SIO PALAEONTOLOGY OF NEW-TORK. 



Euoiiiplialus (lisjuiictus ( n. s.)- 



Plate LXV. Fia. 8 ; and Plate LXVIL Fig. 4 a, b. 



Shell discoic^ : volutions about one and a half, fl.at or depressed-convex 

 on the lower side, with a wide umbilicus ; upper side of volutions 

 rounded : aperture suboval, the lower side being a little flattened. 

 Surface unknown. 



This species is readily distinguished by the paucity of its volutions, which are 

 not contiguous. 



PLATE LXV. 

 Fig. 8. The lower side of a weathered specimen. 



PLATE LXVIL 

 Fig. 4 a. The lower side of a cast of this species. 

 Fig. 4 b. Profile view of the same. 



Geological position and locality. In the upper pentamerus limestone : Cai-lisle and 

 Schoharie, Schoharie coxmty. 



£uouiplialus sinuatus ( n. s.). 



Plate LXIX. Fio. 1 a, b. 



Shell discoid, with about three volutions. Spire slightly elevated above 

 the outer volution : volutions contiguous, rounded, a little more convex 

 above than below : aperture oval ; peristome sinuate on the lower side. 



Surface marked by numerous fine transverse strisE, which pass over the 

 upper side of the volution in nearly a direct line, bending backwards 

 on the periphery, and continuing in that direction to the middle of the 

 lower side of the volution, where they again bend forward, leaving a 

 sinuosity, which, in one specimen, is distinctly marked upon the surface 

 for half a volution. 



This species is readily distinguished from the preceding by its more numerous 

 ABd contiguous volutions, which are less flattened on the lower side. 



