224 



* 0. 



* 0. 



* 0. 

 0. 



* 0. 



* 0. 



* 0. 



* 0. 



* 0. 



* 0. 



* 0. 



* 0. 



* 0. 



* 0. 



* 0. 



* b. 



* 0. 



* 0. 



* 0. 



* 0. 



* 0. 



* 0. 



* 0. 

 *0. 



* 0. 



PALEONTOLOGY OF NEW YORK. 



Macleodi, Whitfield Calciferous. 



subEequata, Conrad Chazy — Trenton. 



Minneapolis, N. H. Winchell Trenton. 



gibbosa, Billings... Trenton. 



perveta, Conead Trenton. 



Stonensis, Safford Trenton. 



testudinaria, Dalman Trenton — Hudson River. 



bellula, Meek Hudson River. 



crispata, Emmons Hudson River. 



emacerata, Hall Hudson River. 



Meeki, Miller Hudson River. 



multisecta, Meek Hudson River. 



'^^^^"ffll. FoERSTE Clinton. 



elegantula, Dalman- Niagara. 



arcuaria, sp. nov Niagara. 



concinna, Hall Lower Helderberg. 



perelegans, Hall Lower Helderberg. 



planoconvexa, Hall Lower Helderberg. 



quadrans, Hall Lower Helderberg. 



subcarinata, Hall Lower Helderberg. 



lenticularis,! Vanuxem, non Waulenberg, Upper Helderberg. 



lepida, Hall Hamilton. 



infera, Calvin Chemung. 



Leonensis, Hall Chemung. 



superstes, sp. nov Chemung. 



RHIPIDOMELL A, (Ehlert. 1890. 

 XL Group of Orthis Michelini, Leveille. 



* 0. circulus, Hall Clinton. 



* 0. uberis, Billings Anticosti. 



* 0. hybrida, Sowerby Niagara. 



* 0. assimilis, Hall Lower Helderberg. 



t The specific name lenticularis having already been used for a species of Okthis, the name should be 

 changed to Orthis lentiformis. Hall. See Repoit of the Fourth Geological District of New York, p>age 175. 



