613 



Fecop. 



Pecopteris 



? A beautiful fruiting fern of this genus 



crowds Oook (Falton) roof shales of Ocean mine tunnel, 

 Broad Top, Huntingdon Co. T3, dld,—XIIL 



Pecten aviculatus. See Entolium aviculatum. XIIL 



Pecten Iroadheadi. See Aviculopecten carboniferus. 



Pecten carloniferus. See Avteulopecten carboniferus. 



Pecten hawni. See Aviculopecten carboniferus. XIIL 



Pecten islandicus, Muller. Geology of Canada, 1863, page 



963, fig. 476 ; one of 

 the Arctic shells left 

 in the Post glacial 

 ( Champlain) clay^ 

 in the valley of the 

 St. Lawrence ; but 

 ^^^1 not as yet found in 



the Delaware and 

 Susquehanna river 

 clays of the same 

 age. — Quarternary^ 

 {Post Glacial,) PP. 



Pecten providencensis. See Aviculopecten prov. XIII. 

 Pelion lyelli, [Ranices lyelli, Wy man, Amer. Jour. Sci. 



Pcd.Qtl 



