Pejssta. 



618 



Geo/, 



Canada ^^^^^^^^^ /563, 



Pentamerus occidentalis, Hall. Geol. Canada, 1863, page 



Locjan^ GcoL CanacLci . 



341J 



337, fig. 341 ^, ventral valve; 5, impression of beak of ventral 

 valve; c, side view. Guelph formation (between Clinton and 

 Niagara)^ Va'^ 



Pentamerus pergibbosus, H. & Whitf. Pal. Ohio, Vol. 2, 



Sfh " ' // .^nm^^.... fjo 1S75, page 139, plate 



7, fig. 10, back of in- 

 ternal cast, from 

 Niagara limestone^ 

 Greenville, Ohio, 

 ^ mmwr— , , showing the un 



shell ; 11, profile of another, showing depth of valves. — Vh. 



Pentamerus pseudogaleatus, Hall, Pal. N. Y. vol. 3, 1859. 

 Low. Held, is perhaps represented by four very poor specimens, 

 601-11, in the Orbisonia collections, 1| miles south of Rock 

 Hill furnace. Low. Held.^ VI. — Abundant in Stormville con- 

 glomerate limestone beds at Stormville, Monroe Co., Pa., G6, 



