680 NEW YORK STATE MUSEUM 



PLATE 6 



Eunoa accola Clarke 



p. 607 



(See pi. 5) 

 no. 



1 Two valves overlapping and exposing the pedicle notch with 



clearly defined margins. The posterior margin of the 

 brachial valve is here again not clearly defined. 



2 A pedicle valve with the margins of the pedicle slit approxi- 



mately entire for most of their extent, though pressed 



apart. 



Beekmantown graptolite shales. Deep kill, Rensselaer, 



co. N. Y. 



