POTER. 



740 



FclL Ohio. X, llff 



plates of the smaller somewhat deranged by pressure. The 

 little pieces between the rays give it somewhat the appearances 

 of a Glyptocrinus. Generally like D, acutidactylus and gre- 

 garius^ Bill. Found at Cincinnati 100 feet below the hill tops. 

 — Hudson river formation^ III h, 



Poteriocrinites (Dendrocrinus) polydactylus ; Homo- 

 P erinus polydactylus^ Shumard. 



''J^' -^<J' Trans. St. Louis Acad. Sci., 1857, 



Cincinnati group,) — Pal. Ohio, 

 Vol. 1, 1873, page 22, plate 3 Msy 

 rig. 9, rear view. Related to Den- 

 drocrinus jewettii^ Billings, more 

 nearly than to any other. Cin- 

 cinnati {Hud, river) beds at 

 Richmond, Ind. — /// J. 



PaLOh/o,T. f//S/s. 



:FaJ, dhl^? 



Poteriocrinites (Dendrocrinus) {posticus, Hall. Pamph. 

 lil i'^.^Tf'^f^^'J'^-^ ^J^^^^^' .^c-:^^k^' 1866, Cincin, 



group, — Pal. 

 Ohio, Vol. 1^ 

 1873, page 22, 



plate 3 hiss fig. 4(^, rear view, showing part of the ventral pro- 

 longation ; 45, rear of another, showing more of the arms ; 4<3, 

 front view of last. Column unknown ; surface nearly smooth, 

 or finely granular ; species related to P. polydactylus; but more 

 nearly to P, gracilis^ Hall (not McCoy.) — Illh. 



Poteriocrinus ? calyx, Hall, Trans. Alb. Inst. X, 1879 ; 



^b 





14 





also in Collett's Indiana Report of 1881, page 

 266, plate 15, page 14 ; a specimen imperfect, but 

 with characteristic unusually long subradial 

 plates. Niagara, Vh. 



