Leptocoelia flabellites (Conrad) 



V . Trematospira costata Hall 



( V T. multistriata Hall 



Ch T. perforata Hall 



V T.sp.n. 



V Rhynchospira formosa Hall 



V Parazyga deweyi Hall 



HCSV Meristella lata Hall 



CV M. vascularia Clarke 



Ch M. princeps Hall 



t 1" M. lentiformis Clarke 



Ch M. laevis Hall 



W M. princeps Hall 



Ch M. bella Hall 



SV Nucleospira elegans Hall 



V N. ventricosa Hall 



Ch Atrypa reticularis Linne 



HCSVW. . . . Spirifer arenosus {Conrad) 



SV S. cyclopterus //./// 



CSVW S. murchisoni Caslclnau 



W .S. plicatus (Weller) 



V S. tribulis Hall 



\Y S. nearpassi Weller 



CV S. saffordi Hall 



S S. modestus Hall 



