499 



Ophil. 



Ophileta compacta, Salter. Can. Org. Rem. Decade 1, 



L i\ ci-:^^m^^^ ^^^>5vW IS^^i Calciferous- 



fig. 9 a, under? or flat 

 side ; 5, cast of upper 

 or concave side. Pots- 

 dam sandstone^ I, — 

 ^^ ^^^ . Page 115, fig. 23 a, flat 



^^^' underside; 5, concave 



Caloiferous sandstone^ II a. Note. — Whitfield 

 makes this a syn. of 0, complanata ; which see below. 



Ophileta complanata, Vanuxem. Geol. N. Y. 1842, p. 36, 

 fig. 2, 2,— Emmons, Geol. N. Y. 1842, p. 179, fig. 

 53, 2.— Rogers, Geol. Pa. 1858, p. 817 — Whit- 

 field, Bull. Am. Mus. Nat. Hist. N. Y. No. 2, 

 1889, p. 48, pi. 7, figs. 18, 19, 20, lower and upper 

 surfaces of a specimen of medium size, and an 

 ideal section of the same ; 21, lower surlace of 



upper side. 



ji.ri.i 



