Ophil. 



500 



a specimen retaining the shell ; 22, upper side of a small indi- 

 vidual showing the depressed spire, 0, Icevata, Vanux. ; 23, 

 lower side of a smaller shell retaining the surface ; 24. enlarged 

 view of the back of specimen fig. 23; 25, surface of a slab 

 showing the specimens as they occur on the rock for many 

 square feet togther. — Calciferous sandstone^ II a^ 



Ophileta levata. Vanuxem, Geol. 3d Di«t. N. Y. 1842, p. 



j£^ 36, fig. 2, 1. Emmons, Geol. 2d Dist. 1842, p. 179, fig. 



i 53, 1. Calciferous sandstone^ II a. C. E. Hall, Pioc. 



Am. Phil. Soc. Phila., Jan. 5, 1876, Blach river 



division of the Trenton group^ II c^ Note. Whitfield 



makes this a synonym of 0. complanata ; which see 



M CXi.£^ above. He also makes 0, nerine^ Bill. (Pal. Foss. I, 



245, f. 232) the same; and also O. compacta,, Salter (Can. Org. 



Kem. Dec. 1, p. 16, pi. 3). 



Ophileta ottawaensis, Billings. Can. Nat. and Geol. Vol. 



5, 1860. Trenton. Geol. Can. 

 1863, p. 180, figs. 173 a, side 

 view ; J, view of umbilicus. 

 Trenton limestone^ II c. 



Ophileta sordida. (Maclurea sordida^ Hall, Pal. N. Y. 



Vol. 1, 1847, 

 Calcif. SS. pi. 

 2, figs. 2, 2 a.) 

 — Straparol- 

 lus sordidus^ 

 Emmon s, 

 Amer. Geol. 

 I, ii, 1855, p. 

 156, pi. 3, fig. 



/f. Pai,N.Y. yo),L PLZ', 6. Spire 



scarcely raised ; about three whorls; smooth surface ; usually 

 an inch across; projecting from surfaces of Calciferous sand- 

 stone formation, at Chazy, N. Y. ; at Bald Mtn. ; Hoosic FallsJ; 

 and in Wythe county, Va. Emmons. II c. 



