566 



NEW YORK STATE MUSEUM 



Tarphyceras seelyi W hitfield (sp.) 



Page 465 



See pi. 20, fig. 5; pi. 21; pi. 24, fig. 3 



1 Transverse section of a specimen, obtained by fracturing and 



showing the septa and siphonal perforations. ■ A lateral view 

 of this specimen is shown on plate 24, figure 3. 



2 Lateral view of a living chamber. The posterior part is partly 



crushed 



The originals are from the Fort Cassin beds (A 3 ) of Valcour N. Y., 

 and now in the New York State Museum. 



Tarphyceras multicameratUm sp. nov. 



Page 472 

 See pi. 23, fig. 2 



3 The early volutions of the type specimen, the other side of which 



is shown on plate 23, figure 2 

 The original is from the dove-colored Chazy limestone of Isle La 

 Motte and now in the museum of Burlington University. 



