68 



Pleurocystites elegans, Billings. 

 " filitexius, Billings. 



•' vobustus, Billings. 



" sqiiamosus, Billings. 



ASTEROID-E. 



Agelacrinites Billingsi, Chapman. 

 " Dicksoni, Billings. 



Cyclocystoides Halli, Billings. 

 Edrioaster Bigsbyi, Billings. 

 Palasterina stellata, Billings. 

 Petrasfcer rigidus, Billings. 

 Stenaster pulcliellus, Billings. 



" Salteri, Billings. 



Tfeniaster cylindricus, Billings. 



POLYZOA. 



Amplexopora discoidea, James sp. 

 Arthrocleraa piilcliellum, Billings. 

 Batostoma Ottawaense, Foord. 

 Constellaria antheloidea, Hall. 



'• florid a vai". plana, TJlrich. 



Diplotrypa regularis, Foord. 



" Wliiieavesii, Nicholson. 



Heterotrypa solitaria, Ulrich. 

 Homotrypa similis, Foord. 

 Monotrypella Trentonensis, Nicholson. 

 Monticulipora Billingsi, Foord. 

 " parasitica, Ulrich. 



" Westoni, Foord. 



Prasojiora affinis, Fcord. 



" oculata, Foord. 



" Selwyni, Nicholson. 



Ptilodictya talciformis, Nicholson. 



" maculata, Ulrich. 



" pavonia, d'Orbigny. 



Eetepora Trentonensis, Hall. 

 Spatiopora areolata, Foord. 

 Stictopora acuta, Hall. 



" paiipera, Ulrich. 



Tetradium'? Peachii, var. Canadense, Foord. 



Seachiopoda. 



Camerella hemiplicata. Hall. 



" bisulcata, Emmons. 

 Discina Circe, Billings. 

 Lepta^na sericea, Sowerby. 

 Lingula Philomela, Billings. 



