FOSSILS FROM THE COAL MEASURES. 289 



Chonetes mesoloba, Norwood and Pratten. 



" flemingi, Norwood and Pratteu. 



" Icdvis, Keyes. 

 Athyris suhtilita, Hall. 

 Lingula umbonata, Cox. 

 Streptorhynchus crenistriatum, Phillips. 

 Spirifera camerata, Morton. 



" lineata, Martin. 



" rockymontana, Marcou. 

 Retzia mormoni, Marcou. 

 Spi7'iferina kentuckensis, Shumard. 

 Rhynchonella ida, Marcou. 



MOLLVSCA. 

 LAMELLIBRANCHIATA. 



Myalina swallovl, McChesuey. 

 Avicida longa, Geinitz. 

 Lima retifera, Shumard. 

 Avieulopeeten coxanus, Meek and Wortheu. 

 " negledus, Geinitz. 



" whitei, Meek. 



Clinopistha radiata, Hall. 

 Solenomya soleniformis, Cox. 

 Astartella vera, Hall. 

 Nucula jmrva, McChesney. 



" ventriicosa, Hall. 



" beyrichi, Schlotheiin. 

 Nuculana bellisiriala, Stevens. 

 Schizodus alpina, Hall. 

 Macrodon obsoletus, Meek. 

 Pleurophorus permianus, Swallow. 



" subcuneatus, Meek and Hayden. 



GASTEROPODA. 



Dentalium meehianum, Geinitz. 



" annulostriatum, Meek and Worthen. 



" subkeve, Hall. 



Pleurotomaria brazoensis, Shumard. 

 " modesta, Keyes. 



" grayvillensis, Norw^ood and Pratten. 



" carbonaria, Norwood and Pratten. 



" valvatiformis, Meek and Worthen. 



" sphcerulata, Conrad. 



