222 



PALEONTOLOGY OF NEW YORK. 



DINORTHIS 



(Horn, propos). 



III. Group of Orthis pectinella, Emmons. 



* 0. pectinella, Emmons Trenton. 



^•P^±^llL., Hal. Trenton. 



* 0. Svveeneyi, N. H, Winchell Trenton. 



0. Iphigenia, 



* 0. porcata, 

 0. retrorsa, 



* 0. subquadrata 



* 0. detlecta, 



* 0. recta, 



* 0. loricula. 



PL^SIOMYS 



(nom. propos). 



IV. Group of Orthis subquadrata. Hall. 



Billings Trenton. 



McCoy Trenton and Hudson River. 



Salter Trenton and Hudson River. 



Hall Trenton and Hudson River. 



Conrad Trenton. 



Conrad Trenton. 



sp. nov Trenton. 



0. Battis, 

 0. imperator, 



* 0. bellarugosa, 



* 0. borealis, 

 0. Lonensis, 



* 0. insculpta, 



* 0. occidentalis, 



* 0. sinuata, 

 0. Scovillii, 



* 0. Maria, 



* 0. Daytonensis, 



* 0. fausta, 



HEBERTELLA 



(nom. propos). 



V. Group of Orthis sinuata, Hall. 



Billings . Quebec. 



Billings Cliazy. 



Conrad Trenton. 



Billings Trenton. 



Walcott Trenton. 



Hall Hudson River. 



Hall Hudson River. 



Hall Hudson River. 



Miller Hudson River. 



Billings Anticosti. 



Foerste Clinton. 



FoERSTE Clinton. 



