II 



568 NEW YORK STATE MUSEUM 



Schroederoceras cassinense Whitfield (sp.) 



Page 476 



I, 2 Ventral view, showing the strong development of the ventral 

 and lateral faces and section of the same specimen 



Schroederoceras eatoni Whitfield (sp.) 



Page 476 

 See pi. 23, fig. 1 



3 Longitudinal section of a specimen 



4 Transverse section of a fragment 



Tarphyceras seelyi Whitfield (sp.) 



Page 465 

 See pi. 19, fig. I, 2; pi. 21, fig. i; pi. 24, fig. 3 



5 Lateral view of a well preserved specimen showing the earlier 



volutions 

 All originals of this plate are from the Fort Cassin beds (Ag) of 

 Valcour N. Y, and now in the New York State Museum. 



