222 



PALAEONTOLOGY OF NEW YORK. 



DINORTHIS 



(nom. propos). 



III. Group of Orthis pectinella, Emmons. 



* 0. pectinella, Emmons Trenton. 



0. pectinella, yy m . 



^ ™-, semiovaiis, Hall Trcnton. 



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



0. Iphigenia, 



* 0. porcata, 

 0. retrorsa, 



* 0. subquaclrata 



* 0. deflecta, 



* 0. recta, 



* 0. loricula, 



PL^SIOMYS 



(nom. propos). 



IV. Group of Orthis subquadrata. Hall. 



BiLLfNGS Trenton. 



McCoy Trenton and Hudson Eiver. 



Salter Trenton and Hudson Ptiver. 



Hall Trenton and Hudson River. 



CoNRAU 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 Chazy. 



Conrad Trenton. 



Billings Trenton. 



Walcott Trenton. 



Hall Hudson River. 



Hall Hudson River. 



Hall Hudson River. 



Miller Hudson River. 



Billings Anticosti. 



Foerste Clinton. 



Foerste Clinton. 



