741 



POTER. 



Poteriocrinus corycia, Scaphiocrinus corycia^ 17th An. 



5 Kt. N. Y., 1864, p. 57, Crinoids Wav 

 ^ * sand., Ohio, 1863.) Pal. Ohio, Vol. 2* 

 1875. page 173, plate 12, fig. 9, natural 

 Prd.Ohin. "WJL'YH size^ original specimen, showing calyx 

 and part of arms ; surface somewhat strongly granulose ; gen- 

 eral aspect of P, cauliculug of the Burlington limestone^ but 

 with diflferent arms. Wa^oerly shales^ at Richfield, Summit Co. 

 O. — Pocono formation^ X, 



Poteriocrinus crineus, Hall, Grin. Waverly sandstone 



Ohio, 1863.— 



Pal. Ohio, 



Vol. 2, page 



172, plate 12, 



^y fig. 6, view of 



"" the body and 



arms (to the second forking) ; 7, opposite side, showing anal 



plates; surface smooth or finely granulose, without distinct 



markings. Waverly shales, at Richfield, O. — X, 



X. 



Poteriocrinus pleias, Hall. Grin. Wav. Sand. Ohio, 1863. 



—Pal. Ohio, Vol. 2, 



Pal OhioSlL.xi'- 



,....^X .. ), ^ ^g^^^ ^^^^ ^^^^ ^^^^^ 



12, fig. 8, enlarged 

 twice ^^Yio^ing anal 

 side and arms of 

 rear-side rays; 

 column subpentago 



nal, composed of alternate thick and thin joints ; resembles P. 

 crineus^ but more slender, and arin joints larger. Waverly^ 

 Richfield, 0.— X. 



Poteriocrinus rhombiferus. 



Z,ar 



2.b 



l^f&' 



Owen. Geol. of Wise. 

 Iowa and Minn. 

 1852, plate 5B, fig. 2 

 a, h^ G^ {h shows the 

 t wo access ory 

 plates.) fro m the 

 Subcarhoniferous 



limestone at Burlington quarries, Iowa. — XL 



