WHITEAVE8.] FOSSILS OF HAMILTON FORMATION OF ONTARIO. 123 



Polypora tuborculata, Nicholson. 



Phyllopora prisca. (=Retepora prisoa, Goldfuss, teste Nicholson.) 



Ptilodictya cosciniformis, Nicholson. 



" Moeki, Nicholson. 



Tteniopora exigua, Nicholson. 



" penniformis, Nicholson. 

 Cei'iopora Hamiltonensis, Nicholson. 



" Huronensis, Nicholson. 

 Fistulipora incrassata, Nicholson. 



'' minutissima. (=Callopora minutissima, Nicholson.) 



" utiiculus, Eominger " Widder, C. W," Rominger. 



Monotrypa quadrangularis, Nicholson. 

 Amplexopora Bari'andei, Nicholson. 



" moniliformis, Nicholson. 



Ascodictyon fusiforme, Nioh. and Bth., jun. . . " Widder," Nicholson . 

 stellatum, Nich. and Bth., jun. ... " " 



BEACHIOPODA. 



Lingula ligea, Hall. 



" Thedfordensis, Whiteaves. 



Discina Doria, Hall. 

 Crania crenistriata, Hall. 

 " HamiltoniiB, Hall. 

 Productella (Strophalosia ?) truncata, Hall. 

 Chonetes carinata (or coronata) Conrad. 

 " lepida, Hall. 

 " scitula, Hall. 

 Orthis Vanuxemi, Hall. 

 Streptorhynchus perversum, Hall. 

 Strophodonta ampla, Hall. 

 '' concava, Hali. 



" demissa, Conrad. 



inffiquistriata, Conrad. 

 " nacrea, Hall. (=S. lepida, Hall.) 



" perplana, Conrad. 



" plioata, Hall. 



Strophomena (Leptagonia) rhomboidalis, Wilokins. 

 Spirifera granulifera, Hall. 

 " mucronata, Conrad. 

 " Parryana, Hall. 

 « sculptilis, Hall. 

 " subdecussata, Whiteaves. 



December, 1888. W 



