Contributions to Invertebrate Palseonlology . 543 



IsoMEMA M. and "W. 



/. bellatula B.Si\\= Callonema bellatula Hall. ' 



I. depressum M. and W. 



/. humile Meek. 

 Xenophora Fischer. 



X. antiqua Meek. 

 Xaticopsis McCoy.- 



N. cequistriata Meek. 



N. cretaeea H. and W, 



N. levis Meek. 

 LoxoNEMA Phillips. 



L. Leda Hall. 



L. Hamiltonise Hall, 



L. parvulum Whitf. 



L. pexatuvi Hall. 

 Orthonema M. and W. 



0. Neviberryi Meek. 

 Macrocheilus Phillips. 



M. prisons Whitf. 

 Pleijrotomaria DeFrauce. 



F. adjutor Hall. 



P. Doris Hall= Cyclonema Doris Hall. 



P. Hebe Hall. 



P. Lucina Hall. 

 MuRCHisoNiA DeYerneuil. 



M. desiderata Hall. 



M. Maia Hall. 



M. obsoleta Meek. 

 Dextalium Linnajus, 



D. Martini Whitf. 

 Bellerophon Montfovt. 



B. Neioberryi Meek. 



B. Pelops Hall. 



B. propinquus Meek. 

 PTEROPODA. 



Conularia Miller, 



C. elegantula Meek. 

 Tentaculites Schloth. 



T. scalariformis Hall. 



